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2.
igure 23 Using the spectru analyser easure the i age leak ratio I age leak ratio is the easure ratio
o peak po er an the po er at 135k belo peak re uency
E a ple
peak po er 902 468 h
33
po er at 135k belo peak po er -9
i age leak ratio 33 - -9
42
Figure 23:
I age leak ratio
500-0723
3.
I i age leak ratio is greater than 30 c then unit is Ko set calibration is co plete
4.
I i age leak ratio is less than 30 c then go to Ich gain calibration
IQch Gain Calibration
1.
Set I ch gain to 0
a
n the C
press 6
b
igure 21 ress ove le t arro until I C GAI iel is highlighte ress E TER
c
igure 22 Enter 2 into the ata iel ress E TER
2.
Measure the i age leak ratio
3.
I i age leak ratio is greater than 30 c then unit is Ko set calibration is co plete
4.
I i age leak ratio is less than 30 c then repeat steps 1 2 an 3 above ith I ch gain values 1 2 3 4 5 6
an 7
5.
I i age leak ratio is still less than 30 c then go to ch gain calibration
MCUK970901C8
Section 7
Issue 1
Service Manual
7 - 17
Revision 0
TEST AND MEASUREMENT
Содержание G450
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Страница 87: ...9 2 Handsfree Unit LA70326E MCUK970901C8 Section 9 Issue 1 Service Manual 9 3 Revision 0 PCB LAYOUT DIAGRAMS...