Actuators And General-Purpose Switching - Agilent Technologies 34901A User Manual

Chapter 8 Tutorial

Actuators and General-Purpose Switching

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.
Actuator
NO = Normally Open
In the above diagram, the resistance is 60
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 10
selected by closing the appropriate channel(s) on the module.
384
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Ω
10
COM
NO 10 Ω
COM
NO 10 Ω
COM
NO Ω
10
COM
NO Ω
10
COM
NO Ω
10
Ω
when all of the actuator
Resistance Out
Ω Ω
to 50 are