NSB-9
CCS Technical Documentation
Page 46
Copyright
Nokia. All rights reserved.
Issue 1 04/03
and Q) has always zero value.
Saved tuning values are:
LOP_I
Calibration of Rx lower or upper band I channel positive lo bias
LOM_I
Calibration of Rx lower or upper band I channel negative lo bias
LOP_Q
Calibration of Rx lower or upper band Q channel positive lo bias
LOM_Q
Calibration of Rx lower or upper band Q channel negative lo bias
AM Suppression Calibration Limits
*) 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.
Table 3: RX Band Filter Response Compensation Limits
Band
GSM850
GSM1900
Item
Typical value
Low
limit
High
limit
Typical value
Low
limit
High
limit
RSSI
-110...-85
-140
-80
-110...-90
-140
-80
LOP_I *)
0...1023
0
1023
0...1023
0
1023
LOM_I *)
0...1023
0
1023
0...1023
0
1023
LOP_Q *)
0...1023
0
1023
0...1023
0
1023
LOM_Q *)
0...1023
0
1023
0...1023
0
1023
Band
GSM850
GSM1900
Item (850/1900)
Typical value
Low
limit
High
limit
Typical value
Low
limit
High
limit
ch 118 / 496
-2.6 ... -1.3
-10
5
-1.9 ... +0.5
-10
5
ch 128 / 512
-1.3 ... -0.3
-5
5
-0.3 ... +0.8
-5
5
ch 140 / 537
-0.4 ... +0.3
-5
5
0.0 ... +1.0
-5
5
ch 172 / 586
+0.3 ... +0.9
-5
5
+0.4 ... +1.1
-5
5