PAMS Technical Documentation NSB–1/3 Series Transceivers Tuning Instructions Original 06/98
PAMS NSB–1/3 Tuning Instructions Technical Documentation CONTENTS Tuning Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Equipment Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAMS NSB–1/3 Technical Documentation Tuning Instructions Tuning Instructions General All tuning operations of the NSB–1/3 are carried out using the service software. The service software turns the phone into the locals mode, in which the phone can be outwardly controlled via the MBUS interface. Tuning is based on the software communicating with the D/A and A/D converters of the phone. In some instances the phone processor will also calculate the required correction parameter.
PAMS NSB–1/3 Tuning Instructions Technical Documentation Required Equipment – PC/AT computer with service software; see separate section for instructions on installation and use. – Service accessories; see equipment setup pictures. – Multimeter or DVM.
PAMS NSB–1/3 Tuning Instructions Technical Documentation Equipment Setup for Tuning a Phone without Removing Covers 4. 5. 1. 2. 3. Item: Service accessory: Product code: 1 Service Battery BBD–3 0775071 2 DC Cable SCB–3 0730114 3 Service MBUS Cable DAU–9P 0730109 4 Software protection key PKD–1 0750018 5 Service SW diskette 3.
PAMS NSB–1/3 Tuning Instructions Technical Documentation Flash Concept for NSB–1/3 10. 13. 12. 11. 6. 9A. 4. 7. 9B. 8. 5. 1. 2. 3.
PAMS NSB–1/3 Tuning Instructions Technical Documentation Light Flash Concept for NSB–1/3 9. 11. 10. 7. 6. 8. 5. 3. 4. 1. 2. Item: Service accessory: Product code: 1 2 3 4 5 6 7 8 9 10 11 Flash Loading Adapter FLA–5 Flash Security Box TDF–4 Service Battery BBD–3 Service Cable SCH–5 DC Cable PCC–1 D9 – D9 Cable AXS–4 Light Flash Cable FLC–5 XCM–1 Software protection key PKD–1 Service SW diskette 3.
PAMS NSB–1/3 Tuning Instructions Technical Documentation Tuning With Covers Off – Using Test–frame JBS–19 8. 3. 4. 9. 6. 1. 7. 5. 2. Page 8 Item: Service accessory: Product code: 1 Module Jig JBS–19 * 0770098 2 Service Audio Box JBA–4 ** 0770094 3 DC Cable PCS–1 0730012 4 External Antenna Cable XRC–1B 0730128 5 Service Cable SCH–5 ** 0730098 6 Service MBUS Cable DAU–9S ** 0730108 7 Audio Cable ADS–1 0730011 8 Software Protection Key PKD–1 0750018 9 Service SW diskette 3.
PAMS NSB–1/3 Tuning Instructions Technical Documentation Tuning With Covers Off – using Light Jig JBT–1 8. 3. 4. 1. 1. 7. 6. 5. 2. Item: Service accessory: Product code: 1 Light Module Jig JBT–1 * 0770109 2 Service Audio Box JBA–4 ** 0770094 3 DC Cable PCS–1 0730012 4 External Antenna Cable XRC–1B 0730128 5 Service Cable SCH–5 ** 0730098 6 Audio Cable ADS–1 0730011 7 Service MBUS Cable DAU–9S ** 0730108 8 Software Protection Key PKD–1 0750018 9 Service SW diskette 3.
PAMS NSB–1/3 Tuning Instructions Technical Documentation Warranty Transfer 1.
PAMS NSB–1/3 Technical Documentation Tuning Instructions Tuning Steps 1. RX Calibration (AGC + AFC) Reference values for the received signal strength meter are program tuned. RSSI reference signal level programming: – Select Tuning –> RX Calibration – Check that the program asks you to use 1960.867710 MHz. If it doesn’t, change the continuous mode channel to 665 in RF Controls window. – Connect RF signal generator to the external antenna connector of the phone. – Adjust signal generator to 1960.
PAMS NSB–1/3 Tuning Instructions Technical Documentation 2. I/Q Modulator Amplitude Balance and Phase Shift Tuning The purpose of this tuning operation is to adjust the I/Q modulator d.c. offsets and the I/Q modulator amplitude balance and phase shift. I/Q modulator d.c. offsets, amplitude balance and phase shift tuning: – Connect spectrum analyzer (with an attenuator if needed) to the external antenna connector of the phone. – Select Tuning –> TX I/Q...
PAMS NSB–1/3 Technical Documentation Tuning Instructions – Use the ”Amplitude Difference” option. – Adjust the level of signal CHF+67.7 kHz (1880.06771 MHz) to minimum by varying D/A converter value with <– and –> keys. – The amplitude difference between CHF+67.7 kHz and CHF–67 kHz should be >35 dB. – Select the ”Phase Difference” option. – Adjust the level of signal CHF+67.7 kHz to minimum by varying D/A converter value with <– and –> keys. – When values are correct press SAVE button.
PAMS NSB–1/3 Tuning Instructions Technical Documentation 3. Tuning of Transmitter Power Levels This adjustment loads the power levels of the phone transmitter into the EEPROM. When doing this, a pulse power meter or spectrum analyzer must be used. – Adjust spectrum analyzer centre frequency to 1880 MHz, Span 0 Hz, Res BW 3 MHz, Video BW 3MHz, Sweep time <20ms and Marker peak. Power levels programming: – Set power supply voltage 8.4 V to service battery (or 3.6 V to jig).
PAMS NSB–1/3 Technical Documentation Tuning Instructions 4. Energy Management Calibration – Select Tuning –> Energy Management Calibration – Connect service battery to phone and dc cable between phone and service battery – Set supply voltage to 10.5 V – Run calibrations separately or all at once – Select calibrations: Battery & charger default values –––––––––––––––––––––––––––––––– – Select 1.Run Battery & charger default values checkbox Battery voltage ––––––––––––––– – Select 2.
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