20 Keysight 34970A/34972A User’s Guide
34902A 16-Channel Reed Multiplexer
– 16 channels of 300 V switching
– Built-in thermocouple reference junction
– Switching speed of up to 250 channels per second
– Connects to the internal multimeter
– For detailed information and a module diagram, see page 213.
Use this module for high-speed scanning and high-throughput automated test
applications. Each of the 16 channels switches both HI and LO inputs, thus
providing fully isolated inputs to the internal multimeter. The module is divided
into two banks of eight two-wire channels each. When making four-wire
resistance measurements, channels from Bank A are automatically paired with
channels from Bank B. You can close multiple channels on this module only if
you have not configured any channels to be part of the scan list. Otherwise, all
channels on the module are break-before-make.
34903A 20-Channel Actuator / General-Purpose Switch
– 300 V, 1 A actuation and switching
– SPDT (Form C) latching relays
– Breadboard area for custom circuits
– For detailed information and a module diagram, see page 216.
Use this module for those applications that require high-integrity contacts or
quality connections of non-multiplexed signals. This module can switch 300 V, 1
A (50 W maximum switch power) to your device under test or to actuate external
devices. Screw terminals on the module provide access to the Normally-Open,
Normally-Closed, and Common contacts for each of the 20 switches. A
breadboard area is provided near the screw terminals to implement custom
circuitry, such as simple filters, snubbers, or voltage dividers.
New serial number prefixes start with MY59000101 and SG59000101
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