Nokia RH-77 Troubleshooting Manual page 20
Rf description and troubleshooting
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Also See for RH-77:
- Manual (12 pages) ,
- Troubleshooting manual (8 pages) ,
- Disassembly/assembly (8 pages)
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2118 (RH-77)
RF Description and Troubleshooting
Figure 12: RF Main Mode dialog box for Rx IF troubleshooting
5. Click Set.
Note: Be sure that the "RF Main Mode set successfully" message appears in
the status bar.
6. Use a spectrum analyzer to test TP3 (I+,I-, Q+, Q-). Set the S.A to 300 KHz center
frequency, 200 KHz SPAN, and +10 dBm reference level. The spectrum analyzer
should read –8 dBm without any settings to the PDM.
7. Use
Table 12
Table 13
shows the steps for Rx IF troubleshooting. See
illustration of the corresponding test points.
Step #
Part
TP1
L702R
TP2
L701L/R
Page 20
to configure the CDMA generator code domain.
Table 12: CDMA Generator Code Domain Setup
Channel
Power
Pilot
-7dB
Paging
-12dB
Traffic
-15.6dB
Sync
-16dB
Table 13: Rx IF Troubleshooting
Typical
Value/
Function
Frequency
HP85024A
IF-IN
+1.3 dBm/
183.6MHz
SAW Out
-16 dBm/
183.6MHz
©2005 Nokia Corporation
Nokia Customer Care
Walsh Code
0
1
10
32
Figure 13
Typical
Value
Comments
Frequency
Prod Probe
-12/-27 dBm
I.F Input to Z701 (I.F filter).
183.6 MHz
NOT 50 ohm
-35/-50 dBm
Differential outputs of Z701.
183.6 MHz
NOT 50 ohm
Company Confidential
on page
22
for an
Issue 01 04/2005
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Troubleshooting
