Nokia NSB-9 Service Manual page 124

NSB-9
and Q) has always zero value.
Saved tuning values are:
LOP_I
LOM_I
LOP_Q
LOM_Q
AM Suppression Calibration Limits
Band
Item
RSSI
LOP_I *)
LOM_I *)
LOP_Q *)
LOM_Q *)
*) 10-bits LOP/LOM results may also be introduced in two separate 5-bits results. Then
limits are 0 and 31 for each item.
RX Band Filter Response Compensation
Description
Calibrates GSM850 and GSM1900 RX chain gain over whole band. Calibration needs
external signal applied to the receiver. Calibration is done in 9 frequencies.
Band
Item (850/1900)
ch 118 / 496
ch 128 / 512
ch 140 / 537
ch 172 / 586
Page 46
Calibration of Rx lower or upper band I channel positive lo bias
Calibration of Rx lower or upper band I channel negative lo bias
Calibration of Rx lower or upper band Q channel positive lo bias
Calibration of Rx lower or upper band Q channel negative lo bias
GSM850
Low
Typical value
limit
-110...-85 -140
0...1023 0
0...1023 0
0...1023 0
0...1023 0
Table 3: RX Band Filter Response Compensation Limits
GSM850
Low
Typical value
limit
-2.6 ... -1.3 -10
-1.3 ... -0.3 -5
-0.4 ... +0.3 -5
+0.3 ... +0.9 -5
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CCS Technical Documentation
GSM1900
High
Typical value
limit
-80 -110...-90
1023 0...1023
1023 0...1023
1023 0...1023
1023 0...1023
GSM1900
High
Typical value
limit
5 -1.9 ... +0.5
5 -0.3 ... +0.8
5 0.0 ... +1.0
5 +0.4 ... +1.1
Low High
limit limit
-140 -80
0 1023
0 1023
0 1023
0 1023
Low High
limit limit
-10 5
-5 5
-5 5
-5 5
Issue 1 04/03