Trigger Link; Input Trigger Requirements; Figure 10-2 Rear Panel Pinout; Figure 10-3 Trigger Link Input Pulse Specifications - Keithley 2500 User Manual

10-8 Triggering

Trigger link

Input and output triggers are received and sent via the rear panel TRIGGER LINK connec-
tor. The trigger link has four lines. At the factory, line #2 is selected for output triggers,
and line #1 is selected for input triggers. These input/output line assignments can be
changed from the CONFIGURE TRIGGER menu. See
page 10-14. The connector pinout is shown in
Figure 10-2
Rear panel pinout
Rear Panel Pinout
8
5

Input trigger requirements

An input trigger is used to satisfy event detection for a trigger model layer that is config-
ured for the TRIGGER LINK event. See
input requires a falling-edge, TTL compatible pulse with the specifications shown in
Figure
Figure 10-3
Trigger link input pulse specifications
TTL High
(2V-5V)
TTL Low
(-0.8V)
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
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6
7
4 3
2 1
10-3.
Triggers on
Leading Edge
10µs
Minumum
Models 2500 and 2502 User's Manual
"Configuring triggering,"
Figure 10-2.
Pin Number
Description
1 Trigger Link 1
2 Trigger Link 2
3 Trigger Link 3
4 Trigger Link 4
5 Trigger Link 5
6 Trigger Link 6
7 Ground
8 Ground
"Trigger model (front panel operation)." The