PAMS Technical Documentation NSE–3 Series Transceivers Tuning Instructions Original 11/97
PAMS NSE–3 Tuning Instructions Technical Documentation CONTENTS Tuning Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Equipment Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAMS NSE–3 Technical Documentation Tuning Instructions Tuning Instructions General All tuning operations of the NSE–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 NSE–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 NSE–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 NSE–3 Tuning Instructions Technical Documentation Flash Concept for NSE–3 10. 13. 12. 11. 6. 9A. 4. 7. 9B. 8. 5. 1. 2. 3.
PAMS NSE–3 Tuning Instructions Technical Documentation Tuning With Covers Off – Using Test–frame JBS–19 8. 3. 4. 9. 6. 1. 7. 5. 2. 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 NSE–3 Tuning Instructions Technical Documentation Tuning With Covers Off – using Light Jig JBT–1 8. 3. 4. 1. 1. 7. 6. 5. 2.
PAMS NSE–3 Tuning Instructions Technical Documentation Warranty Transfer 1.
PAMS NSE–3 Tuning Instructions Technical Documentation 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 – Connect RF generator to antenna connector at 947.067710 MHz. – Adjust signal generator level to –55 dBm + cable attenuation. – Press OK button – Adjust signal generator level to –80 dBm + cable attenuation. – Press OK button.
PAMS NSE–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: – Select Tuning –> TX I/Q... – Select I/Q tuning values from PC’s memory, phone’s EEPROM or factory default values.
PAMS NSE–3 Tuning Instructions Technical Documentation – Use the ”Amplitude Difference” option. – Adjust the level of signal CHF+67.7 kHz (902.06777 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 NSE–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. Power levels programming: – Select Tuning –> TX Power... – Select I/Q tuning values from PC’s memory, phone’s EEPROM or factory default values. – Set power supply voltage 8.4 V to service battery (or 3.6 V to jig).
PAMS NSE–3 Tuning Instructions Technical Documentation 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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