Chapter 3 Programming Your Universal Counter for Remote Operation

Elements of SCPI Commands

Examine the portion of the [:SENSe] subsystem shown below:

[:SENSe]

:FREQuency

:ARM

:STOP

:SOURce EXTernal

The root-level keyword [:SENSe] is an optional keyword. To set the Counter ’s frequency stop arm to external, you can use either of the following:

:SENS:FREQ:ARM:STOP:SOUR EXT

or

:FREQ:ARM:STOP:SOUR EXT

Implied Channel (Optional Numeric Keyword Suffix)

Some commands allow specifying a channel with an optional numeric keyword suffix. These commands will show the channel numbers within square brackets. The brackets are not part of the command and are not sent to the Counter.

For example, :INPut[12]:COUPling AC DC represents coupling commands for channels 1 and 2:

:INPut[1]:COUPling AC DC

:INPut2:COUPling AC DC

If you do not specify the channel number, the implied channel is 1. For example, you can send either of the following to configure

channel 1’s coupling to AC:

:INPut1:COUPling AC

or

:INPut:COUPling AC

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Programming Guide