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Model 7710 Multiplexer Module Instructions for use with the 2750
5. Plug the terminal block into the module.
6. Route wire along the wire path and secure with cable ties as shown. The following figure shows connections
to channels 1 and 2.
Figure 5: Wire dressing
7. Fill in a copy of the connection log. See
Connection log
(on page 8).
8. Close the screw terminal access cover.
9. Using a screwdriver, press in the access screw and turn to lock the cover.
Module configuration
The following figure shows a simplified schematic of the 7710 module. As shown, the 7710 has channels that are
grouped into two banks of 10 channels (20 channels total). Backplane isolation is provided for each bank. Each
bank includes separate cold junction reference points. The first bank contains channels 1 to 10, while the second
bank contains channels 11 to 20. Each channel of the 20-channel multiplexer module is wired with separate
inputs for HI/LO providing fully isolated inputs.
Connections to DMM functions are provided through the module backplane connector.
Channels 21, 22, and 23 are configured automatically by the instrument when using system channel operation.
PA-847 Rev. C June 2023
5
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