Table of Contents
Advertisement
STB6684/A Operation Manual
8.2.2 GPIB interface capability
The following table provides the intrument's GPIB capabilities and functions.
Code
SH1
Complete Data Source Handshake capability
AH1
Complete Acceptor Handshake capability
T6
Basic Talker; Talk-Only; Unaddressed if MLA; no serial poll.
L4
Basic Listener; Unaddressed if MTA; no Listen Only.
RL1
Remote/Local capability
DC1
Device Clear capability
DT1
Device Trigger capability
C0
No controller capability
E1
Drivers are open-collector
8.2.3 GPIB addressing
The addressing mode provided by STB8882AS is single address. STB6684/STB6684A is shipped
from the factory with a GPIB address of 8. User can set the address to a value of 0 to 30 and the
address is saved in the non-volatile memory.
8.2.4 GPIB bus commands
STB6684/STB6684A series insulation resistance tester will respond to the following bus commands:
ABORT I/O (IFC)
Stop the bus working. Don't receive the instrument information, and reset the interface to
the idle state.
CLEAR LOCKOUT/SET LOCAL
Control the instrument. The instrument can work at a remote place.
DEVICE CLEAR (SDC or DCL)
Clear the selected instruments or all the instruments.
LOCAL (GTL)
Return the local control.
LOCAL LOCKOUT (LLO)
Lock the local command. When the remote instrument receives this command, the local
command will be locked.
REMOTE
Set the instrument to remote mode.
SPOLL
The SPOLL (serial poll) command is used to set the bus address status byte. 8 bytes are
used to shield, read and judge the instrument operating status.
SERVICE REQUEST
When STB6684/STB6684A requires the controller to execute a task, it will send out a
SRQ service request control signal. SRQ, deemed as an interruption, will inform the
controller
Table 7-4 GPIB general functions
Function
◇ 94
Chapter 8 Remote Control
Advertisement
Table of Contents
