Anritsu MT8801C - Page 411

Section 6 Initial Settings
6-4
6.3 Initialization for Message Exchange by DCL and
SDC Bus Commands
■ Example
Call ibclr(ud%)
Initializes only the device which is specified by ud% for message exchange (sending
SDC)
■ Explanation
This statement executes initialization for message exchange by all devices or only the
specified device on the GPIB of the specified select code.
■ Items to be initialized for message exchange
The MT8801C by which the DCL or SDC bus command is accepted executes the
following:
[1] Input buffer and Output Queue: Cleared; the MAV bit is also cleared at the same
time.
[2] Purser, Execution Controller, and Response For matter: Reset
[3] Device commands including *RST: Clears all commands that prevent these
commands from executing.
[4] Processing the *OPC command: Puts a device in OCIS (Operation Complete
Command Idle State). As a result, the operation complete bit cannot be set in the
Standard Event Status Register.
[5] Processing the *OPC query: Puts a device in OQIS (Operation Complete Query
Idle State). As a result, the operation complete bit 1 cannot be set in the Output
Queue.
[6] Device function: Puts sections relating to message exchange in an idle state.
The device keeps waiting for a message from a controller.
Note:
The items listed below are not affected even if DCL and SDC bus command
processing is executed:
[1] The current data set or stored in the device
[2] Front panel settings
[3] Other status byte state except MAV bit
[4] Device operation in progress