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2 - 4 GETTING STARTED WITH SCPI PROGRAMMING
2.2 Initializing the CombiScope Instrument
2.2.1 How to reset the CombiScope instrument
The instrument itself can be reset by sending the
*
RST command. This sets the
instrument to a fixed setup optimized for remote operation. The status and error
data of the instrument can be cleared by sending the
*
CLS command.
PROGRAM EXAMPLE:
’
*****
’Reset the instrument and clear the status data:
’
*****
CALL Send(0, 8, "
*
RST", 1) ’
Resets the instrument
CALL Send(0, 8, "
*
CLS", 1) ’
Clears the status data
2.2.2 How to identify the CombiScope instrument
The identity of the instrument can be queried by sending the
*
IDN? query,
followed by reading the instrument response message. The options of the
instrument can be queried by sending the
*
OPT? query, followed by reading the
instrument response message.
PROGRAM EXAMPLE:
’
*****
’Read and print the identity and options of the instrument:
’
*****
response$ = SPACE$(65)
CALL Send (0, 8, "
*
IDN?", 1) ’
Requests for identification
CALL Receive (0, 8, response$, 256) ’
Reads the ident string
PRINT "Ident: "; LEFT$(response$, IBCNT%) ’
Prints the ident string
CALL Send (0, 8, "
*
OPT?", 1) ’
Requests for options
CALL Receive (0, 8, response$, 256) ’
Reads the options string
PRINT "Options: "; LEFT$(response$, IBCNT%) ’
Prints the options string
2.2.3 How to switch between digital and analog mode
After power on, a CombiScope instrument can be either in the digital or analog
mode. After a
*
RST command the digital mode is selected. The INSTrument sub-
system allows you to switch between the two modes. This can be done by speci-
fying a predefined name (DIGital, ANALog) or the corresponding number
(1 = digital, 2 = analog).
PROGRAM EXAMPLE:
’
*****
’Initialize and change the operating mode of the CombiScope instrument:
’
*****
CALL Send (0, 8, "INSTrument ANALog", 1) ’
Switches to analog mode
CALL Send (0, 8, "INSTrument:NSELect 1", 1) ’
Switches back to digital mode