Source <Name>; Timer <N> - Keithley 2002 User Manual

IEEE-488 Reference
3.23.6
Parameters
Query
Description
Program fragment
3.23.7
Parameters
3-154
:SOURce <name>
:ARM[:SEQuence[1]][:LAYer[1]]:SOURce <name>
:ARM[:SEQuence[1]]:LAYer2:SOURce <name>
:TRIGger[:SEQuence[1]]:SOURce <name>
<name> = HOLD
IMMediate
RTCLock
MANual
BUS
TLINk
EXTernal
TIMer
:SOURce? Query programmed control source.
These commands are used to select the event control source for the specified layer. With HOLD
selected, operation stops and waits indefinitely in the specified layer. While in HOLD, operation
can be continued by sending the :IMMediate command or the :SIGNal command. Keep in mind
however, that if the layer count is >1, HOLD is again enforced when operation loops back
around.
With IMMediate selected (do not confuse :SOURce IMMediate with :IMMediate), operation
immediately passes through the specified layer.
A specific event can be used to control operation through a layer. With BUS selected, operation
continues when a GPIB trigger (GET or *TRG) is sent. With TLINk selected, operation contin-
ues when an input trigger via the Trigger Link is received. With EXTernal selected, operation
continues when an External Trigger is received.
A real-time clock event is available for the arm layer (Arm Layer 1). With RTCLock selected,
event detection is satisfied at the programmed date and time allowing operation to continue on
in the Trigger Model. See paragraph 3.23.10 to set the date and time for the RTCLock control
source.
A TIMer event is available for the scan and measure layers. With TIMer selected for the speci-
fied layer, the event occurs at the beginning of the timer interval, and every time it times out. For
example, if the measure layer timer is programmed for a 30 second interval, the first pass
through the measure layer control source occurs immediately. Subsequent scan events will then
occur every 30 seconds. The interval for the timer is set using the :TIMer command.
PRINT #1, "output 16; :trig:sour imm; sour?"
PRINT #1, "enter 16"
:TIMer <n>
:ARM:[SEQuence[1]]:LAYer2:TIMer <n>
:TRIGger:[SEQuence[1]]:TIMer <n>
<n> = 0.001 to 999999.999
DEFault
MINimum
MAXimum
Specify arm event control source
Specify scan event control source
Specify measure event control source
Hold operation in specified layer
Pass operation through specified layer
Select real-time clock as event (Arm Layer 1 only)
Select manual event
Select GPIB trigger as event
Select Trigger Link as event
Select External Triggering as event
Select timer as event (not available for Arm Layer 1).
Set interval for scan layer timer
Set interval for measure layer timer
Specify timer interval in seconds
0.1 second
0.001 second
999999.999 seconds
' Set measure control source
' Get response from 2002