Measurement Commands - Fluke Calibration 8588A Remote Programmer's Manual

Measurement Commands

The result of a measurement is a <RESPONSE MESSAGE UNIT>.
<RESPONSE MESSAGE UNIT> may be a single value or a group of values. The
number of values in <RESPONSE MESSAGE UNIT> is determined by the
product of the numeric settings: TRIGger:COUNt * ARM1:COUNt *
ARM2:COUNt. See Table 5.
Command
:FETCh? [1|2|3|4|5]
Notes: (1)(2)(3)(4)(5)
:READ?
:MEASure:<meter_fn>? <parameters>
Notes: (5)(6)(7)
:FNOW? <num_readings>
:TALK?
Table 5. Measurement Commands
FETCh? retrieves the last valid measurement or block of
measurements resulting from a single trigger system transition
from Idle, through the ARM and Trigger layers back to Idle. The
number of readings in <RESPONSE MESSAGE UNIT> are
exactly the product of the ARM2:COUNt, ARM1:COUNt and
TRIGger:COUNt values. The system will not respond if the
number of triggers received is less than the product of the trigger
and two arm count settings.
FETCh? or FETCh? 1 returns the Primary result. If the active
function provides a secondary reading this can be obtained with
FETCh? 2.
FETCh? 3 returns the value at the front terminals and 4 at the rear
terminals in a Scan measurement.
FETCh? 5 returns the timestamp offset.
FETCh? does not remove results from reading memory. A return
of 9.91E+37 indicates there is not a valid value to return.
READ? is the same as sending the TRIGger commands:
ABORt; INITiate:IMMediate;FETCh? command.
INITiate:IMMediate puts the Product into the wait-for-trigger
state. The trigger system arm and trigger layer conditions must be
satisfied before a measurement is taken and returned.
MEASure:<meter_fn>? <parameters> is identical to:
:ABORt
:CONFigure: <meter_fn> <parameters>
:READ?
Note that the configure command also sets the trigger system to a
particular state - see CONFig.
FNOW? [num_readings], recalls num_readings from memory. If
less than num_readings exist or the parameter num_readings is
not sent, all available readings are returned. Unlike FETCh?, the
new commands remove data from memory.
TALK? Sets the GPIB interface into a mode where each request
to talk from the controller triggers returns a measurement. The
Product is not commanded to listen so time consuming GPIB
reconfigurations are avoided.
This command is only available in GPIB control and is provided
for compatibility when emulating 3458A which is not IEEE 488.2
compliant.
Reference Multimeter and 8 ½ Digit Multimeter
Description
SCPI Commands Reference
17