Target
Power Level
Peak Power
(dBm)
Tolerance
(dB)
Initial Calibration Value
Change per dB
PL18
7
±5
82
79
1.89
2.04
PL19
5
±5
78
76
1.67
1.72
Calibration of output power on each power level
To be able to calibrate the ramping gain it is first necessary to switch the unit into Test Mode (section 7.3).
This procedure must be followed for all power levels PL5-PL19, for low, medium and high channels:
1.
Set the Channel box controls to Channel 62 at Power Level 5, normal burst modulated with random data as
follows:
a)
Press the down arrow until CHANGE CH <62> is highlighted and then press ENTER.
b)
Press the down arrow until PL <L19> is highlighted. Press the move left arrow until <5> appears in the
highlighted field. Press ENTER.
c)
(Figure 11) Press the down arrow until TX DATA <OFF> is highlighted.
Press the move arrow until <NRL R> appears in the highlighted field. Press ENTER.
Figure 11:
Tx data field
600-0722
2.
At the GSM test unit measure the Peak Power.
3.
If the measured power is in the range of the target power (see previous table), then proceed to step 10.
4. (
Figure 12) At the Channel box press F7 to view the TRIM for the mid-channel.
Figure 12:
Power level view 1.
600-0723
Issue 1
Section 7
MCUK980101C8
Revision 0
7 - 10
Service Manual
TEST AND MEASUREMENT
Summary of Contents for EB-BL600
Page 6: ...This page is intentionally blank Issue 1 vi MCUK980101C8 Revision 0 Service Manual ...
Page 87: ...RF EG70607h MCUK980101C8 Section 8 Issue 1 Service Manual 8 3 Revision 0 CIRCUIT DIAGRAMS ...
Page 88: ...Logic EG70638h Issue 1 Section 8 MCUK980101C8 Revision 0 8 4 Service Manual CIRCUIT DIAGRAMS ...
