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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General <strong>Measure</strong>ment Configuration<br />
Features and Functions 3<br />
This section contains general information to help you configure the<br />
instrument for making measurements. Since these parameters are used<br />
by several measurement functions, the discussion is combined into one<br />
common section. Refer to the later sections in this chapter for more<br />
information on parameters specific to each measurement function.<br />
Overview of <strong>Measure</strong>ment Modes<br />
Two modes of operation are available with the <strong>34980A</strong>, depending on the<br />
level of switching and measurement that you wish to directly control: <br />
the Stand- Alone DMM Mode and the Scanning Mode.<br />
Stand-Alone DMM Mode<br />
In the Stand- Alone DMM Mode, the internal DMM makes measurements of<br />
whatever signals are present on the Analog Buses. In this mode, you have<br />
full control of what channel relays are closed and connected to the<br />
appropriate Analog Bus for the measurement. You can route your signals<br />
directly to the internal DMM using the <strong>34980A</strong> multiplexer and matrix<br />
modules, or you can connect to external signals via the Analog Bus<br />
connector located on instrument’s rear panel (see “Analog Buses” on<br />
page 84).<br />
Front Panel Operation:<br />
To configure the most common measurement parameters for the<br />
internal DMM, use the DMM (Configure) key.<br />
To close the desired channel relays and Analog Bus relays, use the<br />
Close key. The Analog Bus relays on the multiplexer and matrix modules<br />
are numbered s911, s912, s913, etc.<br />
To auto- trigger the internal DMM and display continuous readings,<br />
press the DMM (<strong>Measure</strong>) key. Press the DMM (<strong>Measure</strong>) key again to<br />
stop taking measurements.<br />
For additional triggering control and to store DMM readings in memory,<br />
use the Scan (Configure) key to set the triggering parameters, and then<br />
press and hold the Scan (<strong>Measure</strong>) key to initiate the DMM<br />
measurement. These selections are available only for stand- alone DMM<br />
use when a scan list has not been defined (see “Stand- Alone DMM<br />
Mode” on page 81).<br />
To stop storing readings in memory during long measurements, <br />
press and hold the Scan (<strong>Measure</strong>) key.<br />
<strong>Agilent</strong> <strong>34980A</strong> Mainframe User’s Guide 81
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