F.W. Bell 8000 series, Инструкция по эксплуатации

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F.W. BELL 8000 Series Gauss/Tesla Meter Instruction Manual
Section 8 – Remote Operation 8-15
Status Byte
and Service
Request (SRQ)
(continued) OSB - Operation Summary Bit:
If any of the bits in the OPERATION EVENT register set, and their respective
enable bits are set, the Operation Summary Bit (OSB) will set.
ESB - Event Summary Bit:
If any of the bits in the STANDARD EVENT register set, and their respective
enable bits are set, the Event Summary Bit (ESB) will set.
QSB - Questionable Summary Bit:
If any of the bits in the QUESTIONABLE EVENT register set, and their
respective enable bits are set, the Questionable Summary Bit (QSB) will set.
MSB - Measurement Summary Bit:
If any of the bits in the MEASUREMENT EVENT register set, and their
respective enable bits are set, the Measurement Summary Bit (MSB) will set.
MAV - Message Available:
This bit is always set. Because the GPIB to USB controller only has an output
message queue of one, each time the serial interface gets a command that
requires a response that is sent immediately with out using an output queue.
EAV - Error Available:
This bit sets any time there is an error message available in the error queue.
RSQ - Request For Service:
If any of the other bits in the STATUS BYTE are set, and their respective
enable bits are set in the SRQ ENABLE register, the Request For Service
(RQS) will set, causing the SRQ interface line to be asserted if using the
IEEE-488 bus.
Error Queue
Errors can be generated from a variety of sources, such as hardware errors,
system diagnostic errors, probe configuration errors, or errors in the SCPI
command syntax. As these errors occur they are stored in an internal error
queue that will hold the latest 25 errors.
These errors can be read out and delete using specific SCPI commands
discussed later in the next sections.