Status Commands - Stanford Research Systems BJT SIM911 Operation And Service Manual

2.4 Commands

2.4.5 Status commands

*STB?
Example:
*SRE(?) i
Example:
STOL(?) i
Example:
OVLD?
Example:
SIM911 BJT Preamp
The Status commands query and configure registers associated with
status reporting of the SIM911.
Status Byte
Reads the Status Byte register.
Execution of the *STB? query clears all flag bits set in the Status Byte
register (see the Register Model section 2.5 for more about the Status
Byte register).
*STB also causes the STATUS signal to be deasserted, as long as the
module is not in Status-Monitors-Overload mode (see STOL).
*STB?
128
Service Request Enable
Set (query) the Service Request Enable register to i See section 2.5.
*SRE 128
Status Monitors Overload
Set (query) the Status-Monitors-Overload mode to i (0, 1) .
STOL 1 causes the STATUS signal (pin 2 on J401 Dsub-15 connec-
tor) to become a real-time monitor of the amplifier overload detect
circuit. STOL 0 restores STATUS to reflect the overall service re-
quest message from the Status Byte register. In applications where
prompt flagging of an amplifier overload is required, STOL 1 mode
provides a single interface line for this signal.
The state of STOL is stored in non-volatile memory and restored
upon power-on reset. Neither *RST nor device-clear a ects the state
of STOL.
STOL 0
Overload
Reports the current overload condition. Query returns 0 for normal
operation, or 1 if the amplifier is presently in overload.
OVLD?
1
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