I Inc Calibration
1.
Set Ich o set to 3 see Ich check step 1
2
Using the spectru analyser easure the carrier leakage ratio
3
I the carrier leakage ratio is greater than 30 c then the unit is K o set calibration is co plete
4.
I not then repeat steps 1 2 an 3 above or Ich o set values 9 12 15 18 21
5.
I the carrier leakage ratio is still not greater than 30 c then go to ch Check
Qch Check
1.
Set Ich o set to 0
2.
Set ch o set to 3
a At the C
press 6
b
igure 21 ress ove o n arro until C
SET appears in the iel ress E TER
c
igure 22 Enter 3 into the ata iel an press enter
3.
Measure the ne carrier leakage ratio
4.
I the carrier leakage ratio is greater than 30 c the unit is K o set calibration is co plete
5.
I the original carrier leakage ratio see I ch sets step 2 is greater than ne carrier leakage ratio then go
to ec Calibration
6.
I the original carrier leakage ratio is less than ne carrier leakage ratio then go to Inc Calibration
Q Dec Calibration
1.
Set ch o set to 61 see ch Check step 2
2.
Measure carrier leakage ratio
3.
I the carrier leakage ratio is greater than 30 c then unit is K o set
calibration is co plete
4.
I not then repeat steps 1 2 an 3 above or ch o set values 58 55 52 49 4643
5.
I the carrier leakage ratio is still less than 30 c then unit is a ail
Q Inc Calibration
1.
Set ch o set to 6see ch Check step 2
2.
Measure carrier leakage ratio
3.
I carrier leakage ratio is greater than 30 c then unit is K o set calibration is co plete
4.
I carrier leakage ratio is less than 30 c then repeat steps 1 2 an 3 above or ch o set values 9 12 15
18 21
5.
I carrier leakage ratio is less than 30 c then unit is a ail
I, Qch Gain
IM RTA T I ch o set calibration shoul be one be ore this calibration
Spectru Analyser Setup
centre re uency 902 4M
R
10k
1k
span 1M
s eep ti e 2sec
1.
Set the C
controls to channel 62 at po er level 5 nor al burst o ulate ith all 0 s
a
ress the o n arro until C A GE C is highlighte an then press E TER
b
ress the o n arro until L is highlighte ress E TER
c
ress the o n arro until T ATA is highlighte ress the ove arro until appears in the
highlighte iel ress E TER
Issue 1
Section 7
MCUK970901C8
Revision 0
7 - 16Service Manual
TEST AND MEASUREMENT
Содержание EB-G450
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