Fluke PM-3384B, PM-3380B, PM-3390B, PM-3370B Single-shot acquisition, Repetitive acquisitions

’Dimensions trace buffer ’Resets the instrument

’Trigger source becomes IMMediate

’Number of trace samples becomes 512 ’Number of trace sample bits becomes 16 ’Configures for optimal AC-RMS settings ’Initiates single acquisition

’Requests for channel 1 trace data

3 - 30 USING THE COMBISCOPE INSTRUMENTS

3.4.2.1Single-shot acquisition

PROGRAM EXAMPLE:

In this example a single-shot trace acquisition is done via channel 1. The trace bytes are entered as characters in the string response$.

DIM response AS STRING * 1033

CALL Send(0, 8, "*RST", 1)

CALL Send(0, 8, "CONFigure:AC", 1) CALL Send(0, 8, "INITiate", 1)

CALL Send(0, 8, "*WAI;TRACe? CH1", 1)

’

’Notice the *WAI; before TRACe?. The *WAI command takes care that the ’TRACe? CH1 command is executed when the INITiate command is finished.

’
CALL Receive(0, 8, response$, 256)	’Reads the channel 1 trace data

3.4.2.2Repetitive acquisitions

PROGRAM EXAMPLE:

In this example 10 trace acquisitions are done via channel 1. The trace bytes are entered as characters in the string response$. The 10 trace buffers are written to the file TRACE10 on the hard disk. Triggering is done via the GPIB by sending the *TRG command.

DIM response AS STRING * 1033	’Dimensions trace buffer
CALL Send(0, 8, "*RST", 1)	’Resets the instrument
	’Trigger source becomes IMMediate
	’Number of trace samples becomes 512
	’Number of trace sample bits becomes 16
CALL Send(0, 8, "CONFigure:AC (@1)", 1)	’Configures for optimal AC-RMS settings.
CALL Send(0, 8, "TRIGger:SOURce BUS", 1)	’Trigger source = GPIB
OPEN "O",#1,"TRACE10"	’Opens file TRACE10
FOR i=1 TO 10	’10 sequential trace acquisitions
CALL Send(0, 8, "INITiate", 1)	’Initiates an acquisition
CALL Send(0, 8, "*TRG", 1)	’Triggers via the GPIB
CALL Send(0, 8, "*WAI;TRACe? CH1", 1)	’Requests for channel 1 trace
’

’Notice the *WAI; before TRACe?. The *WAI command takes care that

’the TRACe? CH1 command is executed when the INITiate command is finished.

’

CALL Receive(0, 8, response$, 256)	’Reads the channel 1 trace
PRINT #1, response$	’Writes the trace buffer to file
NEXT i	’Next trace acquisition
CLOSE	’Closes file TRACE10