Keithley 2461 Reference Manual

Model 2461
Interactive SourceMeter® Instrument Reference Manual Section 6:
SCPI command reference
2461-901-01 A/November 2015 6-243
Details
When this command is set to on, the timer performs the delay operation.
When this command is set to off, there is no timer on the delay operation.
You must enable a timer before it can use the delay settings or the alarm configuration. For expected
results from the timer, it is best to disable the timer before changing a timer setting, such as delay or
start seconds.
To use the timer as a simple delay or pulse generator with digital I/O lines, make sure the timer start
time in seconds and fractional seconds is configured for a time in the past. To use the timer as an
alarm, configure the timer start time in seconds and fractional seconds for the desired alarm time.
Example 1
DIG:LINE3:MODE TRIG,OUT
TRIG:DIG3:OUT:STIM TIM2
SYSTem:TIME?
TRIG:TIM2:START:SECONDS <current time> + 60
TRIG:TIM2:STAT ON
To configure timer 2 for an alarm to fire 1 minute
from now and output a pulse on digital I/O line 3,
query to get the current time. Add 60 s to that
value and use that to configure the start
seconds. Enable the timer.
Example 2
*RST
DIG:LINE5:MODE TRIG,OUT
TRIG:DIG5:OUT:STIM TIM3
TRIG:TIM3:DEL 3e-3
TRIG:TIM3:COUNT 5
TRIG:TIM3:STAT ON
Configure timer 3 to generate 5 pulses on digital
I/O line 5 that are 3 ms apart.
Example 3
*RST
DIG:LINE3:MODE TRIG,IN
DIG:LINE5:MODE TRIG,OUT
TRIG:DIG5:OUT:STIM TIM3
TRIG:TIM3:DEL 3e-3
TRIG:TIM3:COUNT 5
TRIG:TIM3:START:STIM DIG3
TRIG:TIM3:STAT ON
Configure timer 3 to generate 5 pulses on digital
I/O line 5 that are 3 ms apart when a digital input
is detected on digital line 3.
Also see
None

Keithley 2461 Specifications

General

Maximum Current	7 A
Power	100 W
Resolution	6.5 digits
Source Measure Unit (SMU)	Yes
DC Voltage	100 V
Maximum Voltage	100 V
Display	5-inch capacitive touchscreen
Connectivity	USB, GPIB
Software	TSP
DC Current	7 A
Current Source Range	0 to 7 A
Voltage Measurement Range	100 mV to 100 V
Current Measurement Range	10 nA to 7 A
Voltage Measurement Resolution	100 nV