Keithley 2002

IEEE-488 Reference
3-19
Figure 3-13
Trigger Model (IEEE-488 bus operation)
Arm Layer 1
(Arm Layer)
Arm Event
Detection
Control
Source
No
Idle
and
Initiate
No
Yes
:ARM:SOURce IMMediate *
:ARM:SOURce MANual
:ARM:SOURce BUS
:ARM:SOURce EXTernal
:ARM:SOURce TLINk
:ARM:SOURce RTCLock
:ARM:SOURce HOLD
:ARM:TCONfigure:DIRection SOURce
(Source Bypass Enabled)
:ARM:IMMediate
:ARM:SIGNal
Another
Arm
?
Output
Trigger
:ARM:COUNt <n> | INFinite
No
Yes
Arm Layer 2
(Scan Layer)
Scan Event
Detection
No
Yes
:ARM:LAYer2:SOURce IMMediate *
:ARM:LAYer2:SOURce MANual
:ARM:LAYer2:SOURce BUS
:ARM:LAYer2:SOURce TIMer
:ARM:LAYer2:SOURce EXTernal
:ARM:LAYer2:SOURce TLINk
:ARM:LAYer2:SOURce HOLD
:ARM:LAYer2:TCONfigure:DIRection SOURce
(Source Bypass Enabled)
:ARM:LAYer2:IMMediate
:ARM:LAYer2:SIGNal
Another
Scan
?
:ARM:LAYer2:COUNt <n> | INFinite
No
Yes
Delay
:ARM:LAYer2:DELay <num>
Measure Event
Detection
No
Yes
:TRIGger:SOURce IMMediate *
:TRIGger:SOURce MANual
:TRIGger:SOURce BUS
:TRIGger:SOURce TIMer
:TRIGger:SOURce EXTernal
:TRIGger:SOURce TLINk
:TRIGger:SOURce HOLD
:TRIGger:TCONfigure:DIRection SOURce
(Source Bypass Enabled)
:TRIGger:IMMediate
:TRIGger:SIGNal
:TRIGger:COUNt <n> | INFinite
:TRIGger:DELay <num>
Device
Action
Output
Trigger
Control
Source
Output
Trigger
Delay
Control
Source
Trigger Layer
(Measure Layer)
Source
Bypass
Enabled
?
Source
Bypass
Enabled
?
Another
Measure
?
Yes
:INIT [:IMM]
or
:INIT:CONT ON
?
Yes
No
Yes
:INIT [:IMM]
or
:INIT:CONT ON
?
Yes
:ABOrt
*RCL
:SYST:PRES
* : SYSTem : PRESet and * RST default