Nokia NHM-1 Series Troubleshooting Instructions page 16

NHM-1
Troubleshooting instructions
700 + 67.710 kHz offset) –90 dBm signal to the RF-connector (remember to compensate
for cable attenuation).
Measuring with an oscilloscope on "RX_" or "RX_Q" this picture should be seen on a
working GSM900 or GSM1800 receiver:
Signal amplitude is 152mVpp, DC offset 1,35V, frequency 67 kHz.
If this signal is not sen continue to the troubleshooting diagram for :
Page 16
Figure 8: Oscilloscope screen shot
Nokia Corporation.
CCS Technical Documentation
Issue 1 11/03