Switching The Rx Gain States; Receiver Diagnostic Signal Tracing - Nokia 6275 Rf Description And Troubleshooting

Nokia Customer Care

Switching the Rx Gain States

Use the RF Gen I/O dialog box to switch the gain state (Hi and Lo) for CDMA and AMPS
modes.
Hi Gain (Default)
State at power up

Receiver Diagnostic Signal Tracing

Use the following to trace the receiver signal.
• An RF signal generator is recommended, however an Agilent call box 8960 may
also be used. For 8960, hit Button CALL SETUP, soft button Active Cell, and then
select CW.
• Inject a CW signal for PCS (1960MHz) or Cell/AMPS (881.52MHz) at a fixed –
25dBm power level.
• Take measurements with the AAS-10 probe.
• Signal levels are approximate, and accuracy may be ± 2dB or more, depending on
position and grounding of probe.
Issue 1 - September 2006
Low Gain State
Cell
AMPS
PCS
CDMA
Figure 22: RF Gen I/O dialog box
Company Confidential
6275/6275i (RM-154)
RF Description and Troubleshooting
Page 27