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Chapter 7 Plug-in Modules
44478A/B 1.3 GHz Dual 4-to-1 MUX Modules
7
44478A Wiring Information
External Wiring The figure below shows the module’s female BNC
connectors and the channel group numbers. The BNC connectors accept
user-supplied male BNC connectors.
Terminations The figure on page 268 shows the SMB connectors on the
main PC Board. The SMB connectors allow you to connect SMB resistive
terminations to any unused channels. SMB resistive terminations are
available from Agilent using the following part number:
•
34585A (set of four 50 Ω terminations for the 44478A)
•
34586A (set of four 75 Ω terminations for the 44478B)
Note To maintain proper operation, unused channels should be terminated by
plugging a 50 Ω or 75 Ω SMB type resistive termination (50 Ω for 44478A
and 75 Ω for 44478B) onto the male SMB connector provided for each
channel.
C HANNEL 00
C HANNEL 03
C HANNEL 02
COMMON00
C HANNEL 01
C HANNEL 10
C HANNEL 13
C HANNEL 12
COMMON10
C HANNEL 11
Group 00 Group 10
00
01 C OM00 02 03 10
11
COM10
12
13
44478 MUL TIPL EXER
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