Status Byte Register - Iwatsu VOAC760 Manual

3.3.2

Status byte register

This register allows serial polling via the GPIB system bus or a readout using a  STB? query.
This register is the last stage of the hierarchical status information on this instrument.
This register consists of 8 bits; these bits have the following contents.
This is returned as bit 7 of serial poll or  STB? Query response.
OPS (Bit 7)
This is summary messages of operation event status register.
RQS (Bit 6) When serial polling is executed, a message is returned as bit 6 of the status byte of
serial poll response. A message is generated when other bits in the status byte
register (ESB, MAV,..., MEV) are masked by the service request enable register,
and consequently, the logical sum of all bits is changed from 0 to 1. RQS is cleared
when the logical sum described above is changed from 0 to 1, the power is turned
on, or serial polling is executed.
A message is returned as bit 6 of the  STB? query response. MSS connects the
MSS (Bit 6)
logical sum of all bits when other bits in the status byte register (ESB, MAV,..., MEV)
are masked by the service request enable register.
A message is returned as bit 5 of the serial poll or  STB? query response. This is a
ESB (Bit 5)
summary message connected to the logical sum when the standard event status
register is masked by standard event status register.
A message is returned as bit 4 of the serial poll or  STB? query response. This is a
MAV (Bit 4)
summary message connected to the output queue.
This is returned as bit 3 of serial poll or  STB? Query response.
QES (Bit 3)
This is summary messages of questionable event status register.
(Bit 2) This instrument does not use bit 2 of the status byte register. Bit 2 is always set to 0.
(Bit 1) This instrument does not use bit 1 of the status byte register. Bit 1 is always set to 0.
A message is returned as bit 0 of the serial poll or  STB? query response. This is a
MEV (Bit 0)
summary message connected to the measurement event status register.
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