Keithley 2461 Reference Manual

Model 2461
Interactive SourceMeter® Instrument Reference Manual Section 8:
TSP command reference
2461-901-01 A/November 2015 8-245
trigger.digout[N].logic
This attribute sets the output logic of the trigger event generator to positive or negative for the specified line.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (RW) Yes
Restore configuration
Instrument reset
Power cycle
Digital I/O trigger N reset
Configuration script trigger.LOGIC_NEGATIVE
Usage
logicType = trigger.digout[N].logic
trigger.digout[N].logic = logicType
logicType
The output logic of the trigger generator:
• Assert a TTL-high pulse for output: trigger.LOGIC_POSITIVE
•
Assert a TTL-low pulse for output: trigger.LOGIC_NEGATIVE
N
Digital I/O trigger line (1 to 6)
Details
This attribute controls the logic that the output trigger generator uses on the given trigger line.
The output state of the digital I/O line is controlled by the trigger logic, and the user-specified output
state of the line is ignored.
Example
digio.line[4].mode = digio.MODE_TRIGGER_OUT
trigger.digout[4].logic = trigger.LOGIC_NEGATIVE
Sets line 4 mode to be a trigger output
and sets the output logic of the trigger
event generator to negative (asserts a
low pulse).
Also see
digio.line[N].mode (on page 8-50)
digio.line[N].reset() (on page 8-52)
Digital I/O port configuration (on page 3-87)
trigger.digout[N].pulsewidth
This attribute describes the length of time that the trigger line is asserted for output triggers.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (RW) Yes
Restore configuration
Instrument reset
Power cycle
Digital I/O trigger N reset
Configuration script
10e-6 (10 µs)
Usage
width = trigger.digout[N].pulsewidth
trigger.digout[N].pulsewidth = width
width
The pulse width (0 to 100 ks)
N
Digital I/O trigger line (1 to 6)

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