TEST AND MEASUREMENT
Issue 1
Section 6
MCUK000601C8
Revision 0
– 44 –
Service Manual
Figure 6.18: Power level selection 3
13. Enter the value calculated in step 9 into the data field and then press ENTER.
14. Press ESC.
15. Re-measure the peak power.
16. Repeat steps 5 to 14 for the remaining power levels, in the following order:
PL6, PL9, and PL19.
Power levels between PL9 and PL6.
Power levels between PL14 and PL9.
Power levels between PL19 and PL14.
17. Calibrate PL15 (limits ±0.2 dB).
18. After calibrating at channel 62, the carrier power must be measured and calibrated at LOW and HIGH channels as shown
in the table below.
19. Repeat steps 2 to 14 for the GSM 1800 settings in the following order:
PL10 (limits ±0.5 dB).
PL1, PL5, and PL15.
Power levels between PL1 and PL4.
Power levels between PL15 and PL10.
Power level PL0 (limits ±0.2 dB).
6.6.3.
RSSI
This procedure describes the calibration of RSSI on the mid-channel. This procedure must also be carried out for low / bottom
channel and high / top channel.
The procedure is as follows:
1.
Power the GD92 into Test Set mode in the service channel box.
2.
Connect the telephone to the GSM Test Set and apply a carrier frequency of 68 kHz (for channel 60 = 947.00 MHz) at an
input level of -90 dBm.
3.
At the channel box, highlight CHANGE CH, and, using the left / right cursor keys, select CH <60>. Press ENTER.
4.
Highlight the SET AGC1 field and change the set value to 45 dB. Press ENTER.
5.
Highlight the RSSI dBm <> field and press ENTER
Channel
GSM 900
GSM 1800
Low
1
512
Mid
62
698
High
124
885
Summary of Contents for EB-GD52
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