Agilent Technologies E3633A Operating Manual

Chapter 4 Remote Interface Reference
The SCPI Status Registers
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The Status Byte Summary register is cleared when:
• You execute the *CLS (clear status) command.
• Querying the Standard Event register ( *ESR? command) will clear only bit
5 in the Status Byte summary register.
For example, 24 (8 + 16) is returned when you have queried the status of the
Status Byte register, QUES and MAV conditi ons have occurred.
The Status Byte Enable register (Request Service) is cleared when:
• You execute the *SRE 0 command.
• You turn on the power and have previously configured the power supply
using the
*PSC 1 comm and.
• The enable register will not be cleared at power-on if you have previously
configured the power supply using
*PSC 0 .
Using Service Request (SRQ) and Serial POLL
You must configure your bus controller to respond to the IEEE-488 service
request (SRQ) interrupt to use this capability. Use the Status Byte enable
register (
*SRE comm and) to select which summary bits will set the low-level
IEEE-488 service request signal. When bit 6 (request service) is set in the Status
Byte, an IEE E- 488 service request interrupt message is automaticall y sent to
the bus controller. The bus controller may then poll the instruments on the bus
to identify which one requested service (the instrument with bit 6 set in its
Status Byte).
The request service bit is cleared only by reading the Status Byte using an
IEEE -48 8 se ri a l p o ll or b y re a d in g t h e ev e nt re g i ster whose summa ry b i t is
causing the service request.
To read the Status Byte summ ary register, send the IEEE - 488 serial poll
message. Querying the summ ary register wil l return a decimal value whi ch
corresponds to the binary-weighted sum of the bits set in the register. Serial
poll will automatically clear the “request service” bit in the Status Byte
summary register. No other bits are affected. Performing a serial poll will not
affect instrument throughput.
Caution The IEEE-488 standard does not ensure synchronization between your bus controller
program and the instrument. Use the *OPC? command to guarantee that commands
previously sent to the instrument have completed. Executing a serial poll before a
*RST, *CLS, or other commands have completed can cause previous conditions
to be reported.

Agilent Technologies E3633A Specifications

General

Brand	Agilent Technologies
Model	E3633A
Category	Power Supply
Language	English