Tx Tunings - Nokia NSB-9 Service Manual

NSB-9

TX tunings

Tx Power Level Tuning
Calibrates GSM850 and GSM1900 TX power at middle channel. Power control loop keeps
TX power same in all channels. Tuning is done at 4 power levels - other values can be lin-
earized using these points.
GSM850
Power Target
Level value
5 32.5
6 31
7 29
8 27
9 25
10 23
11 21
12 19
13 17
14 15
15 13
16 11
17 9
18 7
19 5
Base -30
*) This tolerance shall be used only for tuning channel (middle channel) at +25°C tem-
perature.
Page 48
Tuning Testing limits
target *)
+/- 0.1 +0.2 / -0.5
+/- 0.5 +/- 1
+/- 0.5 +/- 1
+/- 0.5 +/- 1
+/- 0.5 +/- 1
+/- 0.5 +/- 1
+/- 0.5 +/- 1
+/- 0.5 +/- 1
+/- 0.5 +/- 1.5
+/- 0.5 +/- 1.5
+/- 0.5 +/- 1.5
+/- 0.5 +/- 1.5
+/- 0.5 +/- 1.5
+/- 1 +/- 2
+/- 1 +/- 2
+/- 5 +/- 10
Copyright Nokia. All rights reserved.
CCS Technical Documentation
GSM1900
Power Target Tuning
Level value target
0 29.5 +/- 0.1
1 28 +/- 0.5
2 26 +/- 0.5
3 24 +/- 0.5
4 22 +/- 0.5
5 20 +/- 0.5
6 18 +/- 0.5
7 16 +/- 0.5
8 14 +/- 0.5
9 12 +/- 0.5
10 10 +/- 0.5
11 8 +/- 0.5
12 6 +/- 0.5
13 4 +/- 0.5
14 2 +/- 1
15 0 +/- 1
Base -30 +/- 5
Testing limits
*)
+0.2 / -0.5
+/- 1
+/- 1
+/- 1
+/- 1
+/- 1
+/- 1
+/- 1
+/- 1
+/- 1.5
+/- 1.5
+/- 1.5
+/- 1.5
+/- 1.5
+/- 2
+/- 2
+/- 10
Issue 1 04/03