HP E1563A, User Manual, Page: 104 / 166

104 Digitizer Command Reference
*SRE and *SRE?
*SRE <
unmask>
specifies which bits of the Status Byte Register are enabled
(unmasked) to generate a IEEE-488.1 service request. Event and summary bits are
always set and cleared in the Status Byte Register regardless of the unmask value.
unmask is the sum of the decimal weights of the bits to be enabled allowing these
bits to pass through to the summary bit RQS (bit 6 in the status byte).
The query form returns the current enable unmask value.
Parameters
A 1 in a bit position enables service request generation when the corresponding
Status Byte Register bit is set; a “0” disables it.
Comments
•
Executable when initiated: Yes
•
Coupled command: No
•
Reset (*RST) condition: unaffected
•
Power-On condition: no bits are enabled
Example
Enable service request on Message Available bit
*SRE 16
Enable request on MAV
*STB?
*STB?
returns the value of the Status Byte Register. The RQS bit (bit 6 in the status
byte having decimal weight 64) is set if a service request is pending.
Comments
•
Executable when initiated: Yes
•
Coupled command: No
•
Related commands:
*SRE
•
Reset (*RST) condition: none
*TST?
*TST? causes the HP E1563A and E1564A Digitizers to execute its internal self-test
and returns the number of the first failed test.
Parameter
Name
Parameter
Type
Range of
Values
Default
Units
unmask
numeric 0 through 255 None