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PAMS Technical Documentation NSE­3 Series Transceivers

Tuning Instructions

Original 11/97

NSE­3 Tuning Instructions

PAMS Technical Documentation

CONTENTS
Tuning Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Equipment Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Equipment Setup for Tuning a Phone without Removing Covers Flash Concept for NSE­3 . . . . . . . . . . . . . . . . . . . . . . . . . . . Tuning With Covers Off ­ Using Test­frame JBS­19 . . . . Tuning With Covers Off ­ using Light Jig JBT­1 . . . . . . . . Warranty Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tuning Steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1. RSSI Reference Signal Level Storage . . . . . . . . . . . . . . 2. AFC Diagram Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3. I/Q Modulator Amplitude Balance and Phase Shift Tuning 4. Tuning of Transmitter Power Levels . . . . . . . . . . . . . . . . 5. Charge Voltage Adjustment . . . . . . . . . . . . . . . . . . . . . . . 6. Battery Voltage Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 7. LCD Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 4 4 5 6 7 8 9 10 10 10 11 13 14 14 14

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NSE­3 Tuning Instructions

Tuning Instructions
General
All tuning operations of the NSE­3 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. The tuning values of the phone reside on the EEPROM. The contents of the EEPROM can be read by the service software and saved as a file. This is advisable when there is need to retain that information, e.g. in view of replacement of the circuit. The program also enables writing the default parameters on the EEPROM, in which case all tuning steps should be carried out. During tuning, proceed as follows: ­ Take care not to damage sensitive measuring instruments with excessive RF power. ­ Carry out all tuning steps in the shortest possible time to avoid excessive heating of RF units. ­ Perform all tuning steps in the order presented. ­ Never try to mask a fault by tuning it out!

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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. ­ GSM radio telephone test station or separate measuring equipment as follows: ­ RF generator ­ pulse power meter ­ spectrum analyzer ­ attenuator and branching unit

Equipment Setup
Caution: Make sure that you have switched off the PC and the printer before making connections ! Caution: Do not connect the PKD­1 key to the serial port. You may damage your PKD­1 !
Attach the protection key PKD­1 to parallel port one (25­pin female D­connector) of the PC. When connecting the PKD­1 to the parallel port be sure that you insert the PC end of the PKD­1 to the PC (male side). If you use a printer on parallel port one, place the PKD­1 between the PC and your printer cable. Next connect the M2BUS service cable, DAU­9P, to the serial port (RS­232) of the computer. Attach one end of the service cable to the PC serial port and the other end to the service box, JBA­4. For servicing the phone with the covers in place the service box should always be used. When the phone covers are removed the jigs should be used. For audio measurements connect the audio cable, ADS­1, as follows: ­ EAR line to AF INPUT of test equipment ­ MIC line to MOD GEN OUTPUT of test equipment

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NSE­3 Tuning Instructions

Equipment Setup for Tuning a Phone without Removing Covers

4.

1.

5.

2.

3. Item: 1 2 3 4 5 Service accessory: Service Battery BBD­3 DC Cable SCB­3 Service MBUS Cable DAU­9P Software protection key PKD­1 Service SW diskette 3.5" Product code: 0775071 0730114 0730109 0750018 0774080

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Flash Concept for NSE­3

10.

13. 12. 11. 6. 4. 9B. 5. 1. 2. 3. Item: 1 2 3 4 5 6 7 8 9A 9B 10 11 12 Service accessory: Flash Loading Adapter FLA­5 Flash Security Box TDF­4 Prommer FPS­4S Service Battery BBD­3 Service Cable SCH­5 DC Cable PCC­1B D15 ­ D15 Cable AXS­5 (Included in FLA­5 sales pack) Printer Cable (Included in FPS­4 sales pack) D9 ­ D9 Cable AXS­4 (Included in FPS­4 sales pack) D9 ­ D9 Cable AXS­4 Software protection key PKD­1 Service SW diskette 3.5" Travel Charger ACH­6E (Euro) Travel Charger ACH­6U (USA/Japan) Travel Charger ACH­6X (UK) AC Charger ACL­3E (Included in FPS­4 sales pack) Product code: 0080178 0770106 0085095 0775071 0730098 0730053 0730091 0730029 0730090 0730090 0750018 0774080 0270381 0270382 0270380 0680015 7. 8. 9A.

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NSE­3 Tuning Instructions

Tuning With Covers Off ­ Using Test­frame JBS­19

8. 3. 4.

9. 6. 1. 7. 5. 2.

Item: 1 2 3 4 5 6 7 8 9

Service accessory: Module Jig JBS­19 * Service Audio Box JBA­4 ** DC Cable PCS­1 External Antenna Cable XRC­1B Service Cable SCH­5 ** Service MBUS Cable DAU­9S ** Audio Cable ADS­1 Software Protection Key PKD­1 Service SW diskette 3.5"

Product code: 0770098 0770094 0730012 0730128 0730098 0730108 0730011 0750018 0774080

*) **)

The nominal operating voltage for JBS­19 is 3.6 V. The supply voltage for JBS­19 must never exceed 5.0 V SCH­5, JBA­4, and DAU­9S can be replaced with DAU­9P

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Tuning With Covers Off ­ using Light Jig JBT­1

8.

3. 4. 1.

1.

7. 6.

5. 2.

Item: 1 2 3 4 5 6 7 8 9

Service accessory: Light Module Jig JBT­1 * Service Audio Box JBA­4 ** DC Cable PCS­1 External Antenna Cable XRC­1B Service Cable SCH­5 ** Audio Cable ADS­1 Service MBUS Cable DAU­9S ** Software Protection Key PKD­1 Service SW diskette 3.5"

Product code: 0770109 0770094 0730012 0730128 0730098 0730011 0730108 0750018 0774080

*) **)

The nominal operating voltage for JBT­1 is 3.6 V. The supply voltage for JBT­1 must never exceed 5.0 V SCH­5, JBA­4, and DAU­9S can be replaced with DAU­9P Original 11/97

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NSE­3 Tuning Instructions

Warranty Transfer

1.

Item: 1

Service accessory: Warranty Cable SCH­6

Product code: 0730099

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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. Service software reports: A Table of AFC Parameters: AFC INIT Value AFC Slope PSW Slope A Table for AGC Calibration: AGC in 3 db steps 0...57 dB DAC and voltage reading for each gain value ­ Press SAVE button

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NSE­3 Tuning Instructions

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. ­ Connect spectrum analyzer (with attenuator if needed) to phone antenna connector. ­ Check that TX power level is level 10, channel is 60 and TX data type is 1. ­ Adjust spectrum analyzer centre frequency to 902 MHz, Span 200 kHz, Res BW 10 kHz, Video BW 1 kHz and Sweep time 0.5 s. ­67.71 kHz
D.C. offset tunings: Set this value to minimum

CHF

+67.71 kHz

> 30 dB

> 35 dB

Amplitude & phase difference: Set this value to minimum

­ Select the "TX I d.c. offset" option. ­ Adjust the level of centre frequency (CHF signal) to minimum by varying D/A converter value with <­ and ­> buttons. ­ The amplitude difference between CHF­67.7 kHz and CHF should be >30 dB. ­ Select option "TX Q d.c. offset". ­ Adjust the level of signal CHF to minimum by varying D/A converter value with <­ and ­> keys.

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­ 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 CHF­67 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.

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NSE­3 Tuning Instructions

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). ­ Connect pulse power meter or spectrum analyzer to antenna connector. ­ Check that channel is 60. ­ Adjust the power level (levels 5, 15 and 19) by clicking the + and ­ buttons, and change levels with and keys. Power level 5 15 19 Base Tuning POUT/dBm (CH 60) 32.5 13.0 7.0 ­20.0

Note: If the base calculation feature is enabled, then the base level is calculated automatically. ­ Press Calculate button to calculate all other levels. ­ Once all TX levels are correct, press SAVE button.

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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.Battery voltage checkbox Charger voltage ­­­­­­­­­­­­­­­ ­ Select 3.Charger voltage checkbox Battery size ­­­­­­­­­­­­ ­ Select 4.Battery size checkbox Battery temperature ­­­­­­­­­­­­­­­­­­­ ­ Select 5.Battery temperature checkbox Charge current ­­­­­­­­­­­­­­ ­ Select 6.Charge current ­ Select Save without confirmation, if you don't want confirm all the selected calibration values before saving ­ Run calibrations by pressing Run button ­ Set supply voltage back to 8.4 V

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