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

Page 229

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Remote Control Commands and Queries

WM-RCM-E Rev D

ISSUED: February 2005

223

STATUS

*SRE

Command/Query

DESCRIPTION

The *SRE command sets the Service Request Enable register
(SRE). This command allows you to specify which summary

message bit or bits in the STB register will generate a service
request. Refer to the table on page 225 for an overview of the

available summary messages.

A summary message bit is enabled by writing a ‘1’ into the

corresponding bit location. Conversely, writing a ‘0’ into a given bit
location prevents the associated event from generating a service

request (SRQ). Clearing the SRE register disables SRQ interrupts.

The *SRE? query returns a value that, when converted to a binary
number, represents the bit settings of the SRE register. Note that
bit 6 (MSS) cannot be set and its returned value is always zero.

COMMAND SYNTAX

*SRE

: = 0 to 255

QUERY SYNTAX

*SRE?

RESPONSE FORMAT

*SRE

EXAMPLE (GPIB)

The following instruction allows an SRQ to be generated as soon as
the MAV summary bit (bit 4, i.e. decimal 16) or the INB summary bit

(bit 0, i.e. decimal 1) in the STB register, or both, are set. Summing
these two values yields the SRE mask 16+1 = 17.

CMD$=“*SRE 17”: CALL IBWRT(SCOPE%,CMD$)