Anritsu MP8931A - Bus Commands; Connecting GPIB Cable; Setting GPIB Address

5.2 GPIB Interface
5-5
5.2.2 Bus commands
Bus command refers to internal communication of interface transmitted
when the bus mode is set to command mode (ATN line is “L”).
Bus commands are listed in the table below.
Table 5.2.2-1 Bus command contents
Bus command Operation
IFC (Interface Clear) Puts the IFC line to active status for
approx. 100 µs to initialize interface
functions of all devices connected to the
GPIB bus line.
DCL (Device Clear) Initializes message exchange of all de-
vices on the GPIB interface.
SDC (Selected Device Clear) Initializes message exchange of the
specified device.
5.2.3 Connecting GPIB cable
Connect the GPIB cable connector to the connector on the rear panel.
System using GPIB interface has restrictions shown at right side of the
figure below.
Connect devices following the conditions shown below.
Number of connecting devices:

15
Total cable length:  20 m
Inter-device cable length:  4 m
GPIB cable
GPIB connecto
r
Fig. 5.2.3-1 GPIB cable connection diagram
5.2.4 Setting GPIB address
Set GPIB address.
Refer to Section 4.1.2 “Setting GPIB address” for details.