User Guide

NHM-3
Trouble Shooting PAMS Technical Documentation
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Apply -90dBm
1842.867MHz signal
from generator to
antenna connector
Oscilloscope at RXI
Signal 300mVpp
DC offset 1,2V
Frequency 67,7kHz
PCN chain functional
Oscilloscope
VRX 2.7V
Check Hagar serial
interface
Yes
Yes
Yes
Spectrumanalyzer
V701, RFout
-65dBm
No No
Spectrumanalyzer
1st PCN SAW out
-78dBm
PCN_RX
-77dBm
No
Spectrumanalyzer
T701, unbal
-67dBm
Check
C712,L706, Z702,
R712
No
Yes
Check Hagar
N500
Yes
Check BBNo
Oscilloscope
LNA_P 2.4-2.8V
LNAB_G 0V
Yes
Check RX/TX
Switch
Z900
No
Check Z701
Yes
PCN Fault tree
No
Oscilloscope
V701, RFout 2.1-2.2V
V701, RFin 0.8-0.9V
Yes
Oscilloscope
VRX 2.7V
Check Hagar serial interface
Check Hagar
N500
Yes
Check BaseBandNo
Check
R700, R709, V701
No
Check
V701
Yes
Change generator
level to -55dBm
Yes