TEST AND MEASUREMENT
Issue 1 Section 6 MCUK000601C8
Revision 0 – 48 – Service Manual
3. If the image leak ratio is greater than 30dBc, then proceed to ‘IQ ch gain calibration’.
IQ Gain Check
1. At the Channel Box, press F6 and select TRIM OTHER.
2. Scroll down until IQCH GAIN is highlighted. Press Enter.
Figure 6.24: I, Q data selection field1
3. Enter ‘1’ (for -0.25dB) into the data field and press ENTER.
Figure 6.25: I, Q data selection field 2
4. Measure the image leak ratio. If the image leak ratio is greater than 30dBc, the telephone is within limits. If the image
leak ratio is less than 30dBc, repeat steps1, 2 and 3 with the following IQ Ch gain values:
-0.50dB (enter ‘2’)
-0.75dB (enter ‘3’)
To Next Page
Loading...
