Audio Precision ATS-2, Начало работы

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GPIB Status LEDs
The six GPIB Status LEDs shown in Figure 28 indicate the current status
of the GPIB bus. When an LED is illuminated, the status indicated is as
follows:
§
SRQ (SRQ interrupt)
The instrument has asserted the SRQ line in order to request service
from the GPIB controller.
§
GPIB
The instrument is under the control of the GPIB interface, set by the
control mode switch. The APIB connector will be driven internally by
the instrument GPIB interface board.
§
TA (Talk Addressed)
The instrument is talk addressed by the GPIB controller.
§
LA (Listen Addressed)
The instrument is listen addressed by the GPIB controller.
§
MAV
The instrument has one or more bytes in the output queue and has
asserted the MAV (Message AVailable) bit in the Status Byte Register.
§
ERR
The instrument has detected an error condition that has not been
reported to the system controller. This LED goes off when the error
condition has been reported in response to the :ERRM? or :ERRS?
error queries.
GPIB Program Message Terminators
When the instrument is addressed as a listener, two program message
terminators (PMT) are supported:
The GPIB Software Development Process Chapter 7: GPIB Configuration
Getting Started with ATS-2 65
ERR
MAV
LA
TA
SRQ
GPIB
GPIB
IEEE-488.2 (GPIB)
4
0
1
2 1 8 16
APIB
ADDRESS
RL1, PP0, DC1, DT1, C0, E2
SH1, AH1, T6, TE0, L4, LE0, SR1,
Figure 28. ATS-2 GPIB Option panel:
Address Switch, Status LEDs and GPIB port.