Tutorial 7
Keysight 34970A/34972A User’s Guide 321
Actuators and General-Purpose Switching
The 34903A Actuator provides 20 independent, isolated SPDT
(single-pole, double-throw) or Form C switches. This module offers simple on-off
switching which you can use to control power devices or for custom switching
applications. For example, you can use an actuator to build a simple resistance
ladder as shown below.
In the above diagram, the resistance is 60Ω when all of the actuator channels are
open (not connected to COM). Note that when the actuator channels are open, as
shown above, the normally-closed contacts (not shown above) are connected to
COM. Values from 10Ω to 50Ω are selected by closing the appropriate channel(s)
on the module.
COM
COM
COM
COM
COM
NO
NO
NO
NO
NO
Actuator
Resistance Out
NO = Normally Open
10W
10W
10W
10W
10W
10W
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