User manual
26
2. Frequency: 50 Hz
3. Output Range: HI (270V)
4. Mode of Operation: Local
Note: *RST does not clear any of the status registers or the error queue, and does not affect any
interface error conditions.
Command Syntax: *RST
Parameters: None
Example: *RST;
*SRE
This command sets the condition of the Service Request Enable Register. This register determines which
bits from the Status Byte Register are allowed to set the Master Status Summary (MSS) bit and the
Request for Service (RQS) summary bit. A 1 in any Service Request Enable Register bit position enables
the corresponding Status Byte Register bit and all such enabled bits that are logically OR to cause Bit 6 of
the Status Byte Register to be set. When the controller conducts a serial poll in response to SRQ, the RQS
bit is cleared, but the MSS bit is not. When *SRE is cleared (by programming it with 0), it cannot generate
an SRQ to the controller.
Command Syntax: *SRE <NRf>
Parameters: 0 to 255
Example: *SRE<sp>128
Query Syntax: *SRE?
Returned Parameters: <NR1> (register binary value)
Related Commands: *ESE *ESR *PSC
*STB?
This query reads the Status Byte register, which contains the status summary bits and the Output Queue
MAV bit. Reading the Status Byte register does not clear it. The input summary bits are cleared when the
appropriate event registers are read. A serial poll also returns the value of the Status Byte register, except
that bit 6 returns Request for Service (RQS) instead of Master Status Summary (MSS). A serial poll clears
RQS, but not MSS.
Bit Configuration of Status Byte Register
Bit
Position
7 6 5 4 3 2 1 0
Name
OPER
MSS
ESB
MAV
QUES
ERR
Not
Used
Not
Used
Total
Bits
128
64
32
16
8
4
2
1
OPER – Operation Status
MSS – Master Status Bit
ESB – Event Status Byte Summary
MAV – Message Available
QUES – Questionable Status Summary bit
ERR – Error Queue Bit
Query Syntax: *STB?
Parameters: None
Returned Parameters: <NR1> (register value)
Related Commands: *SRE *ESR *ESE
*TST?
This query causes the ac source to do a self-test and report any errors.
Query Syntax: TST?
Parameters: None










