Receiver - Nokia NHM–7 Series Troubleshooting Instructions

PAMS Technical Documentation

Receiver

"RX_I" and " RX_Q"
– Local mode, continuous mode, "FEG ON
+46 dB"
– RF amplitude to antenna –102 dBm
– RF generator frequency 67,71 kHz above
assigned RF channel freq
900 LNA out
– RF–level at antenna port eg. –50 dBm
– RX continuous mode (local mode)
– difference between AGC –settings
"FEG on" and "FEG off"
roughly 25 dB (using 250 ohm
passive RF–probe)
900 LNA Vcc
– RX continuous mode (local mode)
– 2,6 V DC voltage "FEG ON"
– 0 V DC voltage "FEG OFF"
900 LNA bias
– RX continuous mode (local mode)
– 2,6 V DC voltage "FEG ON" and "FEG
OFF"
900 mod out
– TX on local mode
– example power measured with 1 kOhm
passive RF–probe –22 dBm
Issue 1 10/2001
1800 LNA out
– RF–level at antenna port eg. –50 dBm
– RX continuous mode (local mode)
– difference between AGC –settings
"FEG on" and "FEG off"
roughly 30 dB (using 250 ohm passive
RF–probe)
1800 LNA Vcc
– RX continuous mode (local mode)
– 2,6 V DC voltage "FEG ON"
– 0 V DC voltage "FEG OFF"
1800 LNA gs
– RX continuous mode (local mode)
– 2,6 V DC voltage "FEG OFF"
– 0 V DC voltage "FEG ON"
1800 mod out
– TX on local mode
– example power measured with 1 kOhm
passive RF–probe –20 dBm
E Nokia Corporation
NHM–7
Troubleshooting Instructions
Page 33