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Chapter 4 Retrofitting Options
To Retrofit the Rear Terminals (Option 060)
Assembly-Level Service Guide 4-17
4
4 Insert the connector-end of the W1, with the washers (H6) in place
on the connector, through the appropriate rear INPUTS opening.
5 Insert and tighten the BNC nuts (H3) to secure the coaxial cables
to the rear of the chassis.
6 Solder the lead-end of the cables to their appropriate ground and
input pads on A1 Motherboard Assembly (J16, J17)
For the HP 53131A/132A solder the rear chassis INPUTS 1 cable to J16
and INPUTS 2 to J17. (See Figure 4-3B.)
For the HP 53181A solder the rear chassis INPUTS 1 cable to J17.
(See Figure 4-3B.)
7 Re-install the cover by performing the cover removal procedure,
in Chapter 3 of this guide, in reverse.
This completes the Rear Terminals (Option 060) retrofit procedures.
NOTE
When using the front terminals of Inputs 1 and 2, the rear terminals
should be terminated with a 50-ohm load (such as part number 1250-0207).
When using the rear terminals, these loads should be placed on the front
terminals, or the 50-ohm input button selected (but not both).