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Section 11: Remote operations
Output triggers
After every measurement (device action) a trigger pulse is applied to the trigger link connector on the
rear panel of the instrument. This out-going trigger pulse can be used to trigger another instrument to
perform an operation.
Counters
All three layers use programmable counters which allow operation to return to or stay in the
respective layer. For example, programming the trigger layer counter for infinity
(:trig:coun inf) keeps operation in the trigger layer. After each device action and subsequent
output trigger, operation loops back to the trigger layer control source. A counter resets when
operation loops back to a higher layer (or idle).
RS-232 serial interface
The Model 6517B has a built-in RS-232 serial interface. Over this interface, you can send program
messages to the instrument and receive response messages from the instrument. You can also place
the instrument in the talk-only mode which allows you to dump readings to an external listening
device, such as a serial printer.
The serial port of the Model 6517B can be connected to the serial port of a computer for send/receive
operation, or to a listener (such as a serial printer) for talk-only operation (see
connections
The SCPI programming language can be used over the RS-232 Serial Interface to communicate with
the Model 6517B. The DDC programming language cannot be used over the RS-232 interface.
11-20
(on page 11-3) for more information).
Model 6517B Electrometer Reference Manual
RS-232 interface
6517B-901-01 Rev. C / August 2015
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