Agilent 34980A  Multifunction Switch/Measure Unit *34980-90005*

1 Introduction to the 34980A
The Actuator / General-Purpose Switches
You can think of the 34937A, 34938A, and 34939A modules as a control
outputs because they are often used to control external power devices.
For example, the 34937A provides 28 independent, isolated Form C
(SPDT) switches. Each channel can switch up to 300V dc or ac rms. Each
switch can also switch up to 1A dc or ac rms up to 60W maximum. For
example, the maximum current that you can switch at 120V is 0.45A as
shown below.
120
300
100
50
30
.2 .5 1
For control applications, the GP modules have the following advantages:
Higher voltage and power rating than the digital output channels.
The actuator switches can also be used to control power devices.
When used with high-power devices, however, it is critical that you
provide protection to the switch from capacitive and inductive loads to
ensure maximum relay life.
20 Agilent 34980A Mainframe User’s Guide