Nokia Customer Care RH-19/RH-50 Series Cellular Phones 7 - RF Description and Troubleshooting Issue 3 05/2004 2004 Nokia Corporation.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care This page has been intentionally left blank Page 2 2004 Nokia Corporation.
Nokia Customer Care Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Table of Contents Page No RF Description and Troubleshooting ................................................................................................... 5 Introduction ........................................................................................................................................... 5 RF key component placement ........................................................................
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care RF tuning after repairs ......................................................................................................................46 RX calibration ......................................................................................................................................46 RX calibration GSM850/900................................................................................................
Nokia Customer Care Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting RF Description and Troubleshooting Introduction The sections below provide instructions how to check, repair and calibrate the RF section of RH-19/RH-50 phones. It is assumed that for tuning and repair the phones are disassembled and tested within a repair jig MJS-52.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Note: There are different kinds of PAs applicable (Agilent and Renesas (RH-19) and Renesas (RH-50)). Below the following abbreviations can be used interchangeably: GSM850 and (E)GSM900 to refer to GSM low band. DCS or PCN or GSM1800 GSM medium band. PCS and GSM1900 GSM high band. Page 6 2004 Nokia Corporation.
Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Nokia Customer Care RF key component placement Figure 1: RF key component placement Position Component Name Supplier and Description Code N801 TX-PA Agilent, QCPM8893 (RH-19) Renesas, PF08125B-03 (RH-19) Renesas, PF08132B7 (RH-50) 4350369 4350409 4359007 L801 Directional Coupler Murata, LDC15D190A0010A (RH-19) Murata, LDC21836M19D-185 (RH-50) 4551015 4550197 Z601 Antenna Switch Module Hitachi Metals, SHS-L090 (RH-19) SH
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care RF test points The RF power supplies are generated in the UEM and can be measured either in the Mjoelner chamber or in the base band chamber. On the following illustration small circles show the locations of the test points.
Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Nokia Customer Care Transmitter Figure 3: Test points of the transmitter CONT1 Antenna Feed (VANTM) TXIOUTP CONT2 (VANTH) TXIOUTN CONT3 TXQOUTP (VANTL) TXQOUTN DET Pout TXP (J701) EGSM TXC (J702) Pout DCS / PCS TX_850 (RH-50) TX_900 (RH-19) TX_1800 Synthesizer Figure 4: Test points of the synthesizer VR3 VREF1 VIO Utune VCOout VR7 RFCLK_I VR5 VR1A Issue 3 05/2004 2004 Nokia Corporation.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care RF in General The RH-19/RH-50 RF front-end is a triple-band direct conversion transceiver. Using direct conversion, no intermediate frequencies are used for up- or down-conversion. The VCO oscillates on the double respectively quadruplicate frequency of the wanted RX or TX frequency, depending on the band used.
Nokia Customer Care Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting RX850/RX900 Figure 6: RF block diagram Issue 3 05/2004 2004 Nokia Corporation.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care RF power supply configuration All power supplies for the RH-19/RH-50 RF Unit are generated in the UEM IC (D200). All RF supplies can be checked either in Mjoelner or in BB chamber. The power supply configuration used is shown in the block diagram below. Values of voltages are given as nominal outputs of UEM. Currents are typical values. Figure 7: RF power distribution diagram VR1A VR2 4.75 V 3.2 % 0.45 mA 2.
Nokia Customer Care Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting General specifications of transceiver RH-19/RH-50 Parameter Unit Cellular System GSM850, (E)GSM900, GSM1800, GSM1900 RX Frequency Band GSM850: 869 ... 894 MHz (RH-50) EGSM: 925 … 935 MHz (RH-19) GSM900: 935 … 960 MHz (RH-19) GSM1800: 1805 ... 1880 MHz (RH-19/RH-50) GSM1900: 1930 … 1990 MHz (RH-19/RH-50) TX Frequency Band GSM850: 824 ...
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Receiver Description and Troubleshooting General instructions for RX troubleshooting Connect the phone to a PC with dongle and DAU-9T cable (RS232) (or DKU-5 cable (USB)). Follow the instructions below. Connect the phone to a power supply (DC voltage of 3.6V) and a RF signal generator. Measuring RX I/Q signals using RSSI reading Start Phoenix Service Software and open FBUS connection.
Nokia Customer Care Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting The setup should now look like this: Note: This is an example for GSM850 (RH-50), other tunings will show a different figure. Make the following settings on your signal generator: 1. Frequencies: • GSM850: 881.66771 MHz (channel 190 +67710 kHz offset) • GSM900: 942.46771 MHz (channel 37 + 67.710 kHz offset) • GSM1800: 1842.86771 MHz (channel 700 + 67.710 kHz offset) • GSM1900: 1960.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Measuring RX performance using SNR measurement Start Phoenix Service Software and open FBUS connection. Select Scan Product Ctrl-R Wait until phone information is shown in the lower right corner of the screen. Set operating mode to local mode. Select Maintenance Alt-M Testing T RF Controls F Wait until the RF Controls window has popped up.
Nokia Customer Care Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting The setup should now look like this in case of e.g. RH-50 (GSM850): Choose respective band (GSM850 (RH-50), GSM900 (RH-19), GSM1800, GSM1900). Press SNR measurements. Start button window pops up, e.g. for GSM850 band: Issue 3 05/2004 2004 Nokia Corporation.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Set the signal generator as shown in the above window, remembering to compensate for the cable and test jig attenuation losses. Press OK and the window closes. Read the SNR result. The values should be: • RH-50: GSM850 ----> 20dB • RH-19: GSM900 ----> 20dB • RH-19/RH-50: GSM1800 ---> 18dB • RH-19/RH-50: GSM1900 ---> 18dB Page 18 2004 Nokia Corporation.
Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Nokia Customer Care Measuring front-end power levels using spectrum analyzer Spectrum analyzer (SA) level values depend on the probe type and should be validated using a good sample. The levels that are given here are measured using a resistive probe (50Ohm semi-rigid cable). Start Phoenix Service Software and open FBUS connection.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Testing Nokia Customer Care T RF Controls F Wait until the RF Controls window has popped up. Select Band GSM850, GSM 900, GSM1800 or GSM1900 Active unit RX Operation mode continuous RX/TX Channel 190 (GSM850) or 37 (GSM900) or 700 (GSM1800) or 661 (GSM1900) AGC 14 Following picture should be displayed on an oscilloscope’s screen if the GSM receiver is working properly: Page 20 Signal amplitude 1.25V DC offset 1.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Fault finding chart of the receiver The phone layout has dedicated test points for the analogue differential RX I and Q signals (RXIINP, RXIINN, RXQINP, RXQINN) from Mjoelner RF ASIC to UEM. The BB part is used to measure those signals by means of RSSI reading. It is assumed that correct calibration of RSSI reading has been carried out in production.
Issue 3 05/2004 2004 Nokia Corporation. No No = to be done in defective band only Apply -92dBm signal from Generator to Antenna Connector phone: local, burst mode = to be done in all 3 bands Rx chain functional Yes Calibrtion.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care RX signal paths The signal paths of the receiver are shown in following block diagram. Note that the diagram shows GSM900 (or GSM850) receiver (above), GSM1900 receiver (middle) and GSM1800 receiver (below).
Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Nokia Customer Care RX front-end The RX front-end includes three SAW filters for GSM850/GSM900 (Z604), GSM1800 (Z602) and GSM1900 (Z603). They are matched to the corresponding LNA inputs of Mjoelner RF ASIC (N601) with differential matching circuits (LC-type). The SAW filters provide out-of-band blocking immunity. The integrated LNAs provide the front-end gains. Each of the SAW filters has a single-ended input and a balanced output.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Transmitter Description and Troubleshooting General instructions for TX troubleshooting Connect a RF cable between the test jig and the measurement equipment (GSM test equipment, power meter, spectrum analyzer, or similar). Make use of an adequate attenuator at the input of the measurement equipment (10dB to 20dB are recommended for a spectrum analyzer or a power meter).
Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Nokia Customer Care Figure 10: Transmitter signal paths VANTL / VANTM / VDDDIG 3 RF Controls VB_DET VTXLOL VTXLOH RF Controls VTXBH VTXBL TX PCN Ant Switch Dir.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care both signal are going through the dual directional coupler (one of the power control loop components) to the antenna switch. Note: There are two different kinds of PAs applicable (from Renesas (RH-50) or Agilent and Renesas (RH19)). Antenna switch (TX/RX switch) The antenna switch operates as a diplexer for the RX and TX signals. Moreover, it suppresses the TX harmonics generated by the PA.
Nokia Customer Care Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting TX PA Mode Free TX Power Level 10 TX Data Type Random The setup should now look like this in case of e.g. GSM850 (RH-50): Now the measurement equipment should detect the following output signal of the phone: Pout = +23dBm @ 897.4MHz or +23dB @ 836.6 MHz If this is not the case, then go to the following fault finding chart. Issue 3 05/2004 2004 Nokia Corporation.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Fault finding chart for GSM850 or GSM900 transmitter In the following, the TXP signal is used as a trigger-signal. For this purpose a TXP test point is provided on the PWP, refer to figure 3 “Test points of the transmitter”.
Nokia Customer Care Issue 3 05/2004 Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting 2004 Nokia Corporation.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care GSM1800 (DCS/PCN) transmitter General instructions for GSM1800 TX troubleshooting Start the preparations as described in section “General Instructions for TX Troubleshooting”. Set operating mode to local mode. Select Maintenance Testing RF Controls Wait until the RF Controls window pops up.
Nokia Customer Care Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Now the measurement equipment should detect the following output signal of the phone. Pout = +20dBm @ 1747.8MHz If this is not the case, then go to the following fault finding chart. Issue 3 05/2004 2004 Nokia Corporation.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Fault finding chart for GSM1800 transmitter In the following, the TXP signal is used as a trigger-signal. For this purpose a TXP test point is provided on the PWP, refer to figure 3 “Test points of the transmitter”. Use Phoenix to select TX_Data Type: "1" or "0" TX Power Level: 5 Yes . Oscilloscope R612 C627 C717 C623 C605 VREF01 VR2 TXP VR5 VR3 Vdc = Vdc = V = Vdc = Vdc = 1.35 Volt 2.78 Volt 1.8 Volt 2.
Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Nokia Customer Care GSM1900 (PCS) transmitter General instructions for GSM1900 TX troubleshooting Start the preparations as described in section “General Instructions for TX Troubleshooting”. Set operating mode to local mode.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Now the measurement equipment should detect the following output signal of the phone. Pout = +20dBm @ 1880MHz If this is not the case, then go to the following fault finding chart. Page 35 2004 Nokia Corporation.
Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Nokia Customer Care Fault finding chart for GSM1900 transmitter In the following, the TXP signal is used as a trigger-signal. For this purpose a TXP test point is provided on the PWP, refer to figure 3 “Test points of the transmitter”. Use Phoenix to select TX_Data Type: "1" or "0" TX Power Level: 5 Yes Oscilloscope R612 C627 C717 C623 C605 VREF01 VR2 TXP VR5 VR3 Vdc = Vdc = V = Vdc = Vdc = 1.35 Volt 2.78 Volt 1.8 Volt 2.78 Volt 2.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Synthesizer Description and Troubleshooting One PLL synthesizer is generating all the required frequencies of the 3 bands for RX and TX. The VCO frequency is divided by 2 or by 4 in Mjoelner depending on the active band. General instructions for synthesizer troubleshooting Connect the phone to a PC with DAU-9T cable (RS232) or DKU-5 cable (USB). The PC must have Phoenix Service Software and dongle installed.
Nokia Customer Care Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting The setup should now look like this in case of e.g. 850 MHz: The frequency of 3346.4 MHz (RH-50) or 3769.6 MHz (RH-19) at the output of the VCO (G701) has to be measured with a resistive probe and a spectrum analyzer. The tuning voltage can easily be measured at the Vc input of the VCO (C712). The tuning voltage should be 2.3VDC .. 2.8VDC at fVCO = 3346.4 MHz (RH-50) or 3769.6 MHz (RH-19).
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care cies in the GSM850 or GSM900, GSM1800 and GSM1900 bands both RX and TX. The output frequency of the VCO is controlled by a DC voltage (Vc) of the PLL loop filter. The valid range of Vc is 0.7V– 3.8V when the PLL is in the steady state. The typical tuning sensitivity is 240MHz/V.
Issue 3 05/2004 2 To DCS/PCS Modulator 2 2 2 LOCNT REFCNT 2004 Nokia Corporation. SENSE Ref. VBEXT filter VREF1 RFCONV_0(9) VCXO Bias R2H/R2 RDIV NDIV ADIV VDDRXBB 2,7k Main Bias Circuit Resistor Ext/R2H/ R2 64/65 Sensor BIST / Temp.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Frequency lists GSM850 (RH-50) CH TX RX VCO TX VCO RX CH TX RX VCO TX VCO RX CH TX RX VCO TX VCO RX 128 824.2 869.2 3296.8 3476.8 178 834.2 879.2 3336.8 3516.8 228 844.2 889.2 3376.8 3556.8 129 824.4 869.4 3297.6 3477.6 179 834.4 879.4 3337.6 3517.6 229 844.4 889.4 3377.6 3557.6 130 824.6 869.6 3298.4 3478.4 180 834.6 879.6 3338.4 3518.4 230 844.6 889.
Nokia Customer Care Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting GSM900 (RH-19) q y CH T X RX VCO T X VCO RX CH T X RX VCO T X VCO RX 975 880,2 925,2 3520,8 3700,8 1 890,2 935,2 3560,8 3740,8 976 880,4 925,4 3521,6 3701,6 2 890,4 935,4 3561,6 3741,6 977 880,6 925,6 3522,4 3702,4 3 890,6 935,6 3562,4 3742,4 978 880,8 925,8 3523,2 3703,2 4 890,8 935,8 3563,2 3743,2 979 881,0 926,0 3524,0 3704,0 5 891,0 936,0 3564,0 3744,0 980 881,2 926,2 3524,8 3704,8 6 891,2 936,2 3564,8 3744,8 9
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care GSM1800 (RH-19/RH-50) Page 43 2004 Nokia Corporation.
Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Nokia Customer Care GSM1900 (RH-19/RH-50) CH 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 TX 1850,2 1850,4
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care DC supply current check For a quick check of the DC power supplies to the diagram below. Voltage drops are measured at the respective resistors pads. Note: Not all currents can be checked in such a way, see (not applicable) in the diagram. Voltage drop & current VR1A VR2 4.75 V 3.2 % 0.45 mA 2.78 V 3% 85 mA charge pump (VDDCP) Tx modulator (VDDTX) Dig. control (VDDDIG) Ant.
Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Nokia Customer Care RF Tuning Instructions General instructions for RF tuning • Provide the phone with power supply (nominal voltage is 3.7V). • Connect the phone to a PC with DAU-9T cable (RS232) (or DKU-5 cable (USB)). • Start Phoenix Service Software (dongle required). • Open FBUS connection.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care To further minimize the frequency error, an initial AFC value is determined by the DSP and written into RefOSCAFC register of the Mjoelner. Additionally the DSP algorithm determines three AFC slope coefficients Slope C1, C2, C3 during VCXO calibration. One AFC slope value is not sufficient for Mjoelner, because the AFC slope is a non-linear function versus time.
Nokia Customer Care Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting The setup should now look like this (RH-50): Select Automatic, press Start and a new window pops up: Select PM settings, press OK and the window closes. Now it is possible to press the Calibrate button in the RX Calibration window. Issue 3 05/2004 2004 Nokia Corporation.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Press Calibrate and a window pops up: Connect an external signal generator to the RF connector of the phone and compensate for external RF cable losses. Set the generator as shown in window above. If a radio communication tester (RH-50 & RH-19 CMU200, RH-19 CMD55, 8960, MT8801) is used, assure that continuous mode is switched on and modulation switched off. Press OK and the window closes.
Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Nokia Customer Care The results must be compared with the following limits: Value Typical Limit min. Limit max. VCXO cal 568 128 767 AFC value 3162 3062 3262 Slope C1 2760 1500 3500 Slope C2 -480 -700 -300 Slope C3 1 0 1 Rssi 3 79 77 82 Rssi 6 102 100 105 For production testing a more sophisticated check of the C1 and C2 values is performed according to the following formulas: 1 1312
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care RX calibration GSM1800 (DCS/PCN) Set operating mode to local mode. Select Maintenance Alt-M Tuning T RX Calibration C Wait until the RX Calibration window pops up. Select Band GSM 1800 Autom. -60dBm 1st Man. -50dBm 2nd Man. Load from Phone Save to Phone -85dBm X X The setup should now look like this: Page 51 2004 Nokia Corporation.
Nokia Customer Care Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Select Automatic, press Start and the window looks like below: Press Calibrate and a window pops up: Connect an external signal generator to the RF connector of the phone and compensate for the external RF cable losses. Set the generator as shown in the window, above.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care A typical result will look like this: The results must be compared with the following limits: Value Typical Limit min. Limit max. Rssi 3 76 74 79 Rssi 6 99 96 103 If Rssi 3 and Rssi 6 are within the limits, all other Rssi values are valid, too. If not, continue according to the instructions of RX fault finding flow chart.
Nokia Customer Care Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting 1st Man. -50dBm 2nd Man. Load from Phone Save to Phone -85dBm X X The setup should now look like this: Select Automatic, press Start and and the window reads PM values from phone: Issue 3 05/2004 2004 Nokia Corporation.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Press Calibrate and a window pops up: Connect an external signal generator to the RF connector of the phone and compensate for the external RF cable losses. Set the generator as shown in the window above. If a radio communication tester (RH-50 & RH-19 CMU200; RH-19 CMD55, 8960, MT8801) is used, assure to have continuous mode switched on and modulation switched off. Press OK and the window closes.
Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Nokia Customer Care If Rssi 3 and Rssi 6 are within the limits, all other Rssi values are valid, too. If not, continue according to the instructions of RX Fault finding flow chart. Press Stop in the RX Calibration window and the GSM1900 RX Calibration is finished. RX band filter response compensation This alignment is necessary to compensate the frequency response of the RX band filters (SAW filters).
Nokia Customer Care Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Manual tuning Press Start and then Tune and a window pops up: Connect an external signal generator to the RF connector of the phone and compensate for the external RF cable losses. Set the generator as shown in the window above. If a radio communication tester (CMD55, CMU200, 8960, MT8801) is used, assure to have continuous mode switched on and modulation switched off.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Press Start and then Tune and a window pops up: Press OK and then Stop and the GSM RX Band Filter Response Compensation is finished. Limits Regarding the limits, the value of N4 is given below. Concerning the other filter frequencies please refer to Appendix A where all FLALI testcases are listed together with the limits. Value Typical Limit min. Limit max. N4 0 -0.3 0.
Nokia Customer Care Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting The RX Band Filter Response Compensation window pops up. The setup should now look like this: Select Input Signal Level Load from Phone Save to Phone Tuning mode -60dBm X X Manual Manual tuning Press Start and then Tune and a window pops up: Connect an external signal generator to the RF connector of the phone and compensate for the external RF cable losses. Set the generator as shown in the window above.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Press OK and a new window pops up: Set the generator as shown in the window above. Press OK and a new window pops up. Repeat this sequence until the calibration is finalized on all of the 9 channels. Press Stop and the GSM 1800 RX Band Filter Response Compensation is finished. Auto tuning A faster and more convenient method for Band Filter Calibration can be performed by clicking on "Auto Tuning".
Nokia Customer Care Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Limits Regarding limits the value for N4 is given below. Concerning the other filter frequencies please refer to Appendix A where all FLALI testcases are listed together with the limits. Value Typical Limit min. Limit max. N4 0 -0.3 0.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Rx Band Filter Response Compensation window pops up. The setup should now look like this: Select Input Signal Level Load from Phone Save to Phone Tuning mode -60dBm X X Manual Manual tuning Press Start and Tune and a window pops up: Connect an external signal generator to the RF connector of the phone and compensate for the external RF cable losses. Set the generator as shown in the window above.
Nokia Customer Care Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Press OK and a new window pops up: Set the generator as shown in the window above. Press OK and a new window pops up. Continue the sequence until the calibration is finalized on all 9 channels. Press Stop and the GSM1900 RX BandFilter Reopens Compensation is finished. Auto tuning A faster and more convenient method for Band Filter Calibration can be performed by clicking on "Auto Tuning".
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Press Automatic Tuning mode and Tune and a window pops up: Connect an external signal generator to the RF connector of the phone and the signal generator will generate the programmed frequencies after pressing OK. Press Stop and the GSM 1900 RX Bad Filter Response Compensation is finished. Limits Regarding the limits, the value of N4 is given below.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care RX channel select filter calibration In the following the calibration of the Base Band filter inside Mjoelner is described. It is performed by internally measuring of a prototype filter. For this reason the calibration is done only once, and not separately in 3 bands.
Nokia Customer Care Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting TX power level tuning This tuning must be done in all three bands. Note: TX Power Tuning must be done with a peak power meter, e.g. Anritsu model ML2408A with Anritsu Peak Power Sensor MA2442A and a suitable attenuator.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Select Permanent memory and press Start. Select TX Data Type Random The setup should now look like this (e.g.GSM850): Select TX PA Mode Save to High Permanent memory Adjust DAC Values in TX PA mode ‘High’ for all power levels according to the target values: TX PA Mode Power level Target power (dBm) High 5 32.
Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Nokia Customer Care Select TX PA Mode Low Adjust DAC Values in TX PA mode ‘Low’ for all power levels according to the target values. TX PA Mode Power level Target power (dBm) Low 7 30 15 13 19 5 Base levell -27 Press calculate, check if all levels match the target values, correct if necessary. Press Stop and the TX Power Level Tuning is finished.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care The setup should now look like this: Select TX PA Mode High Adjust DAC Values for all power levels according to the target values. Power level Power (dBm) 0 30 (RH-19) / 29,5 (RH-50) 11 8 15 0 Base levell -27 The Power levels may differ from the target levels mentioned. Make sure that the output power for Power Level 0 is equal or lower than 1dB below the saturation output power.
Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Nokia Customer Care TX Power Level Tuning Wait until the TX Power Level Tuning window pops up. Connect a calibrated power meter to the RF connector of the phone. Select Band GSM 1900 Active Unit TX Select Permanent memory (Load and Save). Select TX Data Type Random The setup should now look like this: Select TX PA Mode High Adjust DAC Values for all power levels according to the target values.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care ration output power is only 30.7dBm. Press calculate, check if all levels match the target values, correct if necessary. Press Stop and the GSM1900 TX Power Level Tuning is finished. TX I/Q tuning This tuning must be performed in all three bands.
Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Nokia Customer Care If a spectrum analyzer is used, make the following settings. GSM850/GSM900 Center Frequency 836.6 MHz / 897.4 MHz Frequency Span 300 kHz Resolution Bandwidth 3kHz Video Bandwidth 3kHz Sweep Time 3 sec. Sweep Type Clear/Write Detector Type Max Peak Reference level 35 dBm Marker 1 836.53229 MHz / 897.33229 MHz Marker 2 836.6 MHz / 897.4 MHz Marker 3 836.66771 MHz / 897.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care The setup should now look like this: Page 73 2004 Nokia Corporation.
Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Nokia Customer Care The spectrum analyzer shows a plot like this in case of 850 MHz: The spectrum analyzer now shows a plot like this in case of 900 MHz : RBW 3 kHz RF Att Ref Lvl 25.88 dBm VBW 3 kHz Mixer 35 dBm 897.33229000 MHz SWT 3 s Marker 1 [T1] Unit 30 dB -20 dBm dBm 35 21 dB Offset 30 1 [T1] 1 25.88 dBm A 897.33229000 MHz LN 2 [T1] -7.19 dBm 20 897.40000000 MHz 3 [T1] -11.55 dBm 897.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care After tuning to the minimum the level difference between marker 2 and the peak levels at marker 1 must exceed 40dB. The spectrum analyzer shows a plot like this in case of 850 MHz: The spectrum analyzer now shows a plot like this in case of 900 MHz : Marker 1 [T1] RBW 3 kHz RF Att Ref Lvl 25.82 dBm VBW 3 kHz Mixer 35 dBm 897.
Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Nokia Customer Care After tuning to the minimum the level difference between marker 3 and the peak level at marker 1 must exceed 40dB. The spectrum analyzer shows a plot like this in case of 850 MHz. The spectrum analyzer now shows a plot like this in case of 900 MHz: RBW 3 kHz RF Att Ref Lvl 25.61 dBm VBW 3 kHz Mixer 35 dBm 897.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Compare the results in the TX IQ Tuning Window with the limits below: Value Typical Limit min. Limit max. TX I DC offset 0.1 -6 6 TX Q DC offset 0 -6 6 Amplitude difference 0 -1 1 Phase difference 87.5 80 100 Select in the TX IQ Tuning Window: Select ; Save to Product Press Stop and the values are stored in the phone. The GSM850/GSM900 TX IQ Tuning is now finished.
Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Nokia Customer Care Connect a Spectrum Analyzer or GSM tester with the option ‘Narrow Spectrum' to the RF connector of the phone. If a spectrum analyzer is used, make the following settings. GSM1800 Center Frequency 1747.8MHz Frequency Span 300 kHz Resolution Bandwidth 3 kHz Video Bandwidth 3 kHz Sweep Time 3 sec. Sweep Type Clear/Write Detector Type Max Peak Reference level 35 dBm Marker 1 1747.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care The setup should now look like this: The spectrum analyzer now shows a plot like this: Marker 3 [T1] RBW 3 kHz RF Att Ref Lvl -21.48 dBm VBW 3 kHz Mixer 35 dBm 1.74786771 GHz SWT 3 s Unit 30 dB -20 dBm dBm 35 21 dB Offset 3 [T1] -21.48 dBm 30 1 1 [T1] 20 A 1.74786771 GHz LN 22.02 dBm 1.74773229 GHz 2 [T1] -4.75 dBm 1.
Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Nokia Customer Care The spectrum analyzer now shows a plot like this: RBW 3 kHz RF Att Ref Lvl -22.33 dBm VBW 3 kHz Mixer 35 dBm 1.74786771 GHz SWT 3 s Marker 3 [T1] 30 dB -20 dBm Unit dBm 35 21 dB Offset 3 [T1] -22.33 dBm 30 1 A 1.74786771 GHz LN 22.01 dBm 1 [T1] 20 1.74773229 GHz 2 [T1] -24.97 dBm 1.74780000 GHz 10 1MA 0 -10 3 -20 2 -30 -40 -50 F2→ F1→ -60 -65 Center 1.7478 GHz Date: 24.OCT.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care Compare the results in the TX IQ Tuning Window with the limits below: Value Typical Limit min. Limit max. TX I DC offset 0.1 -6 6 TX Q DC offset -0.1 -6 6 Amplitude difference -0.1 -1 1 Phase difference 89.5 80 100 Select in the TX IQ Tuning Window: Select ; Save to Product Press Stop and the values are stored in the phone. The GSM1800 TX IQ Tuning is now finished.
Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Nokia Customer Care Connect a Spectrum Analyzer or GSM tester with the option ‘Narrow Spectrum' to the RF connector of the phone. If a spectrum analyzer is used, make the following settings. GSM1900 Center Frequency 1880MHz Frequency Span 300 kHz Resolution Bandwidth 3 kHz Video Bandwidth 3 kHz Sweep Time 3 sec. Sweep Type Clear/Write Detector Type Max Peak Reference level 35 dBm Marker 1 1879.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care The setup should now look like this: The spectrum analyzer now shows a plot like this: Marker 3 [T1] RBW 3 kHz RF Att Ref Lvl -17.74 dBm VBW 3 kHz Mixer 35 dBm 1.88006771 GHz SWT 3 s Unit 30 dB -20 dBm dBm 35 21 dB Offset 3 [T1] -17.74 dBm 30 1 1 [T1] 20 A 1.88006771 GHz LN 21.90 dBm 1.87993229 GHz 2 [T1] -9.59 dBm 1.
Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting Nokia Customer Care After tuning to the minimum the level difference between marker 2 and the peak levels at marker 1 must exceed 40dB. The spectrum analyzer now shows a plot like this: Marker 3 [T1] RBW 3 kHz RF Att Ref Lvl -17.32 dBm VBW 3 kHz Mixer 35 dBm 1.88006771 GHz SWT 3 s 30 dB -20 dBm Unit dBm 35 21 dB Offset 3 [T1] -17.32 dBm 30 1 1 [T1] 20 A 1.88006771 GHz LN 21.92 dBm 1.87993229 GHz 2 [T1] -26.
RH-19/RH-50 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care The spectrum analyzer now shows a plot like this: RBW 3 kHz RF Att Ref Lvl -33.67 dBm VBW 3 kHz Mixer 35 dBm 1.88006771 GHz SWT 3 s Marker 3 [T1] Unit 30 dB -20 dBm dBm 35 21 dB Offset 3 [T1] -33.67 dBm 30 1 1 [T1] 20 A 1.88006771 GHz LN 21.83 dBm 1.87993229 GHz 2 [T1] -25.11 dBm 1.88000000 GHz 10 1MA 0 -10 -20 2 -30 3 -40 -50 F2→ F1→ -60 -65 Center 1.88 GHz Date: 24.OCT.
Nokia Customer Care Company Confidential RH-19/RH-50 7 - RF Description and Troubleshooting This page has been intentionally left blank Issue 3 05/2004 2004 Nokia Corporation.
Nokia Customer Care RH-19/RH-50 Series Cellular Phones Appendix 7A: FLALI Test Cases Issue 3 05/2004 2004 Nokia Corporation.
RH-19/RH-50 Company Confidential Appendix 7A: FLALI Test Cases Nokia Customer Care Appendix A: FLALI Test Cases with Hints for Repair Step Name Limits Low Limits High Initialize RF Calibration -0.5 0.5 Meas Operation Start Current 3.0 70.0 Program flash 0.5 1.5 Program flash PPM 0.5 1.5 Reset Phone -0.5 0.5 Meas Local Mode Current 3.0 70.0 Check MCU-sw version 0.0 13.0 Write Product Info 0.5 1.5 Write_Product_Profile -0.5 0.5 Read PCI Version 0.0 2000.0 Selftest_A -0.
Company Confidential RH-19/RH-50 Appendix 7A: FLALI Test Cases Nokia Customer Care Step Name Limits Low Limits High - Check VCXO_VALUE 128.0 767.0 VCXO/AFC calibration works only, if RX850/ RX900 chain is working. - Check AFC_VALUE 3062.0 3262.0 If calibration does not work at all (fail at “Tuning RX GSM85/GSM9 RSSI”), check the RFBUS signals. - Check AFC_Coeff1 0.0 9999.0 Check voltage supplies - Check AFC_Coeff2 -999.0 0.0 VDDXO@C607, VDDBBB@C636 (2.
RH-19/RH-50 Company Confidential Appendix 7A: FLALI Test Cases Step Name Limits Low Limits High - Check RX GSM85/GSM9 Band Filter First -6.0 2.0 - Check RX GSM85/GSM9 Band Filter N1 -3.0 1.0 - Check RX GSM85/GSM9 Band Filter N2 -3.0 1.0 - Check RX GSM85/GSM9 Band Filter N3 -3.0 1.0 - Check RX GSM85/GSM9 Band Filter N4 -2.0 1.0 - Check RX GSM85/GSM9 Band Filter N5 -3.0 1.0 - Check RX GSM85/GSM9 Band Filter N6 -3.0 1.0 - Check RX GSM85/GSM9 Band Filter N7 -3.0 1.
Company Confidential RH-19/RH-50 Appendix 7A: FLALI Test Cases Nokia Customer Care Step Name Limits Low Limits High Initialize VSA -0.5 0.5 Set VSA Parameters for GSM85/GSM9 TX Base -0.5 0.5 Start TX GSM85/GSM9 Pow Tunings -0.5 0.5 Tuning TX GSM85/GSM9 Base -31.0 -20.0 - Check GSM85/GSM9 TX Base Coef 0.1 0.2 Set VSA Parameters for GSM85/GSM9 TX Power -0.5 0.5 Meas TX GSM85/GSM9 PAH Tun Samples 0.0 40.0 Tuning TX GSM85/GSM9 PAH 31.5 32.5 End TX GSM85/GSM9 Pow Tunings -0.5 0.
RH-19/RH-50 Company Confidential Appendix 7A: FLALI Test Cases Nokia Customer Care Step Name Limits Low Limits High End TX GSM18 Pow Tunings -0.5 0.5 Meas GSM18 TX Pow PAH LOW -0.5 0.5 - Check GSM18 TX Pow PAH LOW0 28.0 32.0 - Check GSM18 TX Pow PAH LOW15 -3.0 3.0 Meas GSM18 TX Pow PAH HIGH -0.5 0.5 - Check GSM18 TX Pow PAH HIGH0 28.0 32.0 - Check GSM18 TX Pow PAH HIGH15 -3.0 3.0 Set VSA Parameters for GSM18 TX I/Q -0.5 0.5 Tuning TX GSM18 I/Q -0.5 0.
Nokia Customer Care Company Confidential RH-19/RH-50 Appendix 7A: FLALI Test Cases Step Name Limits Low Limits High Repair Comments - Check TX GSM19 Amp Diff Tuning -1.0 1.0 Maybe Mjoelner must be exchanged. - Check TX GSM19 Phase Diff Tuning 80.0 100.0 Meas TX GSM85/GSM9 I/Q MID5 -0.5 0.5 - Check TX GSM85/GSM9 I/Q Fo -120.0 -35.0 - Check TX GSM85/GSM9 I/Q Fo+67k -120.0 -40.0 Meas TX GSM18 I/Q MID0 -0.5 0.5 - Check TX GSM18 I/Q Fo -120.0 -35.0 - Check TX GSM18 I/Q Fo+67k -120.
RH-19/RH-50 Company Confidential Appendix 7A: FLALI Test Cases Nokia Customer Care This page has been intentionally left blank Page 8 2004 Nokia Corporation.
Nokia Customer Care RH-19/RH-50 Series Cellular Phones Appendix 7B: FinUI Test Cases Issue 3 05/2004 2004 Nokia Corporation.
RH-19/RH-50 Company Confidential Appendix 7B: FinUI Test Cases Nokia Customer Care Appendix B: FinUI Test Cases with Hints for Repair Limits Test Step Name St.De v Low High Avera ge Keypad_Start_Test 0 10 0.00 0.00 Testmode Current Meas 10 200 78.63 11.79 Read phone SW 0 5000 3.10 0.00 Read phone HW 0 5000 580.0 0 0.00 Initialize RF Calibration -0.5 0.5 0.00 0.00 Init TestSet -0.5 0.5 0.00 0.00 Set TestSet PCS -0.5 0.5 0.00 0.00 SIM Status 0.5 1.5 1.00 0.
Company Confidential RH-19/RH-50 Appendix 7B: FinUI Test Cases Nokia Customer Care Limits Test Step Name St.De v Repair Comments Low High Avera ge Keypad_Result_Power 1 1 1.00 0.00 Keypad Stuck Test 0 0 0.00 0.00 Vibra Test (Shock) 250 10000 2124. 47 1182. 07 Move robot On the Mic 0 0 1.00 0.00 Measure audio Bias Voltage 520 720 622.2 0 4.14 HYBRID MIC-XEAR (dB) 1,0 kHz -5 5 0.20 1.53 Move robot On The Earp 0 0 1.00 0.00 HYBRID XMIC-EAR (dB) 1,0 kHz -5 5 -0.
RH-19/RH-50 Company Confidential Appendix 7B: FinUI Test Cases Limits Test Step Name St.De v Nokia Customer Care Repair Comments Low High Avera ge - Check PCS TX Swit Spec 400 kHz H0 -90 -22 -30.43 0.97 - Check PCS TX Swit Spec -400 kHz H0 -90 -22 -31.08 1.00 -Check PCS TX Mod Spec 400kHz H0 0 15 4.39 0.95 -Check PCS TX Mod Spec -400kHz H0 0 15 5.35 0.91 - Check PCS BER -102 H 0 2 0.05 0.03 Check antenna connection. - Check PCS SACCH H0 4 12 8.72 0.
Company Confidential RH-19/RH-50 Appendix 7B: FinUI Test Cases Nokia Customer Care Limits Test Step Name St.De v Repair Comments Low High Avera ge - Check PCS Burst t=11 L0 -70 -6 -14.89 0.32 - Check PCS Burst t=12 L0 -120 -30 -76.64 3.00 - Check PCS Phase Error Peak L0 0 20 7.93 1.13 Check shielding and antenna connection. - Check PCS Phase Error Rms L0 0 5 2.63 0.
RH-19/RH-50 Company Confidential Appendix 7B: FinUI Test Cases Limits Test Step Name St.De v Nokia Customer Care Repair Comments Low High Avera ge End Call PCS -0.5 0.5 0.00 0.00 Set TestSet GSM -0.5 0.5 0.00 0.00 Set Fast Service Ch GSM -0.5 0.5 0.00 0.00 Create Call GSM -0.5 0.5 0.10 0.00 GSM Measure All Ch=H TxL=5 0 35 0.00 0.00 - Check GSM Freq Error H5 -90 90 10.69 7.32 Check shielding and antenna connection. - Check GSM Phase Error Peak H5 0 20 6.05 0.
Company Confidential RH-19/RH-50 Appendix 7B: FinUI Test Cases Nokia Customer Care Limits Test Step Name St.De v Repair Comments Low High Avera ge - Check GSM Burst t=9 H19 -1 1 -0.01 0.02 - Check GSM Burst t=11 H19 -70 -1 -13.66 1.57 - Check GSM Burst t=12 H19 -120 -22 -68.50 1.84 GSM Measure All Ch=L TxL=5 -0.5 35 0.00 0.00 - Check GSM Burst t=1 L5 -120 -30 -80.09 2.19 - Check GSM Burst t=2 L5 -70 -6 -16.24 0.26 - Check GSM Burst t=4 L5 -1 1 -0.71 0.
RH-19/RH-50 Company Confidential Appendix 7B: FinUI Test Cases Limits Test Step Name St.De v Nokia Customer Care Repair Comments Low High Avera ge - Check GSM Burst t=1 L19 -120 -22 -56.70 1.95 - Check GSM Burst t=2 L19 -70 -1 -27.92 0.92 - Check GSM Burst t=4 L19 -1 1 -0.43 0.06 - Check GSM Burst t=9 L19 -1 1 -0.01 0.02 - Check GSM Burst t=11 L19 -70 -1 -15.54 1.88 - Check GSM Burst t=12 L19 -120 -22 -69.77 2.01 Handover GSM-DCS -0.5 0.5 0.00 0.
Company Confidential RH-19/RH-50 Appendix 7B: FinUI Test Cases Nokia Customer Care Limits Test Step Name St.De v Repair Comments Low High Avera ge Meas DCS TX Power H1 25.5 30.5 27.75 0.37 - Check DCS TX Power Linearity H0-H1 0.5 3.5 1.88 0.10 Meas DCS PVT TX Power H15 -5 5 -0.30 0.42 - Check DCS Burst t=1 H15 -120 -20 -47.23 1.77 - Check DCS Burst t=2 H15 -70 -1 -23.66 1.26 - Check DCS Burst t=4 H15 -1 1 -0.28 0.06 - Check DCS Burst t=9 H15 -1 1 0.04 0.
RH-19/RH-50 Company Confidential Appendix 7B: FinUI Test Cases Limits Test Step Name St.De v Nokia Customer Care Repair Comments Low High Avera ge - Check DCS SACCH L0 4 12 9.57 0.50 Check RX1800 path (antenna switch, SAW filter, RX IQ interface) - Check DCS TX Power L0 27 33 30.41 0.64 Check shielding and antenna connection Meas DCS TX Power L1 25.5 30.5 28.50 0.64 Check shielding and antenna connection - Check DCS TX Power Linearity L0-L1 0.5 3.5 1.91 0.
Nokia Customer Care Troubleshooting Appendix C RH-19/RH-50 Appendix 7C: Component Placement with Test Points and Detailed Description Table of Contents Page No Table of Contents ........................................................................................................................................................................ 1 Receiver Test Points (1 of 1) ..................................................................................................................................
Nokia Customer Care Troubleshooting Appendix C RH-19/RH-50 Receiver Test Points Testpoint RX GSM Band GSM850/GSM900 Testpoint VR6 Testpoint VR4 Active Unit RX Band GSM850/GSM900 Band GSM850/GSM900 Operation Mode Continuous Active Unit RX Active Unit RX RX/TX Channel 190 (GSM850) 37 (GSM900) Operation Mode Continuous or Burst Operation Mode Continuous or Burst AGC 14 RX/TX Channel RX/TX Channel Input Power -60dBm 190 (GSM850) 37 (GSM900) 190 (GSM850) 37 (GSM900) Input Fre
Nokia Customer Care Troubleshooting Appendix C RH-19/RH-50 Synthesizer Test Points Synthesizer Test Points (1/1) Testpoint VR3 Band GSM900 Active Unit RX Operation Mode Continuous or Burst Testpoint Utune Band Active Unit Operation Mode RX/TX Channel Frequency DC Level Note GSM1800 GSM1900 GSM1900 TX TX RX Continuous 512 512 810 3420.4MHz 3700.4MHz 3979.6MHz ~ 1.1V ~ 2.3V ~ 3.
Nokia Customer Care Troubleshooting Appendix C RH-19/RH-50 Transmitter Test Points (1 of 3) Transmitter Test Points (1/3) CONT1,2,3 Testpoint GSM850/900/1800/1900 GSM900/1800/1900 Band Active Unit TX Operation Mode Burst DC Level 0V 0V 0V Antenna Switch Control Signals in TX Mode Graph Band TXIOUTP (R713/1) TXIOUTN (R713/3) TXQOUTP (R713/7) TXQOUTN (R713/5)) GSM850/GSM900 or GSM1800 or GSM1900 GSM900 or GSM1800 or GSM1900 Active Unit TX Operation Mode Burst RX/TX Channel 190/37 or or
Nokia Customer Care Troubleshooting Appendix C RH-19/RH-50 Transmitter Test Points (2 of 3) Transmitter Test Points (2/3) Testpoints DET @ V801/C804 DET @ V801/C804 Band GSM850/GSM900 GSM900 GSM1800 or GSM1900 Active Unit TX TX Operation Mode Burst Burst DC Offset 0Vdc 0Vdc Graph RFRF detector output voltage: GSM850/GSM900; PL5 = 33dBm; nodeV801-C804 V801-C804 detector output voltage: GSM900; PL5=33dBm; node GSM850/ GSM900 GSM900 PL5 Testpoint Antenna Feed Testpoint Antenna Feed B
Nokia Customer Care Troubleshooting Appendix C RH-19/RH-50 Transmitter Test Points (3 of 3) CONT1 (VANTM) Transmitter Test Points (3/3) VREF01 VR3 Antenna Feed CONT1 VREF01 VR3 VR2 TXIOUTP VR2 (VANTM) TXIOUTP Antenna Feed Testpoints (VPCTRL GSM850/GSM900) N801 / Pin 10 (VPCTRL EGSM900) N801 / Pin 11 (VPCTRL GSM1800/1900) Band GSM900 GSM850/GSM900 GSM1800 or GSM1900 Active Unit TX TX Operation Mode Burst Burst DC Offset 0Vdc 0Vdc Graph GSM850/ GSM900 GSM900 PL5 PL5 Vpctrl EGSM9
