Keysight Technologies N5221BU-665, Manual

Page: 56 / 84

56 Installation Note N5222-90128
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
➀
through item
➄
as shown in Figure 36 . (i.e., one end was installed
in Figure 34 on page 54 .)
2. Reconnect the W208 – N5240-60112 (Source 1) and W210–
N5240-60113 (LO Source) cables and connect W209 – N5240-60114
(Source 2) to the LFE board as shown – (items
➅
through
➇
). The other
end of the W208 N5240-60112, W209 N5242-60114, and W210
N5240-60113 cables are connected to the A11 direct digital synthesizer
(DDS) – (x4) assembly in a later step. Refer to Figure 36 and see also,
Figure 34 on page 54 .
Figure 36 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), N5240-60112, N5240-60113, and N5240-60114)