Installation Note N5222-90114 53
Installation Procedure for the Upgrade
Step 35. Connect/Reconnect A71–A74 Bias-Tee Combiner’s Cables
to A70 Low Frequency Extension (LFE) Board and the Other Ends of
the Cables Connected to the IF Multiplier (IF MUX) Board
1.
Reconnect/connect the (8120-5014 (x2), 8120-5017 (x3)) IF gray cables
item
through item
as shown in
. (i.e., one end was installed
in
.)
2.
Reconnect the W171 – N5242-60078 Source 1 and W193 – N5242-60080
LO Source cables and connect W192 – N5242-60079 Source 2 to the LFE
board as shown – (items
through
). The other end of the
N5242-60078, N5242-60079, and N5242-60080 cables are connected to
the Source1, Source 2, and LO Source boards in a later step (i.e.,
N5242-60078 and N5242-60080 should still be connected to Source1 and
LO Source (respectively), but verify the connections). Refer to
and see also,
.
Figure 31
Connect A71–A74 bias-T combiners new cables to the A70 LFE board the
other ends of the LFE cables to the LFE Board (8120-5014 (x2), 8120-5017
(x3), N5242-60078, N5242-60079, and N5242-60080)