T/R Signal Path - GE LOGIQ E9 Service Manual

D 5180483-100, R
IRECTION
7-9-19-1 Transmit Signal Path and Transmit/Receive (T/R) Signal Path (cont'd)
7-9-19-1-1Transmit/Receive (T/R) Signal Path
...
T/R aTGC
T/R Test
• Uses pulsers to inject signal into the front-end.
• Measures amplitude and frequency.
• Dead channel detection.
• Reports failures at channel level.
Analog Rx tests should be run first.
Failure indicates problem with GTX.
PROPRIETARY TO GE
. 7
EV
Figure 7-182 T/R Signal Path
GRX64
David
Pulser
0
GRX128
David
1
192
David
aTGC
2
David
Pulser
3
192
Chapter 7 Diagnostics/Troubleshooting
GTX 64 Ch
GTX 64 Ch
Nathan DRX 64
GTX
A/D
0
64 Ch
Nathan
1
Nathan
2
Nathan
A/D
3
GDIF
GDIF
LOGIQ E9 P
ROPRIETARY
DRX 64
DRX 64
GFI
FDEM SDEM
BEP
ATGC T_sig
S M
ERVICE ANUAL
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