PAMS Technical Documentation NSE–6 Series Transceivers Tuning Instructions Original 08/98
PAMS NSE–6 Tuning Instructions Technical Documentation CONTENTS Tuning Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Equipment Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Flash Concept for NSE–6 . . . . . . . . . . . . . . . . . . . . . . . . .
PAMS NSE–6 Technical Documentation Tuning Instructions Tuning Instructions General All tuning operations of the NSE–6 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–6 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–6 Tuning Instructions Technical Documentation Flash Concept for NSE–6 12. 15. 14. 13. 7. 10. 4. 6. 1. 9. 11. 8. 5. 2. 3.
PAMS NSE–6 Tuning Instructions Technical Documentation Tuning with Test–frame MJS–6 3. 7. 9. 1. 5. 8. 6. 4. 2.
PAMS NSE–6 Tuning Instructions Technical Documentation Testing With Covers On – using Service Box JBU–5 8. 4. 10. 9. 7. 1. 3. 6. 5. 2.
PAMS NSE–6 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 service jig 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–6 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–6 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–6 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 5.0 V to module jig (MJS–6).
PAMS NSE–6 Tuning Instructions Technical Documentation 4. Energy Management Calibration – Select Tuning –> Energy Management Calibration – Connect the phone to the service junction box and dc cable SCB–3 between the phone and the service junction box. – Set the switch of the service junction box to the position FLA–5. – Connect 10.5V to the service junction box (cable PCS–1) from the power supply or from the Flash adapter (FLA–5) – Run calibrations separately or all at once.
