Digital Receive; Digital Receive - Board Tested/Required Matrix For Diagnostics - GE LOGIQ E9 Service Manual

D 5180483-100, R
IRECTION
7-5-12-20

Digital Receive

This group of Diagnostics, test the MRX Board.
NOTE: Same type of tests as the tests available for DRX.
Table 7-25
Line
1
2
3
4
5
6
7
7 - 100
PROPRIETARY TO GE
. 7
EV
Figure 7-69 Digital Receive

Digital Receive - Board Tested/Required Matrix for Diagnostics

Name: Description:
FDEMOD Signal Signal path test starting from
Test the Fixed Demod on the MRX
Digital RX High Speed Bit Error Test on
Beamformer Test the MRX
Digital signal path sourced
Digital Rx Signal from input to RxBF. Does not
Path Test test ADC. Sends simulated
data across the signal path.
Tests the functionality of the
Digital Rx RxBF channel repeater. Looks
Beamformer for latency signal
Repeater Test communication issues along
the signal path.
Output TVG of RxBF with
system configured for max
Digital Rx
number of MLAs supported by
Beamformer
the system. Verifies the
Alignment Test
alignment (4 identical samples
in a row) of IF to MRX.
Input TVG of RxBF with
system configured for max
RxBF Input TVG
number of MLAs supported by
Alignment Test
the system. (Internal and
external test modes of RxBF.)
Output TVG of RxBF with
system configured for max
number of MLAs supported by
system. Each MLA gain is set
RxBF MLA Data
differently to detect MLA
Alignment Test
ordering problems. Verifies
the alignment (4 identical
samples in a row) of IF to
MRX.
Section 7-5 - Common Service Desktop
LOGIQ E9 P
ROPRIETARY
Run Time:
1.) Replace the PCIe cable (BEP5 to MRX
Backplane)
00:03
2.) If MRX test above fails, replace the MRX Board.
3.) Replace the BEP.
00:03
Replace the MRX Board.
00:03
Replace the MRX Board.
00:05
Replace the MRX Board.
00:05
Replace the MRX Board.
00:05
Replace the MRX Board.
00:05
Replace the MRX Board.
S M
ERVICE ANUAL
If this test failed: