52
BUSY:
This bit goes high whenever the 1830-C is in auto-ranging mode and is
changing ranges, when the 1830-C is in power-up initialization mode, or
when the meter is performing an auto-calibration.
This bit goes low whenever the above three conditions do not exist.
SERVICE REQUEST:
When the status byte is read by means of a serial poll, this bit is set when
the 1830-C is requesting service.
When the status byte is read by means of the Q? query, this bit will be set if
any bit in the status byte is set and its corresponding bit is set in the
Service Request Enable Register.
When the SERVICE REQUEST bit changes state from low to high, the 1830-C
automatically asserts a service request <SRQ>.
READ DONE:
This bit goes high when a new reading has been taken by 1830-C that is not
an over-range, or did not saturate the photodetector, and was not taken
while ranging.
This bit is cleared by D? or by the C command.
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