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S46 Microwave Switch System Keithley Instruments, Inc. Terminated Teledyne Installation Guide 28775 Aurora Road Cleveland, Ohio 44139 (440) 248-0400 www.keithley.com Introduction This guide contains information on S46 relay installation and system configuration that is necessary after installing new relays. WARNING The information in this section is only intended for qualified service personnel.
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Relay installation Before installing the relays, remove the screws that secure the S46 top cover, and then remove the cover. WARNING Disconnect the line cord and all cables from the S46 before removing the top cover. RELAY 1-8 installation 1. Unplug line cord, disconnect all cables, and remove the Top Cover . 2.
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Figure 2 Connecting control wires to SPDT relay RELAY A-D installation 1. Remove the four screws securing the cover plate over the mounting hole where the new relay is to be installed (see Figure 2. Connect the supplied ribbon cable to the relay securing it with the two 4-40X1/4PPHSEM screws. 3.
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Figure 4 Relay connector locations System configuration After installing the new relays, you must program the S46 for the new relay configuration with the following command: :ROUT:CONF:CPOL <clist> <clist> is defined as follows: clist = (@0 | 3-6, 0 | 3-6, 0 | 3-6, 0 | 3-6, 0 | 1, ... 0 | 1) Relay: ...
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