TECHNICAL MANUAL FOR COMPACT VHF RT2047/D S.P.
RT2047 DSC - PART I CONTENTS 1 1.1 GENERAL INFORMATION INTRODUCTION 1-1 1-1 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 INSTALLATION INSTALLATION HINTS MOUNTING POSSIBILITIES DIMENSIONS AND DRILLING PLAN HANDSET MICROTELEPHONE CONNECTOR POWER SUPPLY POWER AND EXT.
RT2047 DSC - PART II CONTENTS 1 1.1 1.2 1.3 1.4 1.5 GENERAL INFORMATION GENERAL DESCRIPTION TECHNICAL DATA CONTROLS PRINCIPLE OF OPERATION BLOCKDIAGRAM 1-1 1-1 1-2 1-3 1-5 1-7 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 2.14 2.15 2.
RT2047 DSC - PART I CONTENTS 1 GENERAL INFORMATION 1-1 1.
RT2047 DSC - PART I 1 GENERAL INFORMATION 1.1 INTRODUCTION The RT2047 VHF Radiotelephone has been designed to be used with the Compact 2000 Module Programme. The VHF RT2047 can either be installed and operated as an independent unit or in combination with the other modules in the Compact 2000 programme.
RT2047 DSC - PART I CONTENTS 2 INSTALLATION 2-1 2.1 INSTALLATION HINTS 2-1 2.2 MOUNTING POSSIBILITIES 2-2 2.3 DIMENSIONS AND DRILLING PLAN 2-4 2.4 HANDSET 2-9 2.5 MICROTELEPHONE CONNECTOR 2-9 2.6 POWER SUPPLY 2-9 2.7 POWER AND EXT. LOUDSPEAKER CONNECTOR 2-10 2.8 ANTENNAS 2-10 2.9 SPECIAL OPTIONS 2-10 2.10 REAR VIEW OF VHF RT2047 2-11 2.
RT2047 DSC - PART I 2 INSTALLATION 2.1 INSTALLATION HINTS Before installation of a VHF RT2047 the following points must be observed: WHAT FACILITIES WILL HAVE TO BE ENABLED ? Selcall, private channels, US-mode, dual watch, scanning facilities, etc. The procedure for enabling these facilities is described in the manual: INSTRUCTIONS FOR IDENTITY AND SERVICE PROGRAMMING OF VHF RT2047.
2 INSTALLATION 2.
2 INSTALLATION RT2047 DSC - PART I BULKHEAD AND CONSOLE 24892 Mounting kit H2063 24893 Mounting kit H2062 24891 Mounting kit H2064 IN CONJUNCTION WITH OTHER “S.P. RADIO” EQUIPMENT. Look up the INSTALLATION section for the S.P. RADIO unit in question.
2 INSTALLATION RT2047 DSC - PART I 2.3 DIMENSIONS AND DRILLING PLAN 115 UNIVERSAL MOUNTING BRACKET H2055 Permits a wide variety of installation possibilities, such as table top, bulkhead or deck head installation. Fur other possibilities such as console installation, installation with 19" rack or assembly of all units in the Compact programme on the bulkhead, see special information concerning installation of the Compact programme. 48 225 min.
2 INSTALLATION RT2047 DSC - PART I 4 pcs M5x8 24896 215 Mounting kit H2068 and H2055 48 117 132 F 225 B 132 C D A E 132 24895 α A B 0° 230 67 4.8° 243 67 9.6° 255 65 14.4° 265 62 Dimensions in mm. C D E F 117 129 142 155 230 245 262 270 67 72 78 89 117 117 115 112 WEIGHT Mounting kit H2068 and H2055 : 1.5 kg H2054 : 5.5 kg H2074 : 4.0 kg CRY2001 : 3.2 kg RT2047 : 5.
2 INSTALLATION RT2047 DSC - PART I Mounting kit H2063 min.295 24898 Free distance must be kept to allow free air circulation ambient temperature max. 40°C. 240mm 4.5mm 4.5mm 16mm 16mm 253mm 4 stk 6mm WEIGHT Mounting kit H2063 H2054 H2074 CRY2001 RT2047 113mm 100mm 4 stk 3.5mm uns for M3 DIN 963 16mm 16mm Cutting out 231x100mm 27444A 4 pcs M3x30 4 pcs cover 8 pcs M5x8 24770 PAGE 2-6 4 pcs M5x30 : 1.0 kg : 5.5 kg : 4.0 kg : 3.2 kg : 5.
2 INSTALLATION RT2047 DSC - PART I Mounting kit H2064 min.295 24772 Free distance must be kept to allow free air circulation ambient temperature max. 40°C. 253.00 240.00 4.5mm 4.5mm WEIGHT 20mm 20mm Cutting out 231x200mm 221mm 208mm 20mm 4 stk ø3.5mm uns for M3 DIN 963 200mm 20mm 4 stk ø6mm Mounting kit H2064 H2054 H2074 CRY2001 RT2047 : 1.5 kg : 5.5 kg : 4.0 kg : 3.2 kg : 5.
2 INSTALLATION RT2047 DSC - PART I Mounting kit H2062 min 295 28369 Free distance must be kept to allow free air circulation ambient temperature max. 40°C. 225.5mm 20mm 225.5mm 100mm 10mm 20mm Cutting out 451x100mm 108mm 121mm 2 stk ø3mm 8 stk ø3.5mm uns for M3 DIN 963 10mm WEIGHT Mounting kit H2062 H2054 H2074 CRY2001 RT2047 20mm 4 stk ø6mm 6mm 4.5mm 6mm 20mm 473mm 460mm 27450 27451 * 8 pcs M3x30 * 8 pcs M3x8 12 pcs M5x8 2 pcs M3x30 24773 4 pcs M5x30 PAGE 2-8 : 1.5 kg : 5.
2 INSTALLATION RT2047 DSC - PART I 2.4 HANDSET The handset can be placed anywhere near the VHF set. The cable is nine cored and connected to the rear plate through a 9 pin Sub D connector with lock nuts. Installation of the cable, see the drawings of the mounting brackets, section 2.3 DIMENSIONS AND DRILLING PLAN. The cable grommet must be placed in the most convenient groove in the mounting bracket. If more than one handset is needed, see section 2.12. and 2.13.
2 INSTALLATION RT2047 DSC - PART I 2.8 ANTENNAS All common 50 ohm antennas, which cover the used frequency range with a reasonable standing wave ratio, maximum 1.5, are applicable. The antenna is connected to the set by means of a 50 ohm coaxial cable with low loss, e.g. RG213U. At the cable end a PL259 plug is mounted. The antenna must be placed as high and as free of obstructions as possible. The horizontal distance to metal parts must be at least 1.0 metre. S. P.
2 INSTALLATION RT2047 DSC - PART I 2.10 REAR VIEW OF VHF RT2047 Screws for Tx Power Transistor T401’s heat sink conductor. Power Supply connector P802 Cable groove for special options 12V DC 28368 Screws for Regulator Transistors heat sink on Interface unit(6).
2 INSTALLATION RT2047 DSC - PART I 2.11 STANDARD FREQUENCY TABLE &+$11(/ 75$160,77,1* )5(48(1&< 0+] 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 77 78 79 80 81 82 83 156.050 156.100 156.150 156.200 156.250 156.300 156.350 156.400 156.450 156.500 156.550 156.600 156.650 156.700 156.750 156.800 156.850 156.900 156.950 157.000 157.050 157.100 157.150 157.200 157.250 157.300 157.350 157.400 156.025 156.075 156.125 156.
RT2047 DSC - PART II CONTENTS 9546 1 GENERAL INFORMATION 1-1 1.1 GENERAL DESCRIPTION 1-1 1.2 TECHNICAL DATA 1-2 1.3 CONTROLS 1-3 1.4 PRINCIPLE OF OPERATION 1-5 1.4.1 FREQUENCY GENERATION 1-5 1.4.2 RECEIVER 1-5 1.4.3 TRANSMITTER 1-5 1.4.4 THE MICROCOMPUTERS 1-5 1.
RT2047 DSC - PART II 1 GENERAL INFORMATION 1.1 GENERAL DESCRIPTION RT2047 can operate in duplex and simplex mode. RT2047 is provided with built in duplex-filter for duplex communication with one antenna. RT2047 includes all 55 international and U.S. VHF marine channels, and is prepared for up to 20 private channels to be selected as simplex or duplex channels. As option up to 67 private channels can be provided.
1 GENERAL INFORMATION RT2047 DSC - PART II 1.2 TECHNICAL DATA VHF RT2047 fulfils the International CAPT regulations. GENERAL SPECIFICATIONS All international maritime VHF channels Private Channels 20 as option up to 67 Operation Duplex and Simplex Modulation G3EJN (Phase) Antenna Impedance 50 ohm Frequency Stability +/- 10 ppm Temperature Range -20 C to +55 C Nominal Power Supply 13.
1 GENERAL INFORMATION RT2047 DSC - PART II 1.3 CONTROLS SCAN SCAN PROG VOL VOL SQ SQ STOP OFF RUN 16 SCAN DELETE 3 2 SCAN TIME D.W. 4 5 SELCALL RESET SELCALL TEST 7 8 9 P ENT USA ON SCAN ADD 1 Scan DW USA CQ Duplex Shift Call Vol SQ 1W Tx SHIFT 6 1W DIM 0 23990 Press ON OFF Turns the set on or off. VOL Press Increases volume progressively in 16 steps. VOL Press Reduces volume progressively in 16 steps.
1 GENERAL INFORMATION RT2047 DSC - PART II SHIFT FUNCTIONS SCAN Selects scanning programmes. Press Press Press Press Press SCAN ADD SCAN DELETE SCAN PROG SCAN TIME Adds a channel to the scanning table. Deletes a channel from the scanning table. Stores the current scanning programme in the memory. Selects the scan time from 1 to 99 seconds. The time chosen will be used to listen on one of the secondary channels receiving a signal. D.W. Selects the dual watch facility.
1 GENERAL INFORMATION RT2047 DSC - PART II 1.4 PRINCIPLE OF OPERATION 1.4.1 FREQUENCY GENERATION The frequencies are generated from a crystal oscillator operating on 21 MHz. The 21 MHz is divided in the REFERENCE DIVIDER to 2.1 MHz which is the input to the RX-REFERENCE DIVIDER and also the clock-signal for the microcomputer on the Interface Unit. In the RX-REFERENCE DIVIDER the 2.1 MHz is divided by 168 to 12.5 KHz which is reference for the PHASE DETECTOR.
1 GENERAL INFORMATION PAGE 1-6 RT2047 DSC - PART II 9543
1 GENERAL INFORMATION RT2047 DSC - PART II INTERFACE (MODULE 6) 2.1MHz Rx-Filter Control-AMP Antenna Relay fRx +13V PS -13V PS ON/OFF to 24V Supply RECEIVER (MODULE 100) Filter Control First Mixer RF-AMP 21.4 MHz IF Second Mixer f2IF 455 kHz IF and Detector Programmable Counter 7 +13V ON/OFF AMP/Limiter 1 ÷2 Switched Capacitor Bandpass Filter +13V 2.
RT2047 DSC - PART II CONTENTS 9546 2 CIRCUIT DESCRIPTION 2-1 2.1 RECEIVER UNIT MODULE 100 2-1 2.2 RX-SYNTHESIZER UNIT MODULE 200 2-4 2.3 TX-EXCITER UNIT MODULE 300 2-8 2.4 TX-POWER AMPLIFIER MODULE 400 2-13 2.5 ANTENNA RELAY (500) 2-13 2.6 INTERFACE UNIT MODULE 6/600 2-17 2.7 KEYBOARD UNIT MODULE 7/700 2-24 2.8 DUPLEX FILTER MODULE 800 2-28 2.9 FILTER UNIT MODULE 9/900 2-29 2.10 MAIN DIAGRAM 2-32 2.11 MICROTELEPHONE INSTALLATION 2-34 2.
2 CIRCUIT DESCRIPTION 2 RT2047 DSC - PART II CIRCUIT DESCRIPTION 2.1 RECEIVER UNIT MODULE 100 The receiver unit includes the following circuits: 2.1.1 RF-AMPLIFIER AND FIRST MIXER The RF-amplifier working in the frequency range 155.4 MHz to 162.4 MHz consists of the transistor Q101 and the two double-tuned filters surrounding it. The signal is led from the aerial through the duplex-filter to the antenna switch and from there to the receivers input-filter.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II COMPONENT LOCATION RECEIVER UNIT MODULE 100 View from component side with upper side tracks. View from component side with lower side tracks.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II DIAGRAM RECEIVER UNIT MODULE 100 AC voltages outside frame of diagram. : Measured with oscilloscope or frq. counter. : Measured with test probe. : Connections to module. [] : Approx. measurement with test probe. Test conditions: Voltages without brackets: Antenna signal 1 mV pd: Df= +3 kHz; fm = 1 kHz Voltages in brackets: Antenna signal 10 mV pd: Df = + 3 kHz; fm = 1 kHz This diagram is valid for PCB rev. 32127B.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II 2.2 RX-SYNTHESIZER UNIT MODULE 200 The RX-synthesizer unit includes the following circuits: 2.2.1 RX-VCO AND BUFFER AMPLIFIERS The transistor T203 is producing 8.3 V supply voltage for the RX-VCO and bias for the buffer amplifiers consisting of the transistors T201 and T204. The RX-VCO comprises a Field Effect Transistor T202 (the oscillator transistor), two coaxial coils L203, L204, two capacitors C212, C214, and a variable capacitance diode D201.
2 CIRCUIT DESCRIPTION 2.2.4 RT2047 DSC - PART II PHASE DETECTOR PUMP AND LOOP FILTER We assume that the RX-VCO frequency has decreased from its nominal frequency, The phase-detector now sends negative correction pulses from IC202 pin 17 to T210, which goes on. A current will then flow from C225 through R225 and R229 and into T210. This current will discharge C225 forcing the output voltage from the transistors T205 and T206 to increase until the VCO reaches the correct frequency.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II COMPONENT LOCATION RX-SYNTHESIZER UNIT MODULE 200 View from component side with upper side tracks. View from component side with lower side tracks.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II DIAGRAM RX-SYNTHEZISER UNIT MODULE 200 AC voltages outside frame of diagram. : Measured with oscilloscope or frq. counter. : Measured with test probe. : Connections to module. [] : Approx. measurement with test probe. Test conditions: Voltages without brackets: Antenna signal 1 mV pd: Df= +3 kHz; fm = 1 kHz Voltages in brackets: Antenna signal 10 mV pd: Df = + 3 kHz; fm = 1 kHz This diagram is valid for PCB rev. 23694D.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II 2.3 TX-EXCITER UNIT MODULE 300 The TX exciter unit contains the following circuits: 2.3.1 INSULATION BUFFER AND 16.8 MHZ MIXER From RX-VC0 the signal is led to transistor T301 and from TX-VC0 the signal is led to transistor T302. The transistors are not coupled with common base and act as buffer amplifiers. The mixed signal over resistor T305 is led to the mixer amplifier T303 via capacitor C305.
2 CIRCUIT DESCRIPTION 2.3.4 RT2047 DSC - PART II TX-VCO The TX-VCO comprises a Field Effect Transistor T311 (oscillator transistor), two coaxial coils L309 and L310, the capacitors C343 and C345, and a variocapacitor diode D302. The frequency is mainly determined by L309, L310, C345, and D302. The TX-VCO is a Voltage Controlled Oscillator, where the control voltage from the loop filter determines the frequency by means of the variocapacitor diode D302.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II COMPONENT LOCATION TX-EXCITER UNIT MODULE 300 View from component side with upper side tracks. View from component side with lower side tracks.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II DIAGRAM TX-EXCITER UNIT MODULE 300 AC voltages outside frame of diagram. : Measured with oscilloscope or frq. counter. : Measured with test probe. : Connections to module. [] : Approx. measurement with test probe. Test conditions: Voltages without brackets: Antenna signal 1 mV pd: Df= +3 kHz; fm = 1 kHz Voltages in brackets: Antenna signal 10 mV pd: Df = + 3 kHz; fm = 1 kHz This diagram is valid for PCB rev. 23695D.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II PAGE 2-12 9543
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II 2.4 TX-POWER AMPLIFIER MODULE 400 The TX-power-amplifier includes the amplifier and a harmonic filter. 2.4.1 TX-POWER-AMPLIFIER The amplifier consists of a single transistor output amplifier and a two transistor power driver. The transistors are both tuned classic amplifier circuits. The amplifier is made on double sided epoxy board, using micro strip technique in the tuning circuits. The power driver is fed from a 50 ohm generator with a power level of 25 mW.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II COMPONENT LOCATION TX-POWER AMPLIFIER MODULE 400 AND ANTENNA RELAY (500) View from component side with upper side tracks. View from component side with lower side tracks.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II DIAGRAM TX-POWER AMPLIFIER MODULE 400 AND ANTENNA RELAY (500) AC voltages outside frame of diagram. : Measured with AF voltmeter. Test conditions. Voltages without brackets: Operating in Rx position. With antenna signal 1 mV EMF: f= +3 KHz; fm = 1 KHz Voltages in brackets: No antenna signal, squelch max. closed. Df = + 3 KHz; fm = 1 KHz This diagram is valid for PCB rev.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II PAGE 2-16 9543
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II 2.6 INTERFACE UNIT MODULE 6/600 2.6.1 ON/OFF FUNCTION ON When the ON/OFF push button is activated Q4-6 is turned on and the relay RE3-6 is engaged. When the µC leaves reset condition PC5 is set to high level and Q5-6 will be conducting, keeping Q4-6 on. OFF When the ON/OFF push button is activated again U19-6 receives a message on the serial interface. Then it stores the actual settings of the channel, volume, squelch, power level, INT/USA mode and scan time.
2 CIRCUIT DESCRIPTION 2.6.7 RT2047 DSC - PART II PA REGULATOR By means of the PA regulator it is possible to adjust the output power of the transmitter. When the output from U3/2-6 is changed from O to 5V, Q7-6 is turned off. Thus Q8-6 is turned on and then also Q2-6 and Q1-6 and the output voltage rises. When the voltage at the base of Q8-6 is equal to the voltage on the base of Q7-6 the current in Q8-6 is reduced and then also in Q2-6 and Q1-6 and the output voltage stabilises.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II 2.6.11 AF CIRCUITS The AF signal from the receiver is fed to the active filter U5/2-6. The filter provides a frequency response of -6 dB/Oct. in the range 0.3 to 3 KHz and limits the signals outside this range. Further the signal is fed to the telephone output amplifier U6/2-6 and Q6-6. From the telephone output the signal is fed through the VOLUME CONTROL circuit U6-6 and the AL POWER AMP.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II When the radio is switched on the dividing figure corresponding to the first figure in the selcall number is put on port A on the µC which is connected to the input of U18-6. If the correct tone is received the output of the comparator U15/1-6 goes low. This output is connected to the µC’s INT-pin. When the tone disappears again the µC will put out the dividing figure corresponding to the next figure in the selcall number.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II 2.6.14 COMMUNICATION BETWEEN THE TWO MICROCOMPUTERS The transmission of information between the 2 µC’s takes place on a serial bus similar to a RS232C serial interface. Each byte consists of 8 bits of information, a start-, a stop-, and a parity bit. Odd parity is being used and the transmission speed is 2400 Baud but only one byte will be transferred in each period of 10 mS. Transmission can only take place when the DTR (PD1) is high.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II COMPONENT LOCATION INTERFACE UNIT MODULE 6/600 View from component side with upper side tracks. View from component side with lower side tracks.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II DIAGRAM INTERFACE UNIT MODULE 6/600 This diagram is valid for PCB rev. 27746D.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II 2.7 KEYBOARD UNIT MODULE 7/700 2.7.1 DISPLAY The LCD-display is static driven with an 50 Hz AC signal measured with reference to the back plane input (BP pin numbers 1, 27, 28, 54). A segment that is off always has the same voltage as the BP. The latches (U1-7 - U6-7) is loaded serially from the µC. Every 10 mS a strobe pulse is sent to the latches, and the content of the internal shift register in the latches is loaded into the output latches.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II Q5-7, R18-7 and R19-7 is the Interrupt driver circuit and U10/2-7, Q4-7, C17-7, R14-7 - 16-7 and R22/ 1-7 - R22/4-7 forms the serial interface circuit. This circuit transforms the µC’s two-wire serial communication interface (SCI) into the one-wire SCI required for communication with external units. Data output from the µC can be detected on pin PD1 and data input on pin PD0. The one-wire asynchronized signal can be measured on R15-7 or P1/15-7. 2.7.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II COMPONENT LOCATION KEYBOARD UNIT MODULE 7/700 View from component side with upper side tracks. View from component side with lower side tracks.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II DIAGRAM KEYBOARD UNIT MODULE 7/700 This diagram is valid for PCB rev. 27747C.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II 2.8 DUPLEX FILTER MODULE 800 With a duplex filter, DF801, placed in the station it is possible to operate in full duplex mode with only one antenna installed. The duplex filter consists of 7 cavities, three in the Rx-section and four in the Tx-section. The cavities in the Tx-section are stagger tuned. Two cavities (D-E) are suppressing the noise in the receiving band 160.625 MHz - 162.025 MHz with Minimal insertion loss in the transmission band.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II 2.9 FILTER UNIT MODULE 9/900 The function of the Filter unit is to protect the set against RF interference from equipment installed near the set. The two options AUX II and SELCALL RELAY requires the relays RE1-9 and RE2-9. These relays are not a standard feature and can, if needed, be acquired from SP-Radio ( order number 21.300 ). The function of jumper P34-9 is described in part I, section 2.9 Special Options.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II COMPONENT LOCATION FILTER UNIT MODULE 9/900 View from component side with upper side tracks. View from component side with lower side tracks.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II DIAGRAM FILTER UNIT MODULE 9/900 This diagram is valid for PCB rev. 27749C.
9546
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II 32162 9546 PAGE 2-33
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II 2.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II 2.12 SPECIAL INSTALLATION WITH 2 MICROTELEPHONES H2086 for scrambler CRY2001, RT2047 DSC, RT2048 and RE2100. H2087 for VHF RT2047.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II 2.13 SPECIAL INSTALLATION WITH 3 MICROTELEPHONES H2088 for scrambler CRY2001, RT2047 DSC, RT2048 and RE2100. H2089 for VHF RT2047.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II 2.14 MECHANICAL DIMENSIONS FOR HANDSET MECHANICAL DIMENSIONS FOR HANDSET 81 43 80 64 275 65 151 ø4.5 80 43 ø4.5 32 32 27946 MECHANICAL DIMENSIONS FOR HANDSET HOLDER WITH MICROSWITCH 103 43 80 64 275 65 151 ø4.5 80 43 ø4.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II MECHANICAL DIMENSIONS FOR HANDSET 78 80 62 275 65 132 ø4.5 ø4.5 80 4-0-29938 32 32 MECHANICAL DIMENSIONS FOR HANDSET HOLDER WITH MICROSWITCH 103 43 80 64 275 65 151 ø4.5 80 43 ø4.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II 2.15 DC POWER SUPPLY N418 GENERAL DESCRIPTION The power supply N418 is constructed for supplying a 13.2V VHF from a 24V DC system. In order to obtain high efficiency regulation is obtained by the switch mode principle. TECHNICAL DATA: The power supply N418 is controlled from the connected VHF unit by on/off. Input voltage Output voltage Output current Operation temperature range Switch frequency 2.15.1 16-32V DC 13.2V DC Max.
2 CIRCUIT DESCRIPTION 2.15.3 RT2047 DSC - PART II ADJUSTMENT PROCEDURE ADJUSTMENT OF OUTPUT VOLTAGE. Measure the output voltage across C126 with a load equal to the consumption of a VHF unit in receive condition (0.5 - 0.8A). Adjust R105 until the output is 13.2V if necessary. ADJUSTMENT OF MAX. CURRENT. Check that the output voltage is still 13.2V with a load of 5.8A (2.3 ohm) across the output. Change the load to 1,5 ohm by connecting 4.3 ohm in parallel with the 2.3 ohm. The voltage will then be 10.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II DIAGRAM DC POWER SUPPLY N418 This diagram is valid for PCB rev. 23818C.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II 2.16 N420 24V/12V REGULATOR GENERAL DESCRIPTION The regulator N420 is a general purpose 24V DC to 13.2V DC regulator, e.g. to be used for supply of VHF radiotelephones. The regulator N420 is a serial regulator with excellent noise performance. 2.16.1 TECHNICAL DATA The regulator N420 is controlled from the connected VHF unit by the on/off button. ,QSXW 9ROWDJH 21.6 to 31.2V DC 2XWSXW 9ROWDJH 13.4V DC 2XWSXW &XUUHQW Max.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II In case of a short-circuit over the output R5 and D3 limits the current through IC1 and T4 to approx. 250 mA and R1 - R3 and D3 limits the current through T1 and T2 to approx. 15 Amp. The temperature of the cooling surface will increase and activate the thermal protection circuit inside IC1 and lower the output voltage, even though a short-circuit of the output should be avoided. The diode D1 protects against reverse input voltage.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II COMPONENT LOCATION 24V/12V REGULATOR N420 View from component side with upper side tracks. View from component side with lower side tracks.
2 CIRCUIT DESCRIPTION RT2047 DSC - PART II DIAGRAM 24V/12V REGULATOR N420 This diagram is valid for PCB rev. 24613F.
2 CIRCUIT DESCRIPTION DIMENSION AND DRILLING PLAN N420 RT2047 DSC - PART II PARTS LISTS N420 VOLTAGE REGULATOR N420 ECI A/S 5-0-24613G MANUFACTOR TYPE EB 00 FL 247 J MKT1818 MKT1818 EB 00 FL 247 J 2222 371 28104 MR750 BAT43 BZX79C7V5 1N4148-143 1N4148-143 171 100 8AF (DIN 41571/1) MC7812CT 1R0 10% TYPE 296-0 1R0 10% TYPE 296-0 1R0 10% TYPE 296-0 MBB 0207-00-BX-47R 5% 2322 195 13279 2322 181 53102 2322 181 53102 2322 181 53103 SMA 0207 S TK100-2K2 5% 6R8 10% TYPE 296-0 6R8 10% TYPE 296-0 6R8 10% TYPE
RT2047 DSC - PART II CONTENTS 9546 3 MECHANICAL DISASSEMBLING AND MODULE LOCATION 3-1 3.1 MECHANICAL DISASSEMBLING 3-1 3.
RT2047 DSC - PART II 3 MECHANICAL DISASSEMBLING AND MODULE LOCATION 3.
3 MECHANICAL DISASSEMBLING AND MODULE LOCATION PAGE 3-2 RT2047 DSC - PART II 9545
3 MECHANICAL DISASSEMBLING AND MODULE LOCATION U2 RX-SYNTHESIZER (200) FILTER UNIT (9/900) POWER CONNECTOR P802 MICROTELEPHONE CONNECTOR J803 3.
RT2047 DSC - PART II CONTENTS 9546 4 SERVICE 4-1 4.1 MAINTENANCE 4-1 4.2 ADJUSTMENT INSTRUCTIONS 4-1 4.3 PROPOSAL FOR NECESSARY MEASURING INSTRUMENTS 4-1 4.4 CALIBRATION OF THE TEST PROBE 4-2 4.5 PROCEDURE FOR CALIBRATION 4-2 4.6 ADJUSTMENT PROCEDURE 4-3 4.7 TROUBLE-SHOOTING 4-6 4.8 REPLACEMENT OF COMPONENTS 4-6 4.9 REPLACEMENT OF MODULES 4-6 4.10 NECESSARY ADJUSTMENTS AFTER REPLACEMENT OF A MODULE 4-7 4.11 PIN CONFIGURATION 4-9 4.
4 SERVICE 4 RT2047 DSC - PART II SERVICE 4.1 MAINTENANCE PREVENTIVE MAINTENANCE If RT2047 has been installed properly the maintenance can be reduced to an overhaul at each visit of our service staff. Inspect the set, the antenna, cables and plugs for mechanical damages, salt deposits, corrosion and any foreign materials. Due to its solid structure the RT2047 has a long lifetime, but due to the operating conditions it should be carefully controlled at maximum 12 month intervals.
4 SERVICE RT2047 DSC - PART II TEST PROBE 1nF ceramic AA119 RF AA119 1nF ceramic To multimeter LAYOUT OF THE PROBE 70.00 ø10 10.00 12.00 Metal tube Insulating material 25079 4.4 CALIBRATION OF THE TEST PROBE For some test probe measurements it is necessary to use a test probe calibrated with a specified multi meter. NECESSARY EQUIPMENT FOR THIS PROCEDURE: 1. Diagram for the measurements 2. Test probe 3. Multi meter 4. New factory adjusted RT2047 4.5 PROCEDURE FOR CALIBRATION 1. 2. 3. 4. 5. 6.
4 SERVICE RT2047 DSC - PART II 4.6 ADJUSTMENT PROCEDURE 4.6.1 ADJUSTMENTS OF INTERFACE UNIT MODULE 6/600 ADJUSTMENT AND CONTROL OF VOLTAGE REGULATORS. 1. Switch on the set. 2. Select channel 28. 3. Check 13.2V with a multi-meter on fuse F1-6 and P3-6 pin 9. 4. Check 5V +0.2V with a multi-meter on U1-6 pin 3. 5. Connect the multi-meter to Q9-6’s collector and adjust the 10V regulator with R65-6 to 10V +0.2V. 6. Connect the multi-meter to Q11-6’s collector and key the transmitter. 7.
4 SERVICE RT2047 DSC - PART II ADJUSTMENT OF TX-DRIVE LEVEL. 1. Remove coax cable from TX-PA and solder a 50 W resistor from TX to PA output to ground. 2. Connect test probe to TX to PA output. 3. Adjust coils L306 and L307 to Max deflection on the Tp meter and ensure that the levels on ch. 6 and ch. 28 are nearly the same. 4. Adjust R341 to the correct output: about 3.8V on the Tp meter. 5. Remove the 50 W resistor and solder the coax cable back to the output point. 4.6.
4 SERVICE RT2047 DSC - PART II ADJUSTMENT OF DETECTOR, TELEPHONE-AMPLIFIER, LF-POWER-AMPLIFIER AND THE AF FROM RX BUFFER 1. Select channel 6. 2. Connect the signal generator to the antenna connector J801. 3. Connect frequency counter between pin 3 of U101 and frame through a 10 uF capacitor. 4. Set signal generator level to -30 dBm (no modulation) 5. Adjust signal generator frequency until frequency counter shows 455.0 kHz ± 100 Hz. 6.
4 SERVICE RT2047 DSC - PART II 4.7 TROUBLE-SHOOTING Trouble-shooting should only be attempted by persons with a sufficient technical background, who have the necessary measuring instruments at their disposal, and who have carefully studied the operation principles and structure of RT2047. Commence by ascertaining whether the fault is somewhere in the antenna circuit, the power source, the handset or in the transmitter - receiver unit.
4 SERVICE RT2047 DSC - PART II 4.10 NECESSARY ADJUSTMENTS AFTER REPLACEMENT OF A MODULE 4.10.1 REPLACEMENT OF RECEIVER UNIT MODULE 100 1. 2. 3. 4. Adjustment of RF and IF amplifier, point 1 - 12. Alignment of detector, telephone-amplifier, LF-power-amplifier and the AF from Rx buffer, point 1 - 15. Adjustment and control of receiver sensitivity, point 1 - 7. Adjustment of Squelch, point 1 - 6. 4.10.2 REPLACEMENT OF RX-SYNTHESIZER MODULE 200 Normally the module is adjusted from the factory.
4 SERVICE PAGE 4-8 RT2047 DSC - PART II 9545
4 SERVICE RT2047 DSC - PART II 4.
4 SERVICE RT2047 DSC - PART II 4.
4 SERVICE NMC93C56N PIN ARRANGEMENT RT2047 DSC - PART II BLOCK DIAGRAM LM393N PIN ARRANGEMENT 9545 PAGE 4-11
4 SERVICE RT2047 DSC - PART II MC145146 4-BIT DATA BUS INPUT PLL FREQUENCY SYNTHESIZER PIN ARRANGEMENT BLOCK DIAGRAM MC3361 FM IF AMPLIFIER, LIMITER AND DETECTOR PIN ARRANGEMENT BLOCK DIAGRAM MC1458CP DUAL OPERATIONAL AMPLIFIER CONNECTION DIAGRAM PAGE 4-12 EQUIVALENT CIRCUIT SCHEMATIC 9545
4 SERVICE RT2047 DSC - PART II MC1413 HIGH-VOLTAGE, HIGH-CURRENT TRANSISTOR ARRAYS PIN CONNECTIONS SCHEMATIC DIAGRAM LM324 LOW POWER QUAD OPERATIONAL AMPLIFIERS CONNECTION DIAGRAM SCHEMATIC DIAGRAM (EACH AMPLIFIER) LF347 4 x JFET INPUT OP. AMP.
4 SERVICE RT2047 DSC - PART II LM393 LOW POWER LOW OFFSET VOLTAGE COMPARATORS CONNECTION DIAGRAM SCHEMATIC DIAGRAM LM358 LOW POWER DUAL OPERATIONAL AMPLIFIERS CONNECTION DIAGRAM (TOP VIEW) SCHEMATIC DIAGRAM (EACH AMPLIFIER) LM3046 TRANSISTOR ARRAYS SCHEMATIC AND CONNECTION DIAGRAM PAGE 4-14 9545
4 SERVICE 9545 RT2047 DSC - PART II SN74LS290 DECADE COUNTER SN74LS293 BINARY COUNTER FUNCTIONAL BLOCK DIAGRAM LS290 FUNCTIONAL BLOCK DIAGRAM LS293 SN74LS113AN DUAL J-K FLIP-FLOP SN74LS10N TRIPLE 3-INPUT NAND GATES PAGE 4-15
4 SERVICE RT2047 DSC - PART II MC14013B DUAL TYPE D FLIP-FLOP BLOCK DIAGRAM LOGIC DIAGRAM MC14094B 8-STAGE SHIFT/STORE REGISTER PIN ARRANGEMENT BLOCK DIAGRAM PAGE 4-16 9545
4 SERVICE RT2047 DSC - PART II MC14569B HIGH SPEED PROGRAMABLE DIVIDE-BY-N DUAL 4 BIT BCD/BINARY COUNTER PIN ARRANGEMENT BLOCK DIAGRAM MC14066B QUAD ANALOG SWITCH QUAD MULTIPLEXER BLOCK DIAGRAM CIRCUIT SCHEMATIC 9545 PAGE 4-17
4 SERVICE RT2047 DSC - PART II TDA2002 AF POWER AMP.
RT2047 DSC - PART II CONTENTS 5 9546 PARTS LISTS 5-1
RT2047 DSC - PART II 5 PARTS LIST MAIN CHASSIS RT2047/D POSITION DESCRIPTION -1/100 -2/200 -3/300 -4/400 -6/600 -7/700 -9/900 VARIOUS C801 C802 C803 C804 C805 C806 DF801 J801 J802 J803 LS801 P801 P802 R801 RECEIVER RX-SYNTHESISER TX-EXCITER TX-POWER AMPLIFIER INTERFACE UNIT KEYBOARD UNIT FILTER UNIT MICROTELEPHONE FOR CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC DUPLEX FILTER ANTENNA JACK (FEMALE) SUPPLY JACK (FEMALE) SOCKET SUB D 9 POLES
6 PARTSLIST RT2047 DSC - PART II POSITION DESCRIPTION C130 C131 C132 C133 C134 C135 C136 C137 C138 C139 C140 C141 C142 C143 C144 C145 D101 D102 D103 D104 FL101 FL102 U101 U102 L101 L102 L103 L104 L105 L106 L107 L108 L111 R101 R102 R103 R104 R105 R106 R107 R108 R109 R110 R111 R112 R113 R114 R115 R116 R117 R118 R119 R120 R121 R122 R123 R124 R125 R126 R127 R128 R129 Q101 Q102 Q103 Q104 X101 CAPACITOR CERAMIC CAPACITOR POLYSTERENE CAPACITOR MKT CAPACITOR MKT CAPACITOR POLYSTYRENE CAPACITOR MKT CAPACITOR MK
6 PARTSLIST POSITION DESCRIPTION RX-SYNTHESISER POSITION DESCRIPTION C201 C202 C203 C204 C205 C206 C207 C208 C209 C210 C211 C212 C213 C214 C215 C216 C217 C218 C219 C220 C221 C222 C223 C224 C225 C226 C227 C228 C229 C230 C231 C232 C233 C234 C235 C236 C237 C238 C239 C240 C241 C242 C243 C244 C245 C246 C247 D201 D202 D203 D204 IC201 IC202 L205 R201 R202 R203 R204 R205 R206 R207 R208 R209 R210 R211 R212 R213 R214 CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACI
6 PARTSLIST POSITION DESCRIPTION R215 R216 R217 R218 R219 R220 R221 R222 R223 R224 R225 R226 R227 R228 R229 R230 R231 R232 R233 R234 T201 T202 T203 T204 T205 T206 T207 T208 T209 T210 L201 L202 L203 L204 L206 L207 RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF TRANSISTOR RF TRANSISTOR JFET TRANSISTOR AF TRANSISTOR R
6 PARTSLIST POSITION DESCRIPTION C331 C332 C333 C334 C335 C336 C337 C338 C339 C340 C341 C342 C343 C344 C345 C346 C347 C348 C349 C350 C351 C352 C353 C354 C355 C356 D301 D302 D303 FP301 FP302 IC301 IC302 IC303 IC304 IC305 IC306 L301 L302 L303 L304 L305 L306 L307 L308 L309 L310 L311 R301 R302 R303 R304 R305 R306 R307 R308 R309 R310 R311 R312 R313 R314 R315 R316 R317 R318 R319 R320 R321 R322 R323 R324 R325 R326 CAPACITOR TRIMMING CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACITOR CERAMIC CAPACIT
6 PARTSLIST POSITION DESCRIPTION R327 R328 R329 R330 R331 R332 R333 R334 R335 R336 R337 R338 R339 R341 R342 R343 R344 R345 R346 R347 R348 R349 R350 R351 R352 R353 R354 R355 R356 R357 T301 T302 T303 T304 T305 T306 T307 T308 T309 T310 T311 T312 T313 T314 X3O1 RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF PRESET CERMET RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR
6 PARTSLIST POSITION DESCRIPTION C423 C424 C425 C426 C427 C428 C429 FP401 FP402 FP403 L401 L402 L403 L404 L405 L406 L407 L409 L410 L411 L412 L413 L414 L415 L416 L417 L419 L420 L421 R401 R402 R403 R404 R405 R406 T401 T402 T403 C501 C502 D501 RE501 CAPACITOR TRIMMING CAPACITOR CERAMIC PI-FILTER 2x1n5 + 0.5uH PI-FILTER 2x1n5 + 0.5uH PI-FILTER 2x1n5 + 0.5uH CAPACITOR CERAM.
6 PARTSLIST POSITION DESCRIPTION C25-6 C26-6 C27-6 C28-6 C29-6 C30-6 C31-6 C32-6 C33-6 C34-6 C35-6 C36-6 C37-6 C38-6 C39-6 C40-6 C41-6 C42-6 C43-6 C44-6 C45-6 C46-6 C47-6 C48-6 C52-6 C53-6 C54-6 C56-6 C57-6 C58-6 C59-6 C60-6 C61-6 C62-6 C63-6 C64-6 C65-6 C66-6 C67-6 C68-6 C69-6 C70-6 C71-6 C72-6 C73-6 C74-6 C75-6 C76-6 C77-6 C78-6 C79-6 D1-6 D2-6 D3-6 D4-6 D7-6 D8-6 D9-6 D10-6 D11-6 D12-6 D13-6 D14-6 D16-6 D17-6 D20-6 F1-6 P1-6 P2-6 P3-6 P4-6 P5-6 P6-6 P7-6 CAPACITOR MKT CAPACITOR POLYSTYRENE CAPACITOR E
6 PARTSLIST POSITION DESCRIPTION P8-6 Q1-6 Q2-6 Q3-6 Q4-6 Q5-6 Q6-6 Q7-6 Q8-6 Q9-6 Q10-6 Q11-6 Q12-6 Q13-6 Q14-6 Q15-6 Q16-6 Q18-6 Q19-6 R1-6 R3-6 R4-6 R5-6 R6-6 R7-6 R8-6 R9-6 R10-6 R11-6 R12-6 R13-6 R14-6 R15-6 R16-6 R17-6 R18-6 R19-6 R20-6 R21-6 R22-6 R23-6 R24-6 R25-6 R26-6 R27-6 R28-6 R29-6 R30-6 R31-6 R32-6 R33-6 R34-6 R35-6 R36-6 R37-6 R38-6 R39-6 R40-6 R41-6 R42-6 R43-6 R44-6 R45-6 R46-6 R47-6 R48-6 R49-6 R50-6 R51-6 R52-6 R53-6 R54-6 R55-6 R56-6 SIL SQUARE PINS TRANSISTOR TRANSISTOR TRANSISTOR T
6 PARTSLIST POSITION DESCRIPTION R57-6 R58-6 R59-6 R60-6 R61-6 R62-6 R63-6 R64-6 R65-6 R66-6 R67-6 R68-6 R69-6 R70-6 R71-6 R72-6 R73-6 R74-6 R75-6 R76-6 R77-6 R78-6 R79-6 R80-6 R81-6 R82-6 R83-6 R84-6 R85-6 R86-6 R87-6 R88-6 R89-6 R90-6 R92-6 R93-6 R94-6 R95-6 R96-6 R97-6 R99-6 R101-6 R102-6 R103-6 R104-6 R105-6 R106-6 R107-6 R108-6 R112-6 R113-6 R114-6 R119-6 R120-6 R121-6 R122-6 R123-6 R124-6 R125-6 R126-6 R127-6 R128-6 R129-6 R130-6 R131-6 R132-6 R133-6 R134-6 R135-6 R136-6 R137-6 R138-6 R139-6 R140-6
6 PARTSLIST POSITION DESCRIPTION R141-6 R143-6 R144-6 R145-6 R146-6 R147-6 R148-6 R150-6 R151-6 R152-6 R153-6 R154-6 R155-6 R156-6 R157-6 R158-6 R159-6 R160-6 R161-6 R162-6 RA1-6 RA2-6 RE3-6 U1-6 U2-6 U3-6 U4-6 U5-6 U6-6 U7-6 U8-6 U11-6 U12-6 U13-6 U14-6 U15-6 U16-6 U17-6 U18-6 U19-6 RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF
6 PARTSLIST POSITION DESCRIPTION P2-7 P3-7 P4-7 Q1-7 Q2-7 Q3-7 Q4-7 Q5-7 R1-7 R2-7 R3-7 R4-7 R5-7 R7-7 R8-7 R9-7 R10-7 R11-7 R12-7 R13-7 R14-7 R15-7 R16-7 R17-7 R18-7 R19-7 R20-7 R21-7 R22-7 R23-7 U1-7 U2-7 U3-7 U4-7 U5-7 U6-7 U7-7 U8-7 U9-7 U10-7 XR1-7 PLUG MT PLUG RIGHT ANGEL SIL SQUARE PINS TRANSISTOR TRANSISTOR AF TRANSISTOR AF TRANSISTOR AF TRANSISTOR AF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR MF RESISTOR RESIST
6 PARTSLIST 9810 POSITION DESCRIPTION P12-9 P13-9 P14-9 P15-9 P16-9 P17-9 P18-9 P19-9 P20-9 P21-9 P22-9 P23-9 P24-9 P25-9 P26-9 P27-9 P28-9 P29-9 P30-9 P31-9 P32-9 P33-9 P34-9 P35-9 RE1-9 RE2-9 SOLDER LUG SOLDER LUG SOLDER LUG SOLDER LUG SOLDER LUG SOLDER LUG SOLDER LUG SOLDER LUG SOLDER LUG SOLDER LUG SOLDER LUG SOLDER LUG SOLDER LUG SOLDER LUG SOLDER LUG SOLDER LUG SOLDER LUG SOLDER LUG SOLDER LUG SOLDER LUG SOLDER LUG SOLDER LUG SIL SQUARE PINS SOLDER LUG RELAY RELAY RT2047 DSC - PART II PCB VERSI
