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Remote control commands and queries, Communication – Teledyne LeCroy X-STREAM OSCILLOSCOPES Remote Control User Manual

Page 115

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Remote Control Commands and Queries

WM-RCM-E Rev D

ISSUED: February 2005

109

COMMUNICATION

COMM_HEADER, CHDR

Command/Query

DESCRIPTION

The COMM_HEADER command controls the way the oscilloscope
formats responses to queries. There are three response formats:

LONG, in which responses start with the long form of the header
word; SHORT, where responses start with the short form of the

header word; and OFF, for which headers are omitted from the
response and units in numbers are suppressed.

Unless you request otherwise, the SHORT response format is used.

¾ This command does not affect the interpretation of messages

sent to the oscilloscope. Headers can be sent in their long or
short form regardless of the COMM_HEADER setting.

¾ Querying the vertical sensitivity of Channel 1 may result in one

of the following responses:

COMM_HEADER RESPONSE

LONG

C1:VOLT_DIV 200E-3 V

SHORT

C1:VDIV 200E-3 V

OFF 200E-3

COMMAND SYNTAX

Comm_HeaDeR

: = {SHORT, LONG, OFF}

QUERY SYNTAX

Comm_HeaDeR?

RESPONSE FORMAT

Comm_HeaDeR

EXAMPLE (GPIB)

The following code sets the response header format to SHORT:

CMD$=“CHDR SHORT”: CALL IBWRT(SCOPE%,CMD$)

RELATED COMMANDS

COMM_HELP_LOG