Fluke PM-3390B, PM-3380B, PM-3370B, PM-3394B Resets the instrument, Initiates single acquisition

COMMAND REFERENCE 4 - 111

Description:

The TRACe? query reads a binary trace block from channel acquisition memory (CH1 to CH4) or from register memory (M1 to M8 for standard memory and M9 to M50 for extended memory). The TRACe command writes a binary trace block to register memory (M1 to M8 for standard memory and M9 to M50 for extended memory).

A specified constant can also be written into trace register memory. If a constant is specified, the rounded signed constant value is copied to all trace points in the register memory.

Trace data can only be read when the trace memory is not empty. The internal trace administration data is not affected. If the length of the trace block doesn’t match the length of the destination register, the following happens:

•If the destination register is longer, the remainder of the destination register is not affected.

•If the destination register is shorter, the remainder of the trace block is ignored. In both cases no error is reported.

If the oscilloscope is in the analog mode, error -221 "Settings conflict;Digital mode required" is generated.

Note: If the queried trace is being built, the query action will take place after completion of the building process. To cancel running acquisitions, use the ABORt command.

As an example the format of the block data of a trace of 512 "16-bit" samples is shown:

trace bytes

# 4 1 0 2 6 <16> <msb 1> <lsb 1> . . . <msb 512> <lsb 512> <checksum> <NL>

trace sample 512 trace sample 1

byte with decimal value 16 number of trace bytes (1026) number of digits of 1026

Example 1:

In this program example a trace is read from the actual signal at input channel 1. The received data block is converted to an array of voltages. This program example works for traces of 512 samples, consisting of 8 bits (1 byte) or 16 bits (2 bytes) samples.

Send → *RST	Resets the instrument.
Send → CONFigure:AC (@1)	Configures for AC-RMS.
Send → INITiate	Initiates single acquisition.
Send → *WAI	Waits for end of acquisition.