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6. Repairing
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Test item
MODE
Procedure
Start up
E-GSM
1. Set SIM card and dummy battery to HHP
2. Power on HHP
3. Wait to indicate “GSM Test Net 001”
Call setup
E-GSM
1. Input the PTE command “StartCall”
2. Input the PTE command “Receivecall”.
3. Wait to indicate “Active” to establish call
TX Power
E-GSM
1. ARFCN is assign to Mch ( and Lch/Hch )
DCS1800
2. Set PL to 5(E-GSM) or 0(DCS1800)
3. Wait to establish hand over
4. Measure output power
RMS Phase error
E-GSM
1. ARFCN is assigned to Mch ( or Lch/Hch )
DCS1800
2. Set PL to 5(E-GSM) or 0(DCS1800)
3. Wait to establish hand over
4. Change mode of GSM tester to “Phase/FREQ”
5. Set analyze burst number to 50
6. Read “RMS maximum” window
PEAK Phase error
E-GSM
1. ARFCN is assigned to Mch ( or Lch/Hch )
DCS1800
2. Set PL to 5(E-GSM) or 0(DCS1800)
3. Wait to establish hand over
4. Change mode of GSM tester to “Phase/FREQ”
5. Set analyze burst number to 50
6. Read “PEAK maximum” window
Frequency Error
E-GSM
1. ARFCN is assigned to Mch ( or Lch/Hch )
DCS1800
2. Set PL to 5(E-GSM) or 0(DCS1800)
3. Wait to establish hand over
4. Change mode of GSM tester to “Phase/FREQ”
5. Set analyze burst number to 50
6. Read “Frequency error maximum” window
Power Vs Time
E-GSM
1. ARFCN is assigned to Mch
DCS1800
2. Set PL to 5(E-GSM) or 0(DCS1800)
3. Wait to establish hand over
4. Change mode of GSM tester to “Power Ramp”
5. To check pass/fail indication under three mode “TOP
2dB” “Rise edge” and “Fall edge”
RX Class2 RBER
E-GSM
1. ARFCN is assigned to Mch*1
DCS1800
2. Set PL to 5(E-GSM) or 0(DCS1800)
3. Wait to establish hand over
4. Change mode of GSM tester to “Bit error”
5. To define sampling value to 10000
6. To define measure “Res Type 2”
7. To adjust base station output level to -103.5dBm
8. Wait to indicate BE Ratio and read it.
RX Level
E-GSM
1. Same setting and procedure as RX RBER
DCS1800
2. Wait to indicate “Mobile reported Rxlev” and read it.
RX Quality
E-GSM
1. Same setting and procedure as RX RBER
DCS1800
2. Wait to indicate “Mobile reported RX Qual” and read it.
Hand over
E-GSM to
1. Change mode of GSM tester to “DUAL BAND”
DCS1800
2. To define DCS1800 parameter. ARFCN to Mch, Base
station output level to -85dBm, Mobile power level to PL0.
3. Push “Execute” and check establish hand over.
*1 Refer to 1.Overview Channel selection condition