Nokia 2125 Troubleshooting Manual page 10

2125/2125i/2126/2126i/2128i (RH-71)
RF Description and Troubleshooting
Table 2 shows the Tx DC test points shown in
Test Point
1
2
3
4
5
6
7
8
Page 10
Table 2: Tx DC Test Points
Description
AGC 1
AGC 2
VR6
Tx UHF LO lock voltage
VR1B
Tx IQ in
VR2 (power detector)
Power detector output
©2005 Nokia Corporation
Figure 6.
Value
From 0.1 to 1.8 V
From 0.1 to 1.8 V
2.8 V
1.2 V
4.8 V
1.2 V
With oscilloscope: 500 mV p-p
2.76 V
PCS:
• 1.9 V at < 5 dBm
• 1.6 V at 15 dBm
• 0.8 V at 25 dBm
Cell:
• 1.9 V at < 5 dBm
• 1.7 V at 15 dBm
• 1.3 V at 25 dBm
Company Confidential ISSUE 1 08/2005