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Nokia Customer Care

7 - RF Description and Troubleshooting

Company Confidential

RH-47

Issue 1 05/04

2004 Nokia Corporation

Page 21

Company Confidential

Select

Band

GSM850 or GSM1900

Active unit

Operation mode

Continuous

RX/TX Channel

190 or 661

Please refer to the fault-finding chart and Appendix C for proper levels at different test
points.

Measuring analogue RX I/Q signals using oscilloscope

Measuring with an oscilloscope on “RXIINN” or “RXQINN” is recommended only if RSSI
reading does not provide enough information. There are dedicated test points for RX I
and Q signals. Apply an Input signal level of -80dBm.

1 Start Phoenix Service Software and open FBUS connection:

Select

Scan Product

Ctrl-R

Wait until phone information is shown in the lower right corner of the screen.

2 Set operating mode to local mode:

Select

Maintenance

Alt-M

Testing

RF Controls

Wait until the RF Controls window is pops up.

3 In the RF Controls window:

Select

Band

GSM850 or GSM1900

Active unit

Operation mode

Continuous

RX/TX Channel

190 or 661

AGC

Following picture should be displayed on an oscilloscope' s screen if the GSM850

Содержание RH-47 Series

Страница 3: ...evels using spectrum analyzer 20 Measuring analogue RX I Q signals using oscilloscope 21 Receiver troubleshooting 22 Rx signal paths 23 Antenna switch RX TX Switch 24 RX front end 24 RX paths of Mjoelner RF ASIC 25 Transmitter 26 General instructions for TX troubleshooting 26 TX signal paths 26 Antenna switch TX RX switch 28 GSM850 transmitter 28 General instructions for GSM850 TX troubleshooting ...

Страница 4: ...c idea 65 Calibration procedure setup MJ 21 65 Data acquisition MJ 21 66 MJ 21 TX power measurement 67 MJ 21 GSM850 power measurement 67 MJ 21 GSM1900 power measurement 68 MJ 21 receiver RSSI measurement 68 MJ 21 RSSI procedure 68 MJ 21 RSSI values 69 MJ 21 example figures 70 JXS 2 DA 17 blackbox setup 70 Data acquisition JXS 2 DA 17 70 DA 17 JXS 2 example figures 71 Setting cable loss for Auto Tu...

Страница 5: ...Abbreviations BB Baseband PCS GSM1900 GSM GSM850 ESD Electro Static Discharge GPRS General Packed Radio Service HSCSD High Speed Circuit Switched Data LNA Low Noise Amplifier LO Local Oscillator PA Power Amplifier PWB Printed Wired Board PLL Phase Locked Loop RF Radio Frequency RX Receiver SA Spectrum Analyzer TX Transmitter VCO Voltage Controlled Oscillator ...

Страница 6: ...ne step directly between RF frequency and base band All up and down conversion takes place in the RF ASIC named Mjoelner N601 Mjoelner RF ASIC also contains PLL and LNAs for all used bands ADC control section is included to power and or control GSM850 TX buffer detector and antenna switch The Mjoelner RF ASIC is controlled via a serial bus Mjoelner RF ASIC contains an integrated VCXO which uses an...

Страница 7: ...Confidential RH 47 Issue 1 05 04 Copyright 2004 Nokia Corporation Page 7 Company Confidential Figure 1 RF frequency scheme 3296 3980 MHz 26 MHz PLL X tal 1850 1910 MHz 824 849 MHz 869 894 MHz 1930 1990 MHz 26 MHz BB clk I Q Q I RX TX Mjoelner F F 2 F F 4 F F F 4 F 2 ...

Страница 8: ...RH 47 Company Confidential 7 RF Description and Troubleshooting Nokia Customer Care Page 8 Copyright 2004 Nokia Corporation Issue 1 05 04 Company Confidential Figure 2 RF block diagram ...

Страница 9: ... RF power supply configuration All power supplies for the RF Unit are generated in the UEM IC D190 All RF supplies can be checked either in Mjoelner or in BB chamber The power supply configuration used is shown in the block diagram below Values of voltages are given as nominal outputs of UEM Currents are typical values Figure 3 RF power distribution diagram ...

Страница 10: ...850 869 894 MHz GSM1900 1930 1990 MHz TX Frequency Band GSM850 824 849 MHz GSM1900 1850 1910 MHz Output Power GSM850 5 33 dBm 3 2 mW 2 W GSM1900 0 30 dBm 1 0 mW 1 W Duplex Spacing GSM850 45 MHz GSM1900 80 MHz Number of RF Channels GSM850 124 GSM1900 299 Channel Spacing 200 kHz each band Number of TX Power Levels GSM850 15 GSM1900 16 Sensitivity static channel GSM850 102 dBm GSM1900 102 dBm Frequen...

Страница 11: ...s connected to the antenna port using the repair jig MJ 21 Always make sure that the measurement set up is calibrated when measuring RF param eters at the antenna port Remember to include the correct losses of the module repair jig and the connecting cable when realigning the phone Most RF semiconductors are static discharge sensitive ESD protection must be taken into account during repair ground ...

Страница 12: ...RF key component placement Figure 4 RF key component placement Description Part Code Manufacturer s code NMP Code Supplier Dual band PA N801 PF08130B TB 4350403 Renesas Mjölner RF ASIC F7 N601 4380013 Infineon BT202i N430 0700085 Murata UHF VCO G701 ENFVJSW2S08 4350431 Matsushita UHF VCO Balun T702 LDB213G6010C 001 4550187 Murata 1900 Tx Balun T701 LDB211G8005C 001 4550191 Murata ...

Страница 13: ...d can be measured either in the Mjoelner chamber or in the base band chamber On the drawing below small circles show the locations of the test points 1900 Rx SAW Z603 4511325 Murata 850 Tx SAW Z701 4511317 Murata 850 Rx SAW Z604 4511323 Murata Antenna switch Z601 LMZ0170 4510449 Murata Crystal B601 TSX 8A 25850 4510337 Toyocom Tx Coupler L801 LDC21836M19D 185 4550197 Murata Tx850 buffer V802 BFR94...

Страница 14: ...RH 47 Company Confidential 7 RF Description and Troubleshooting Nokia Customer Care Page 14 Copyright 2004 Nokia Corporation Issue 1 05 04 Company Confidential Test points RF supply voltages ...

Страница 15: ...stomer Care 7 RF Description and Troubleshooting Company Confidential RH 47 Issue 1 05 04 Copyright 2004 Nokia Corporation Page 15 Company Confidential RF test points Mjoelner chamber RF test points VCO chamber ...

Страница 16: ...n and Troubleshooting Nokia Customer Care Page 16 Copyright 2004 Nokia Corporation Issue 1 05 04 Company Confidential RF test points PA chamber Test points BB area J203 TXQD J201 RXQD J202 TXID J200 RXID J203 TXQD J201 RXQD J202 TXID J200 RXID ...

Страница 17: ...power supply DC voltage of 3 6V and an RF signal generator Measuring RX I Q signals using RSSI reading 1 Start Phoenix Service Software and open FBUS connection Select Scan Product Ctrl R Wait until phone information is shown in the lower right corner of the screen 2 Set operating mode to local mode Select Maintenance Alt M Testing T RF Controls F Wait until the RF Controls window pops up 3 In the...

Страница 18: ...set GSM1900 1960 06771 MHz channel 661 67 710kHz off set RF power level 80dBm the antenna connector of the phone remembering to compen sate for the cable and jig attenuation 5 In RSSI reading click Read now The resulting RSSI level should be 80dBm 0 5dB in each band Measuring RX performance using SNR measurement 1 Start Phoenix Service Software and open FBUS connection Select Scan Product Ctrl R W...

Страница 19: ...ontrols window pops up 3 In the RF Controls window Select Band GSM850 or GSM1900 Active unit RX Operation mode Burst RX TX Channel 190 or 661 Select Maintenance Alt M Testing T SNR Measurement M Select Both Radio Button The setup should now look like this 4 Press the Start button 5 To continue follow the instructions in the following pop up windows 6 Connect an external signal generator to the RF ...

Страница 20: ...es should be GSM850 20dB GSM1900 18dB Measuring front end power levels using spectrum analyzer Spectrum Analyzer SA level values depend on the probe type and should be validated using a good sample The levels that are given here are measured using an hp 85024A probe 1 Start Phoenix Service Software and open FBUS connection Select Scan Product Ctrl R Wait until phone information is shown in the low...

Страница 21: ...recommended only if RSSI reading does not provide enough information There are dedicated test points for RX I and Q signals Apply an Input signal level of 80dBm 1 Start Phoenix Service Software and open FBUS connection Select Scan Product Ctrl R Wait until phone information is shown in the lower right corner of the screen 2 Set operating mode to local mode Select Maintenance Alt M Testing T RF Con...

Страница 22: ...asure those signals by means of RSSI reading It is assumed that correct cali bration of RSSI reading has been carried out in production RSSIreading dBm 20log UBB AGCcalibrated Therefore do not calibrate a defective phone before the phone error has been found When a defective phone has been calibrated a possible error in RX front end might be masked In that case one can get a reasonable RSSI readin...

Страница 23: ...ands o k Apply 92dBm signal from Generator to Antenna Connector phone local burst mode RSSI and SNR wrong in both bands No Change signal level to 60dBm phone local continous mode SA Z601 EGSMout 76dBm Yes No SA Z601 Rx output 850 1900 67dBm SA Z601 EGSMout 76dBm Yes No SA Z604 Z603 SAWout both lines 72dBm Change Z604 Z603 Check RxTx Switch Change Z601 Yes SA Z601 EGSMout 76dBm No Osci RF BB serial...

Страница 24: ...tenna switch Æ GSM1900 SAW filter Z603 The antenna switch including routed lines has following typical insertion losses GSM850 1 3dB GSM1900 1 6dB RX front end The RX front end includes two SAW filters for GSM850 Z604 and GSM1900 Z603 They are matched to the corresponding LNA inputs of Mjoelner RF ASIC N601 with dif ferential matching circuits LC type The SAW filters provide out of band blocking i...

Страница 25: ...50 and one for GSM1900 Two passive I Q mixers MIX one for GSM850 and one for GSM1900 The BB signal paths consist of Baseband amplifiers BBAMP1 These amplifiers implement the initial channel filtering Low pass filters LPF1 DC compensation AGC amplifiers DCN1 These amplifiers implement gain steps from 0dB to 24dB in 6dB steps Attenuators AGC They implement gain steps from 48dB to 0dB in 6dB steps yi...

Страница 26: ...trum analyzer or a power meter Assure not to overload or destroy the equipment Connect the phone to a PC with DAU 9S cable RS232 and Phoenix dongle PKD 1CS Provide the phone with power supply 3 6V Start Phoenix Service Software and open FBUS connection Select Scan Product Ctrl R and wait until phone information is shown in the lower right corner of the screen Follow the instructions in the chapter...

Страница 27: ..._DET VANTL VANTH TX C TX P VTXLOL TX IP TX IM TX Q P TX Q M 2 2 PLFB1 PLFB2 VPCH VPCL 2 VT X TXC TXP V D DT X Supply filter VR2 VTXBH VTXBL VTXLOH DET PA Dir Coupler VBATTRF PCN PCS GSM850 PW loop filter SAW VTX Buffer Balun 3 1 2 1 4 Open collector Open collector PWC RF Controls RF Controls 2 2 2 2 VDDDIG VDDRXBB An t S wit ch GSM TX PCS TX Mjølner OUTHP OUTHM OUTLP OUTLM DET VB_DET TX C TX P VTX...

Страница 28: ... table shows the possible different states Table 1 Logic table for the antenna switching states GSM850 transmitter General instructions for GSM850 TX troubleshooting Start the preparations as described in chapter General instructions for TX troubleshoot ing General instructions for TX troubleshooting 1 Set operating mode to local mode Select Maintenance Testing RF Controls Wait until the RF Contro...

Страница 29: ... measurement equipment should detect the following output signal of the phone Pout 23 1dBm 836 6 MHz If this is not the case then go to the next chapter for troubleshooting Troubleshooting for GSM850 transmitter In the following troubleshooting chart the TXP signal is used as a trigger signal For this purpose a TXP test point is provided on the PWB refer to figure RF test points in the Mjoelner ch...

Страница 30: ...Vdc 1 1 V R716 TXQOUTN 67kHz Vac 0 4 Vpp Vdc 1 1 V Yes Oscilloscope R823 VTXB_850 Vdc 2 78 Volt No Check C641 NF VC1 Vdc 0 Volt Mjoelner Serial Interface C640 NF VC2 Vdc 2 78 Volt Mjoelner C803 VBD Vdc 2 78 Volt Yes Spectrum Analyzer No Check R828 PA input PA Input GSM850 P 5 dBm 836 6 MHz with hp 85024A GSM TX SAW Filter V802 Buffer Compare with good sample Mjoelner Yes Synthesizer Use Phoenix to...

Страница 31: ...hoot ing General instructions for TX troubleshooting 1 Set operating mode to local mode Select Maintenance Testing RF Controls Wait until the RF Controls window pops up 2 In the RF Controls window Select Band GSM 1900 Active unit TX Operation mode Burst RX TX Channel 661 TX Power Level 5 TX Data Type Random The setup should now look like this Now the measurement equipment should detect the followi...

Страница 32: ...Copyright 2004 Nokia Corporation Issue 1 05 04 Company Confidential Troubleshooting for GSM1900 transmitter In the following troubleshooting chart the TXP signal is used as a trigger signal For this purpose a TXP test point is provided on the PWB refer to RF test points in the Mjoelner chamber ...

Страница 33: ...1 V Base Band R716 TXQOUTP 67kHz Vac 0 4 Vpp Vdc 1 1 V R716 TXQOUTN 67kHz Vac 0 4 Vpp Vdc 1 1 V Yes Oscilloscope No Check C641 NF VC1 Vdc 2 78 Volt Mjoelner Serial Interface C649 NF VC2 Vdc 2 78 Volt Mjoelner C803 VDET Vdc 2 78 Volt Yes Spectrum analyzer No Check R819 in TX_1900 P 0 dBm 1880 MHz DCS PCS Balun T701 Mjoelner Yes Synthesizer Use Phoenix to select TX_Data Type Random TX Power Level 5 ...

Страница 34: ...any Confidential 7 RF Description and Troubleshooting Nokia Customer Care Page 34 Copyright 2004 Nokia Corporation Issue 1 05 04 Company Confidential Figure 7 Example for TXP and TXC signal waveform PCS1900 PL19 ...

Страница 35: ...C with DAU 9S cable RS232 The PC must have Phoenix Ser vice Software installed and a PKD 1CS dongle is required Follow the instructions in the chapters below Checking synthesizer operation 1 Start Phoenix Service Software and open FBUS connection Select Scan Product Ctrl R Wait until phone information is shown in the lower right corner of the screen 2 Set operating mode to local mode 3 Start RF Co...

Страница 36: ...hen go to chapter Troubleshooting for PLL synthesizer 26 MHz reference oscillator VCXO The VCXO is integrated in the Mjoelner RF ASIC N601 The only external component is the 26MHz crystal B601 The reference oscillator has two functions Reference frequency for the PLL synthesizer System clock for BB RFClk 26 MHz For an error free initial synchronization the 26MHz frequency of the VCXO must be accur...

Страница 37: ...e frequencies in the GSM850 and the GSM1900 bands both RX and TX The output frequency of the VCO is controlled by a DC voltage VC of the PLL loop filter The valid range of VC is 0 7V 3 8V when the PLL is in steady state The typical tuning sensitivity is 240MHz V Even if the PLL is not working properly VC outside the valid range a frequency at the output of the VCO can be detected between 3GHz and ...

Страница 38: ...RH 47 Company Confidential 7 RF Description and Troubleshooting Nokia Customer Care Page 38 Copyright 2004 Nokia Corporation Issue 1 05 04 Company Confidential Figure 8 PLL block diagram ...

Страница 39: ... 829 6 874 6 3318 4 3498 4 217 842 887 3368 3548 156 829 8 874 8 3319 2 3499 2 218 842 2 887 2 3368 8 3548 8 157 830 875 3320 3500 219 842 4 887 4 3369 6 3549 6 158 830 2 875 2 3320 8 3500 8 220 842 6 887 6 3370 4 3550 4 159 830 4 875 4 3321 6 3501 6 221 842 8 887 8 3371 2 3551 2 160 830 6 875 6 3322 4 3502 4 222 843 888 3372 3552 161 830 8 875 8 3323 2 3503 2 223 843 2 888 2 3372 8 3552 8 162 831...

Страница 40: ... 0 630 1873 8 1953 8 3747 6 3907 6 724 1892 6 1972 6 3785 2 3945 2 537 1855 2 1935 2 3710 4 3870 4 631 1874 0 1954 0 3748 0 3908 0 725 1892 8 1972 8 3785 6 3945 6 538 1855 4 1935 4 3710 8 3870 8 632 1874 2 1954 2 3748 4 3908 4 726 1893 0 1973 0 3786 0 3946 0 539 1855 6 1935 6 3711 2 3871 2 633 1874 4 1954 4 3748 8 3908 8 727 1893 2 1973 2 3786 4 3946 4 540 1855 8 1935 8 3711 6 3871 6 634 1874 6 19...

Страница 41: ...1945 0 3730 0 3890 0 680 1883 8 1963 8 3767 6 3927 6 774 1902 6 1982 6 3805 2 3965 2 587 1865 2 1945 2 3730 4 3890 4 681 1884 0 1964 0 3768 0 3928 0 775 1902 8 1982 8 3805 6 3965 6 588 1865 4 1945 4 3730 8 3890 8 682 1884 2 1964 2 3768 4 3928 4 776 1903 0 1983 0 3806 0 3966 0 589 1865 6 1945 6 3731 2 3891 2 683 1884 4 1964 4 3768 8 3928 8 777 1903 2 1983 2 3806 4 3966 4 590 1865 8 1945 8 3731 6 38...

Страница 42: ... Nokia Corporation Issue 1 05 04 Company Confidential DC Supply Current Check For a quick check of DC power supplies refer to the diagram below Voltage drops are measured at the respective resistors pads Note that not all currents can be checked in such a way see the marking na not applicable in the diagram ...

Страница 43: ...hen component replacements around the modulator area RF path from UEM via RF ASIC to RF PA have been done TX IQ Tuning is additionally required In RX general repairs front end always require RX Calibration and Rx Band Filter Calibration for all three bands Repairs in the PLL circuit always require RX Calibration of the low band If the RF ASIC is replaced all calibrations mentioned above have to be...

Страница 44: ..._Phone_After_Flash Action 7 Check_Start_Phone_Result 0 4 Num 8 Measure_Local_Mode_Curr ent 40 100 mA 9 Read_BSI_ADC_Value 0 50 ADC 10 Write_Production_Info Action 11 Read_PCI_Version 0 5 ADC 12 Write_Product_Profile Action 13 Seq_Calibrate_A DC Calibrate_ADC Action 14 Check_VBATGScalV 10000 11000 ADC 15 Check_VBATOffScal 2400 2600 ADC 16 Check_BSICalGain 860 1180 ADC 17 Check_BTEMPValue 200 450 AD...

Страница 45: ...th up to RXIQ inter face If RXIQ not ok check N601 If RXIQ ok check BB 35 Check_VCXO_Value 128 767 ADC x 36 Check_AFC_Value 3062 3262 ADC x VCXO AFC calibration can only be done when GSM850 RX Tuning was successful 37 Check_AFC_Coeff_0 1500 3500 ADC x If calibration fails at all check RFBUS Sig nals to N601 38 Check_AFC_Coeff_1 700 300 ADC x Check voltage supplies VDDXO C607 2 7V VDDBBB C628 1 8V ...

Страница 46: ..._Filter_ N1 3 1 dB x 56 Check_GSM850_Rx_Filter_ N2 3 1 dB x 57 Check_GSM850_Rx_Filter_ N3 3 1 dB x 58 Check_GSM850_Rx_Filter_ N4 2 1 dB x 59 Check_GSM850_Rx_Filter_ N5 3 1 dB x 60 Check_GSM850_Rx_Filter_ N6 3 1 dB x 61 Check_GSM850_Rx_Filter_ N7 3 1 dB x 62 Check_GSM850_Rx_Filter_ N8 6 2 dB x 63 Seq_Calibrate_G SM1900_Rx_Filte r Calibrate_GSM1900_Rx_Filt er Action x If one of the steps 64 72 fails...

Страница 47: ...x Buffer circuit 80 Measure_GSM850_Tuning_ Samples Action x PA circuit 81 Tune_GSM850_Tx_Power Action x Power control loop and Antenna switch 82 Check_GSM850_Tx_Coeff5 0 5 0 7 ADC x 83 Seq_Measure_GS M850_Tx_Levels Measure_GSM850_MID_Ch _Levels Action x 84 Check_GSM850_MID_Ch_T x_Lev5 31 5 33 dBm x 98 Check_GSM850_MID_Ch_T x_Lev19 2 8 dBm x 99 Seq_Tune_GSM1 900_Tx_Power Set_SA_GSM1900_Base_lev el_...

Страница 48: ...set 6 6 mV x 125 Tune_GSM850_Q_DC_Offse t 6 6 mV x Check TXIQ Signals with oscilloscope TXIOUTP TXIOUTN TXQOUTP TXQOUTN 126 Tune_GSM850_I_DC_Offset _2 6 6 mV x 127 Tune_GSM850_Q_DC_Offse t_2 6 6 mV x Check TX850 SAW fil ter Z604 and Buffer Transistor V802 128 Tune_GSM850_IQ_Phase_Di fference 70 110 deg x 129 Tune_GSM850_IQ_Amplitu de_Difference 1 2 1 2 mV x Maybe Mjölner N601 must be replaced 130 ...

Страница 49: ... Tune_GSM1900_Q_DC_Offs et_2 6 6 mV x Check TX Balun T701 139 Tune_GSM1900_IQ_Phase_ Difference 70 110 deg x 140 Tune_GSM1900_IQ_Amplit ude_Difference 1 2 1 2 mV x Maybe Mjölner N601 must be replaced 141 Tune_GSM1900_IQ_Phase_ Difference_2 70 110 deg x 142 Measure_GSM1900_TX_IQ Action x 143 Check_GSM1900_TX_IQ_f0 120 35 dBc x 144 Check_GSM1900_TX_IQ_f0 _ 67710 120 40 dBc x 145 MainSequence MMC_tes...

Страница 50: ...l 2 Keypad_Start_Tes t 0 10 3 Calibration Ini tialize PassFailTest 4 Check Battery Voltage 0 1023 ADC 5 Testmode Current Meas 35 150 mA 6 Set Voltage 3V6 0 10 7 Initialize Keithley 2015 PassFailTest 8 Charge Volt Curr 0 6 0 1 A 9 Charge Volts ADC 57000 63000 ADC 10 Charge Current ADC 3600 5000 ADC 11 Check Headset Detect 17 17 12 Check Sim Card Inserted PassFailTest 13 Meas Vibra Cur rent 45 120 m...

Страница 51: ...FF test 1 1 26 Vision Start PAT TERN M test Action 27 Vision Check PATTERN M test 1 1 28 Vision Start LCD_OFF Action 29 Vision Check LCD_OFF 1 1 30 Stop Vision test in phone Action 31 BlueTooth BER Test 0 1 0 1 32 Initialize PCI PassFailTest 33 PrePare Call for GSM850 Action X 34 SetFast ServeChannel GSM850 PassFailTest X 35 WaitForService MS GSM850 0 40 sec X 36 MS Originated Call Test GSM850 Pas...

Страница 52: ... TxL 5 70 6 dB X 45 GSM850 BURST t 12 C H TxL 5 90 30 dB X 46 GSM850 FREQ ERR PEAK C H TxL 5 90 90 Hz X Check shielding and antenna con nection 47 GSM850 PHASE ERR RMS C H TxL 5 0 5 deg X Check the follow ing capacitors for correct soldering 48 GSM850 PHASE ERR PEAK C H TxL 5 0 20 deg X C610 C740 C741 C626 C710 C711 C712 49 GSM850 Ramp ing Spectra 400Khz C H TxL 5 90 19 dBm X 50 GSM850 Ramp ing Sp...

Страница 53: ...ne arity C H TxL 5 6 0 5 3 5 dBm X 59 Handoff to GSM850 C H TxL 19 0 5 sec X 60 Meas GSM850 All C H TxL 19 0 1000 sec X 61 GSM850 POWER BURST C H TxL 19 2 8 dBm X 62 GSM850 BURST t 1 C H TxL 19 110 25 dB X 63 GSM850 BURST t 2 C H TxL 19 70 1 dB X 64 GSM850 BURST t 4 C H TxL 19 1 1 dB X 65 GSM850 BURST t 9 C H TxL 19 1 1 dB X 66 GSM850 BURST t 11 C H TxL 19 70 1 dB X 67 GSM850 BURST t 12 C H TxL 19...

Страница 54: ...ra 400Khz C L TxL 5 100 60 dBc X Check Buffer Cir cuit around V802 76 GSM850 Mod Spectra 400Khz C L TxL 5 100 60 dBc X 77 GSM850 Mid Handoff to GSM850 C M TxL 5 0 5 sec X 78 Meas GSM850 All C M TxL 5 0 1000 sec X 79 GSM850 POWER BURST C M TxL 5 31 35 dBm Check shielding and antenna con nection 80 GSM850 PHASE ERR RMS C M TxL 5 0 5 deg X Check the follow ing capacitors for correct soldering 81 GSM8...

Страница 55: ...L 0 1 1 dB X 92 PCS1900 BURST t 9 C H TxL 0 1 1 dB X 93 PCS1900 BURST t 11 C H TxL 0 70 6 dB X 94 PCS1900 BURST t 12 C H TxL 0 90 30 dB X 95 PCS1900 FREQ ERR PEAK C H TxL 0 180 180 Hz X Check shielding and antenna con nection 96 PCS1900 PHASE ERR RMS C H TxL 0 0 5 deg X Check the follow ing capacitors for correct soldering 97 PCS1900 PHASE ERR PEAK C H TxL 0 0 20 deg X C610 C740 C741 C626 C710 C71...

Страница 56: ... C H TxL 1 0 1000 sec X 106 PCS1900 POWER BURST C H TxL 1 26 30 dBm X 107 PCS1900 Tx Line arity C H TxL 0 1 0 5 3 5 dBm X 108 Handoff to PCS1900 C H TxL 15 0 5 sec X 109 Meas PCS1900 All C H TxL 15 0 1000 sec X 110 PCS1900 POWER BURST C H TxL 15 3 3 dBm X Burst template failure Check Detector Diode V801 and Loop 111 PCS1900 BURST t 1 C H TxL 15 110 23 dB X components C804 R802 C805 R801 C803 112 P...

Страница 57: ...TxL 5 90 22 dBm X C610 C740 C741 C626 C710 C711 C712 123 PCS1900 Ramp ing Spectra 400Khz C L TxL 5 90 22 dBm X 124 PCS1900 Mod Spectra 400Khz C L TxL 5 0 15 dB X Check C715 and C716 for correct soldering 125 PCS1900 Mod Spectra 400Khz C L TxL 5 0 15 dB X Check TX1900 MHZ path T701 and surrounding components 126 PCS1900 Mid Handoff to PCS1900 C M TxL 0 0 5 sec X 127 Meas PCS1900 All C M TxL 0 0 100...

Страница 58: ... 400Khz C M TxL 5 90 22 dBm X 133 PCS1900 Mod Spectra 400Khz C M TxL 5 0 15 dB X Check C715 and C716 for correct soldering 134 PCS1900 Mod Spectra 400Khz C M TxL 5 0 15 dB X Check TX1900 MHZ path T701 and surrounding components 135 MainSequence EndCall Action X 136 Meas Vibra Sen sor SNR_3 16 50 dB S NR 137 SelfTest C 0 0 138 Sleep Mode Cur rent 0 1 3 5 mA 139 Off Mode Current 0 2 0 2 mA ...

Страница 59: ...nfidential RH 47 Issue 1 05 04 Copyright 2004 Nokia Corporation Page 59 Company Confidential APPENDIX C Component Placement with Test Points Detailed Description See 4 pages with Synthesizer Test Points 1 page Receiver Test Points 1 page Transmitter Test Points 2 pages ...

Страница 60: ...el 190 DC Level 1 35V Testpoint VR3 Band GSM850 Active unit RX Operation mode Continuous or burst Channel 190 DC Level 2 8V Testpoint VR7 Band GSM850 Active unit RX Operation mode Continuous or burst Channel 190 DC Level 2 8V Testpoint VIO Band GSM850 Active unit RX Operation mode Continuous or burst Channel 190 DC Level 1 8V Testpoint VR5 Band GSM850 Active unit RX Operation mode Continuous or bu...

Страница 61: ... TX RX Mode Continuous AGC 14 Channel 661 Inp Pwr 60dBm Inp Freq 1960 0677 Probe Pwr hp 72 r 3 DC Level LNA bias 0 8V Testpoint Ant in Band 850 1900 RX TX RX RX Mode Cont Cont AGC 14 14 Channel 190 661 Input pwr 60dBm 60dBm Inp Freq 881 6677 1960 0677 Probed Pwr hp 62 r 2 65 r 2 Testpoint VC1 VC2 Band GSM850 RX TX RX Mode Continuous AGC 14 Channel 190 Testpoint VC1 VANTL VC2 VANTH DC Level 0 V 0 V...

Страница 62: ... TXQOUTN TXIOUTP TXIOUTQ VC2 VC1 VBD DET Vref1 VR3 VR2 VR5 VTXB_850 VPD_850 VPD_1900 Pin_ 850 Pin_ 1900 Pout_ 1900 o P ut_ 850 Testpoint Ant Band 850 1900 RX TX TX Mode Burst Channel 190 661 PCL 5 0 Power hp 32 5 r 2 29 5 r 2 Testpoint Pout850 Pout1900 Band 850 1900 RX TX TX TX Mode Burst Burst Channel 190 661 PCL 5 0 Power hp 33 r 2 30 r 2 Testpoint VREF1 Band GSM850 RX TX TX Mode Continuous or b...

Страница 63: ... 2 Testpoint VPD 1900 VPD_850 Band 1900 850 RX TX TX TX Mode Burst Burst Graph GSM1900 850 PCL 5 0 PCL 15 10 PCL 19 15 TXP TXC TXQOUTP TXQOUTN TXIOUTP TXIOUTQ VC2 VC1 VBD DET Vref1 VR3 VR2 VR5 VTXB_850 VPD_850 VPD_1900 Pin_ 850 Pin_ 1900 Pout_ 1900 o P ut_ 850 Testpoint VDET Band GSM850 RX TX TX Mode Burst Graph VDET PCL 5 PCL 15 PCL 19 Band GSM1900 Graph VDET PCL 0 PCL 10 PCL 15 Ant ...

Страница 65: ...PF 08130B TB O P power is very sensitive to LOAD variations GSM Dual band antenna match is only 5 dB on GSM850 TX band Battery BL 6C is part of the antenna GSM850 but in the DA 17 jig the bat tery is removed antenna resonance is shifted Coupler is self resonant and must be very close to the GSM antenna Further resonance shift of GSM antenna very careful active calibration method is needed Active c...

Страница 66: ...ion values are equal for all channels on each band Data acquisition MJ 21 The following data must be measured in the MJ 21 jig TX power on MID channel GSM850 PCL 5 GSM1900 PCL 0 RX RSSI level on LOW channel GSM850 GSM1900 RX RSSI level on MID channel GSM850 GSM1900 RX RSSI level on HIGH channel GSM850 GSM1900 The attenuation values of the cables incl power splitter when used and the MJ 21 jig must...

Страница 67: ... the phone in Local mode 2 From the Tuning menu choose Tx Power Level Tuning The Power Level Tuning window opens 3 Select the band and power level to be measured MJ 21 GSM850 power measurement Procedure 1 Move the cursor to PCL 5 2 Align the phone exactly to 32 5 dBm using the and keys 3 Click the Save Continue button RF analyser set to mid channel 190 836 6MHz Zero Span RBW 3MHz Video Trigger RMS...

Страница 68: ... performed on Low Mid and High channels on both bands GSM850 and 1900 Table 3 Channel assignment The following frequencies must be set to the RF generator used for RSSI MJ 21 RSSI procedure 1 Start the phone in Local mode RF analyser set to mid channel 661 1880MHz Zero Span RBW 3MHz Video Trigger RMS power 8 1 0 6 6 1 5 1 2 G S M 1 9 0 0 2 5 1 1 9 0 1 2 8 G S M 8 5 0 H i g h M i d L o w B a n d 8 ...

Страница 69: ...dow opens with further settings for the RSSI reading fea ture MJ 21 RSSI values Use the default settings Measuring mode Sum vector Reading mode Continuous After selecting the above settings click the Start button Set the RF generator power to 60dBm taking into account the losses caused by cables and MJ 21 jig mentioned before and frequencies from the table Perform the measurement on Low Mid and Hi...

Страница 70: ...o Local mode lower position The supply voltage VCC 3 8V is fed through the JBV 1 adapter The shielded box has to be closed for all RF measurements The same parameters must be measured as for MJ 21 Follow the instructions given ear lier TX Power on MID channel GSM850 PCL 5 GSM1900 PCL 0 6 0 5 d B m M J 2 1 _ R X _ 1 9 0 0 _ H I G H 6 0 6 d B m M J 2 1 _ R X _ 1 9 0 0 _ M I D 6 1 d B m M J 2 1 _ R X...

Страница 71: ...ble loss for Auto Tuning Phoenix allows you to set separate loss values at different frequencies for cables and the jig Procedure 1 From the Tuning menu choose Set Loss 2 Enter the cable losses incl Power splitter if used for GSM850 at 824 and 894 MHz and for GSM1900 at 1850 and 1990 MHz 6 8 3 d B m D A 1 7 _ R X _ 1 9 0 0 _ H I G H 6 8 d B m D A 1 7 _ R X _ 1 9 0 0 _ M I D 6 8 d B m D A 1 7 _ R X...

Страница 72: ... Issue 1 05 04 Company Confidential The values in between are interpolated 3 To store the data click Save Setting DA 17 JXS 2 calibration loss Procedure 1 Enter the calibration factors DA 17 values subtracted from the MJ 21 values to the Jig column Note that there are different calibration factors for the TX and RX channels ...

Страница 73: ... generate it by clicking the Add button Assign it the name DA 17 4 Click Save Assigning the product to the jig To make the calibration data valid it is necessary to assign the DA 17 jig to the product RH 47 Procedure 1 Click the Product tab 2 Enter RH 47 into the Product column 3 From the Used Jig dropdown menu choose DA 17 4 First click Save and then Close You are ready for Autotuning GPIB Setup ...

Страница 74: ...cedure 1 Connect the RF analyser and RF generator to the GPIB card 2 Open Tools Options GPIB cards 3 Click the Start button Generators R S CMU200 R S SME Agilent ESG Analyzers R S CMU200 R S FSx series Agilent PSA VSA Use different GPIB address for different devices Autotuning Procedure 1 To start tuning the phone in the DA 17 JXS 2 box choose Auto Tune from the ...

Страница 75: ...2 Click the Tune button in the Auto Tune window and wait approximately 2 min utes before the autotuning algorithm has finished Make sure that the Autotune_RH47 ini file is stored in the Phoenix directory Bluetooth test setup DA 17 Bluetooth coupler is connected to RF I O via a 30 dB attenuator Bluetooth testing Procedure 1 From the Operating mode dropdown menu choose Test ...

Страница 76: ...ration Issue 1 05 04 Company Confidential 2 From the Testing menu choose Bluetooth LOCALS 3 In the BT Software Operational Mode pane choose Normal 4 Enter the BD address of BT Box 2 on the Counterpart BT Device Address line BER must be 0 1 5 Click the Run BER Test button and wait approximately 2 seconds for the result ...

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