Anritsu MP1777A Initializing Bus, Appendix B Details of Initialization Command Functions

Appendix B Details of Initialization Command Functions

B.l Initializing Bus

IFC:Initializes functions of all the devices connected the GPIB bus line, when the GPIB option is mounted.

Initialization of the interface function refers to an action of canceling the status of the interface function of the device set by the controller and returning it to the initial status. Each function inarked with a check mark (4)in the table is initialized. The function marked with a delta (A) means that the function will be partially initialized. This command has no effects on the operation status of the device.

Table B-1 Changes in Status of Interface Functions by IFC Message

I	No.	/	Function
I	I	I	Source handshake	1
1	2	1	Acceptor handshake	1
1	3	1	Talker or extens~ontalker	1

4Listener or extension listener

5Service request

1 6 1 Remote local 1

7Parallel port

8Device clear

9Device trigger

10 Controlle

Cord		Initialization bv IFC	1
SH	1	d	I
AH	1	V	I
T o r T E	1	\I	I
L or LT		v
SR	1	A	I
RL
PP
DC
DT
C		d

The following table shows changes in status of the device by the IFC message.

	Table B-2 Changes in Status of Device by IFC Message
	--
IFC Message	Changes in Status of Device
TalkerListener	All the talkers and listeners switch into the idle state (TIDS and LIDS) within 100 ps.
Controller	Unless the controller is active (SACS: System control Active State), the controller switches
	into the idle state (CIDS: Control IDle State) within 100 ps.

Device of service request Although the state where the device is sending an SRQ message to the controller (state where the SRQ line is set by the device to the LOW level) is not canceled, the message cancels the state where the controller have all the devices under the system bus in the serial pole mode.

- -

D e v ~ c eIn remote mode Dev~cescurrently In the remote mode will not be released from the remote inode by the IFC me\sage.