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Model 2450-TLINK
Keithley Instruments, Inc.
28775 Aurora Road
Trigger Link Cable
Cleveland, Ohio 44139
1-888-KEITHLEY
http://www.keithley.com
Description
Use the Model 2450-TLINK cable to connect the Model 2450 digital I/O port to an 8-pin micro DIN type trigger link
connector (TLINK).
Figure 1: Model 2450-TLINK cable
The item shipped may vary from model pictured here.
Do not exceed the voltage rating for this cable. Use this cable only to transfer digital I/O
information as a trigger link and not to supply power. Make sure neither connection exceeds
the cable's specifications. Failure to follow this warning may result in injury from electrical
shock as well as damage to the equipment.
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Model 2450-TLINK
Characteristics
Length: 36 in. (91.5 cm)
Voltage rating: 42 V (peak)
Maximum current: 1 A
Figure 2: Model 2450-TLINK schematic
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Model 2450-TLINK
Connection instructions
The following figure shows a typical Model 2450-TLINK connection. When connected, you can use any of the six
TLINK lines to send or read TTL signals.
The following connection example controls measurements using TTL LO signals over lines 1 and 2. Configure the
Model 2450 to take measurements when a signal is read on digital I/O port pin 2; configure it to send a signal on
digital I/O port pin 1 when it is finished measuring. Configure the other instrument (the one with the TLINK
connector) to send the start signal on digital I/O port pin 2 and to read the completion signal from digital I/O port
pin 1.
You must configure which measurements the Model 2450 makes when triggered. You must also
configure the TLINK instrument to perform any needed actions before it triggers the Model 2450 and
any subsequent actions after it receives the completion signal.
Refer to the Model 2450 Reference Manual for specific trigger link, trigger model, and digital I/O
information. For configuration of the other instrument, refer its documentation.
Figure 3: Model 2450-TLINK cable connection to Model 2450
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Model 2450-TLINK
Model 2450-TLINK connection pinouts
Trigger link Trigger link Digital I/O pin ** Port description
connector pin
1* Line #1 1 I/O
2* Line #2 2 I/O
3 Line #3 3 I/O
4 Line #4 4 I/O
5 Line #5 6 I/O
6 Line #6 8 I/O
7 Digital common 9 Ground
8 Digital common
* Used in example
** Pin 5 and pin 7 of the Model 2450 digital I/O are not connected
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