Agilent Technologies 4338B, Operation Manual

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Reading Out Measured Result 4338B
Reading out measured result using :FETC? command
Y ou 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 :FETC? command is described below .
1. Set up the trigger mode as necessary .
2. Trigger the instrument by using the method for the trigger mode .
Note
T o trigger the instrument from an external controller in this procedure , use the
:TRIG command.
3. Execute the :FETC? command at the completion of the measurement.
4. Read out the measured result. T o repeat the measurement, repeat Steps 2 to 4.
Figure 4-6 and Figure 4-7 show sample programs using the :FETC? command. Figure 4-6 is
for the ASCII transfer format and Figure 4-7 is for the binary transfer format.
These programs , when an external trigger is inputted and the measurement nishes , read
out the measurement status , measured primary parameter result, measured secondary
parameter result, and comparator sorting result (when the comparator function is ON) and
display them.
The program of Figure 4-6 is detailed below .
Line 60 Sets the GPIB address .
Line 70 Sets the data transfer format to the ASCII format.
Lines 90 to 100 Turns ON the trigger system continuous startup and sets the trigger mode
to the external trigger .
Lines 120 to 130 Reads out the ON/OFF state of the comparator function and assigns it
into the Comp ag variable .
Lines 170 to 210 Makes the setup generate an SRQ when measurement nishes and clears
the status byte register and operation status event register .
Lines 250 to 260 Sets the branch destination of the SRQ interrupt and enables the SRQ
interrupt.
Lines 270 to 280 Displays the message to prompt the user to input an external trigger and
then waits until the external trigger is inputted and the measurement
nishes .
Line 300 Executes the measured result readout command (:FETC?).
Line 320 If the Comp ag value is 1 (the comparator function is ON), reads out
the measurement status , measured primary parameter result, measured
secondary parameter result, and comparator sorting result.
Line 340 If the Comp ag value is not 1 (the comparator function is OFF), reads
out the measurement status , measured primary parameter result, and
measured secondary parameter result.
Lines 390 to 410 Displays the measurement status , measured primary parameter result,
and measured secondary parameter result.
Line 430 to 440 If the Comp ag value is 1 (the comparator function is ON), displays the
comparator sorting result.
Line 460 If the Comp ag value is not 1 (the comparator function is OFF), displays
\Comparator : OFF ."
4-18 Remote Operation
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