Agilent 34980A Multifunction Switch/Measure Unit *34980-90005*
Agilent 34980A Multifunction Switch/Measure Unit *34980-90005*
Agilent 34980A Multifunction Switch/Measure Unit *34980-90005*
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1 Introduction to the <strong>34980A</strong><br />
You can manually control a scan by repeatedly pressing the Scan<br />
(<strong>Measure</strong>) key from the front panel.<br />
You can start a scan by sending a software command from the remote<br />
interface (MEASure? or INITiate command).<br />
You can start a scan when an external TTL trigger pulse is received.<br />
You can start a scan when an alarm event is logged on the channel<br />
being monitored.<br />
For more information on scanning, see “Scanning” on page 108.<br />
Scanning With External Instruments<br />
If your application doesn't require the built- in measurement capabilities<br />
of the <strong>34980A</strong>, you can order the mainframe without the internal DMM.<br />
In this configuration, you can use the <strong>34980A</strong> for signal routing or<br />
control applications. If you install a multiplexer plug- in module, you can<br />
use the system for scanning with an external instrument. You can<br />
connect an external instrument such as a DMM to the multiplexer's COM<br />
terminals (see below) or you can connect to the <strong>34980A</strong>'s analog buses.<br />
Input<br />
Channels<br />
Common Terminals<br />
(COM)<br />
L<br />
H<br />
External DMM<br />
14 <strong>Agilent</strong> <strong>34980A</strong> Mainframe User’s Guide
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