Multiple Trigger Arming; Making Synchronous Readings - Agilent Technologies 3458A User Manual

50 OUTPUT 722;"NRDGS 10, AUTO"
60 OUTPUT 722;"TRIG SGL"
70 ENTER 722;Rdgs(*)
80 PRINT Rdgs(*)
90 END
Multiple Trigger
Arming
10 OPTION BASE 1
20 DIM Rdgs(50)
30 OUTPUT 722;"PRESET NORM"
40 OUTPUT 722;"TARM HOLD"
50 OUTPUT 722;"TRIG AUTO"
60 OUTPUT 722;"INBUF ON"
70 OUTPUT 722;"NRDGS 10,AUTO"
80 OUTPUT 722;"TARM SGL,5"
90 ENTER 722;Rdgs(*)
100 PRINT Rdgs(*)
110 END
Making Synchronous
Readings
84 Chapter 4 Making Measurements
!10 READINGS/TRIGGER, AUTO SAMPLE EVENT
!TRIGGER READINGS
!ENTER READINGS
!DISPLAY READINGS
The second parameter of the TARM command allows you to specify multiple
trigger arming. When multiple trigger arming is specified, a single
occurrence of the trigger arm event arms the multimeter the specified number
of times. (The trigger arm event must be SGL for multiple arming.) This
causes the multimeter to make multiple groups of readings as shown in Figure
17.
Figure 17. Multiple trigger arming
In the following program, the NRDGS command selects 10 readings per
trigger event. The second parameter of the TARM command specifies 5
armings. This program stores 5 groups of ten readings for a total of 50
readings.
!COMPUTER ARRAY NUMBERING STARTS AT 1
!DIMENSION ARRAY FOR 50 READINGS
!TARM AUTO, TRIG SYN, DCV AUTORANGE
!HOLD TRIGGER ARM EVENT
!AUTO TRIGGER EVENT
!ENABLE INPUT BUFFER
!10 READINGS/TRlGGER, AUTO SAMPLE EVENT
!ARM TRIGGERING 5 TIMES
!ENTER READINGS
!PRINT READINGS
You can synchronize the multimeter to the controller by setting the trigger
arm, trigger, and/or sample event to synchronous (SYN). The synchronous
event occurs whenever the multimeter's output buffer is empty, reading
memory is off or empty, and the controller requests data. This means that
measurements are made whenever the controller wants them. This is a very
important feature for remote operation, especially when the multimeter is in
the high-speed mode.
In the high-speed mode, the synchronous event ensures that the controller is
ready to accept readings and will not slow the reading rate. Refer to