Anritsu MP8931A - Initializing Device

Section 5 Remote Control
5-6
5.2.5 Initializing device
IEEE488.2 standards define system initialization in 3 levels including
bus initialization, message initialization and device initialization.
The MP8931A is in the following status after power-on:

Status at the last power OFF is set.

Input buffer and output queue are cleared.

Syntax analysis field, effective control field and response formatter are
reset.
Table 5.2.5-1 System initialization types
Level Initialization type Description
1 Bus initialization
(IFC function)
Initializes bus by the IFC statement.
Puts the IFC line to active status for approx. 100 µs to ini-
tialize interface functions of all devices connected to the
GPIB bus line.
2 Message initializa-
tion
(DCL and SDC func-
tions)
Initializes message exchange by the DCL or SDC bus
command.
Initializes messages of all or specified devices on the GPIB
interface
Purpose of message exchange is to prepare for transmis-
sion of new command from the controller when the mes-
sage exchange area inside the device is improper to be
controlled from the controller due to execution of other
program, etc., while panel setting status is not required to
be changed.
DCL: Initializes message exchange of all devices on the
GPIB interface.
SDC: Initializes message exchange of the specified device.
3 Device initialization
(*RST function)
Initializes device by the *RST command.
Initializes the device-unique functions regardless of past
use history. (Refer to Appendix B “Initial Value List.”)