User manual

Front Panel Operation
3-66 2001-900-01 Rev. K/ August 2010
Meter complete
The METER COMPLETE OUTPUT jack provides a TTL-
compatible output pulse that can be used to trigger other
instruments. The specifications for this trigger pulse are
shown in Figure 3-25.
Typically, you would want the Model 2001 to output a
trigger after the settling time of each measurement. (Settling
time includes the internally set measurement settling time
and the user programmed DELAY period.) An output
completion pulse occurs after each measurement as long as
the measure source is set to external, timer, manual, or
immediate. See paragraph 3.7.2 for details on programming
the measure layer.
The Model 2001 can also output a completion pulse while in
the scan and/or arm layers of operation. Figure 3-22 shows
where these triggers occur in the trigger model. If the scan
layer Source Bypass is enabled (Control = Source) and the
Scan Source is programmed for External, an output trigger
occurs on each return path through the scan layer. If the arm
layer Source Bypass is enabled (Control = Source) and the
Arm Source is programmed for External, an output trigger
occurs on each return path through the arm layer. See
paragraphs 3.7.3 and 3.7.4 for programming the Scan and
arm layers.
External triggering example #1
In a typical test system, you may want to close a channel and
then measure the DUT connected to that channel with a
multimeter. Such a test system is shown in Figure 3-26,
which uses a Model 2001 Multimeter to measure ten DUTs
switched by a Model 7011 multiplexer card in a Model 7001
Switch System.
The external trigger connections for this test are shown in
Figure 3-27. Channel Ready (output) of the Model 7001 is
connected to External Trigger Input of the Model 2001.
Meter Complete Output of the Model 2001 is connected to
External Trigger (input) of the Model 7001.
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Meter complete and asynchronous trigger link output pulse
specifications
Meter
Complete
TTL High
(3.4V Typical)
TTL Low
(0.25V Typical)
10µs
Minimum