Giga-tronics 8003, Руководство по эксплуатации

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Remote Operation
Manual 20791, Rev. C, June 2001 3-71
3.3.32.2 488.2 External Status
The 8003 supports the IEEE 488.2 1988 definition of the External Status Register. This status message is
returned in response to an external status register query. The command for this is *ESR? and is defined
as a command verb. Please see the Common Structure in Section 3.3.1 for a more detailed description of
VERB. The status message is coded as follows:
To read the external status register, the host computer first sends the *ESR? VERB and then talk
addresses the 8003. After the register has been read, it is cleared.
3.3.33 GPIB/PRIVATE Interface
Programming commands, controller command bytes, various data, and SRQs can be passed through the
8003 from the controller to instruments connected to the 8003’s GPIB/PRIVATE interface port,
located on the rear panel. This is accomplished by first sending the pass through command
PT d, where
d is the decimal address of the GPIB/SYSTEM interface. Subsequent addressing of the GPIB/SYSTEM
interface will pass through commands to the selected device. The PT d command can be sent at any
time. The default addresses for pass through commands are as follows:
The next section explains how to pass through commands to instruments connected to the 8003 GPIB/
PRIVATE interface.
most significant bit(15): not used
bit(14): not used
bit(13): not used
bit(12): not used
bit(11): not used
bit(10): not used
bit(9): not used
bit(8): not used
bit(7): Power on flag
bit(6): not used
bit(5): Command error (Syntax error)
bit(4): Execution error (operation error)
bit(3): not used
bit(2): Sampling Sensor Temperature Flag. This bit indicates that the Peak Power Sensor
(when used with the instrument) has changed temperature by more than
±
5 °C
since its last calibration, and should be recalibrated for maximum accuracy. The
indication will be returned as 0 if the temperature is within range, or as 1 if out of
range.
bit(1): not used
bit(0): Operation complete (Data ready flag/calibration complete)
8003 GPIB/SYSTEM Interface: 4 decimal
Source: 20 decimal
Plotter: 05 decimal
Printer: 01 decimal