Model 2461 Interactive SourceMeter® Instrument Reference Manual
Section 3: Functions and features
2461-901-01 A/November 2015
3-93
Input characteristics:
•
The falling edge is detected as the external drive pulses the line low, and the internal drive
latches the line low.
Figure 135: Synchronous acceptor input trigger
Output characteristics:
•
In addition to trigger events from other trigger objects, the TSP commands
trigger.digout[
N
].assert()
and
trigger.tsplinkout[
N
].assert()
•
The physical line state does not change until all drives (internal and external) release the line.
•
Action overruns occur if the internal drive is not latched low and a source event is received.
Figure 136: Synchronous acceptor output trigger
Connecting the Model 2461 to a Trigger Link system
Trigger Link (TLINK) is a Keithley Instruments proprietary trigger bus that is available on many
Keithley Instrument products. The Model 2461 supports TLINK systems. You can connect the Model
2461 to a TLINK system using the Model 2450-TLINK Trigger Link Cable. Configure the appropriate
Model 2461 digital I/O lines as open-drain inputs or outputs for compatibility with TLINK.