Keysight E4981A - Reading out Measured Result Using:Fetch? Command; Reading out Measured Result Using:READ? Command

Keysight E4981A 120 Hz/1 kHz/1 MHz Capacitance Meter 67
Reading Out Measured Result
Reading Out Measured Result
Sample Program
See Example 9-6 and Example 9-7 to view an example of reading out
measured result in ASCII and Binary format respectively using *TRG command.
Reading out measured result using :FETCh? command
You can use this readout method when you want to trigger the instrument from
any source other than an external controller or when you want to perform a
process that is between triggering the instrument and reading out the
measured result.
The readout procedure using the :FETCh? command is described below.
Step 1. Set up the trigger mode as necessary.
Step 2. Trigger the instrument by using the method for the trigger mode.
Step 3. Execute the :FETCh? command at the completion of the measurement.
Step 4. Read out the measured result. To repeat the measurement, repeat Steps 2 to
4.
Sample program
See Example 9-8 and Example 9-9 to view an example of reading out
measured result in ASCII and Binary format respectively using :FETCh?
command.
Reading out measured result using :READ? command
You can use this readout method when you want to read out the result
synchronously with the completion of measurement without detecting the time
of trigger in the trigger wait state in your program. Therefore, this is useful, for
example, when you want to trigger the instrument from external equipment
such as a handler and read out the result using an external controller
immediately after the completion of measurement.
The readout procedure using the :READ? command is described below.
Step 1. Use the :TRIGger[:SEQ1]:SOURce command on page 305 to set the trigger
mode to internal trigger (Internal) or external trigger (External).
Step 2. Execute the :READ? command.
Step 3. Trigger the instrument using the method for the trigger mode setup.
Step 4. Read out the measured result. To repeat the measurement, repeat Steps 2 to
4.
To trigger the instrument from an external controller in this procedure, use
the :TRIGger[:SEQ1][:IMMediate] command on page 304.