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NEC Confidential & Proprietary
Test Procedure
Test items should be sequential in the table shown as below. Due to limitation of
GSM test set, test should be started under E-GSM mode, for hand over to DCS1800 or
PCS1900.
Default setting of GSM test set and PSU is shown as follows:
(Internal Loss)
(Please measure cable loss on first set-up and calibrate it.)
CALL STATUS
IDLE
CELL STATUS
ACTIVE CELL
OPERATING MODE
E-GSM
Expected input level
TX Level 5 : 33dBm
Control Base station Broadcast
Broadcast ON
Control Base station Channel
20
Control Base station Amplitude
-85dBm
Mobile Phone Channel
62 ( could be changed ARFCN Mch )
Mobile Phone TX Level
5
Mobile Phone Timeslot
4
PSU output voltage
+3.8V +/- 0.05V
PSU maximum current limit
2500mA
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. Press “1” “2” “3” to connect
2. Wait to indicate “Active” to establish call
TX Power
E-GSM
DCS1800
or
PCS1900
1. ARFCN is assign to Mch ( and Lch/Hch )
2. Set PL to 5(E-GSM) or 0(DCS1800) or 0(PCS1900)
3. Wait to establish hand over
4. Measure output power
RMS Phase error
E-GSM
DCS1800
or
PCS1900
1. ARFCN is assigned to Mch ( or Lch/Hch )
2. Set PL to 5(E-GSM) or 0(DCS1800) or 0(PCS1900)
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 average” window
PEAK Phase error
E-GSM
DCS1800
or
PCS1900
1. ARFCN is assigned to Mch ( or Lch/Hch )
2. Set PL to 5(E-GSM) or 0(DCS1800) or 0(PCS1900)
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
DCS1800
or
PCS1900
1. ARFCN is assigned to Mch ( or Lch/Hch )
2. Set PL to 5(E-GSM) or 0(DCS1800) or 0(PCS1900)
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
DCS1800
or
PCS1900
1. ARFCN is assigned to Mch
2. Set PL to 5(E-GSM) or 0(DCS1800) or 0(PCS1900)
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”
Summary of Contents for N8
Page 1: ...N8 Service Manual Level 3 ...
Page 3: ...NEC Confidential Proprietary Next Section Main Menu Section 1 Precautions for Repair Work 1 ...
Page 24: ...NEC Confidential Proprietary PROGRAMMING CABLE Picture ...
Page 29: ...NEC Confidential Proprietary KEY SHEET ASSEMBLY ...
Page 30: ...NEC Confidential Proprietary INTER CONNECTION ...
Page 31: ...NEC Confidential Proprietary RF BLOCK DIAGRAM ...
Page 52: ...NEC Confidential Proprietary DATA CABLE ...
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Page 110: ...NEC Confidential Proprietary IC251 MAY YB0002 T001 PSC2011CHRS DT BLOCK DIAGRAM ...
Page 111: ...NEC Confidential Proprietary OUTLINE DIAGRAM TOP SEE THROUGH ...
Page 112: ...NEC Confidential Proprietary PIN INFORMATION ...
Page 113: ...NEC Confidential Proprietary PIN INFORMATION CONTINUED ...
Page 114: ...NEC Confidential Proprietary PIN INFORMATION CONTINUED ...
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Page 153: ...NEC Confidential Proprietary Previous Section Next Section Main Menu Section 10 Parts List 10 ...
Page 172: ...NEC Confidential Proprietary Previous Section Main Menu Section 11 Glossary of Terms 11 ...