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Programming Guide
15
*SRE 17
3.1.8 STB
DESCRIPTION
The *STB? query reads the contents of the 488.2 defined status
register (STB), and the Master Summary Status (MSS).
The response represents the values of bits 0 to 5 and 7 of the
Status Byte register and the MSS summary message.
The response to a *STB? query is identical to the response of a
serial poll except that the MSS summary message appears in bit
6 in place of the RQS message.
UERY SYNTAX
*STB?
RESPONSE FORMAT
*STB <value>
<value> : = 0 to 255
EXAMPLE
The following reads the status byte register:
*STB?
Return:
*STB 0
RELATED COMMANDS
*CLS, *SRE
3.1.9 TST
DESCRIPTION
The *TST? query performs an internal self-test and the response
indicates whether the self-test has detected any errors. The
self-test includes testing the hardware of all channels.
Hardware failures are identified by a unique binary code in the
returned <status> number. A “0” response indicates that no
failures occurred.
QUERY SYNTAX
*TST?
RESPONSE FORMAT
*TST <status>
<status> : = 0 self-test successful
EXAMPLE
The following causes a self-test to be performed:
TST?
Return(if no failure):
*TST 0
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