Nokia RM-12 Troubleshooting Instructions page 25

RM-12
CCS Technical Documentation
Figure 2: GSM1900 RX I or Q signal (trace2), burst mode
GSM1900 receiver burst mode I or Q signal at ch 661 with input signal 1960.067MHz, level –
90 dBm at RF-connector.
st
Trace2: With wider time scaling both monitoring and own RX bursts are seen, 1 burst (shorter)
nd
is monitoring and 2 burst (longer) is own RX burst.
Trace1: External LNA VCC supply voltage at burst mode, input level –90 dBm. Measured from
testpoint LNA_VCC.
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