Fluke PM6685R User Manual

Command Reference 9-95

:INTernal :FORMat

PM6680B/81/85

«REAL|PACKed»

Internal Format

This command selects the internal data format of the measurement result from the

SENSe block. The purpose of the command is to increase the measurement

speed.

Parameters:

REAL means that the result is calculated in real-time after each measurement.

PACKed means that the raw measurement data is stored internally and the result is not calcu-

lated in real-time between measurements. The results are calculated later when they are

sent to the controller. Since the result is not calculated, other blocks cannot use this

data. That means that you cannot have the DISPlay, OUTPut, and CALCulate blocks

switched on when using PACKed format.

The following measuring functions in PM6680B/81 cannot be used with PACKed

format: Phase, Duty Cycle and Volt.
PM6685 cannot used PACKed format with Duty Cycle.
The internal format affects the number measuring results that the measurement re-

sult buffer can hold.

Format

Measuring Function

Number of Results in

Buffer

PM6680B/85

PM6681

Real:

All functions

2048

7019

Packed:

Frequency, Period, Ratio Totalize

2166

6143

Pulse Width, Time-Interval, Rise/Fall time

764

4466

Phase, Duty Cycle, Volt

N.A.

Low resolution Frequency and Period

N.A.

8191

Low Res. Time-Interval and Pulse Width

N.A.

4095

You must consider this when fetching results with the :FETCh:ARRay query.

*RST condition:

REAL