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Series 3700 System Switch/Multimeter User's Manual
Section 3: Rear Panel
3700S-900-01 Rev. C / July 2008
3-3
Digital I/O port
The Series 3700 has a digital input/output port that can be used to control
external digital circuitry. For example, a handler that is used to perform binning
operations can be used with a Digital I/O port. The Digital I/O port is a standard
female DB-25 connector.
Figure 3-2: Digital I/O port
Pin
Description
1
...
9
Digital I/O #1
...
Digital I/O #9
10
...
14
Digital I/O #10 (High Current Pins see Note)
...
Digital I/O #14 (High Current Pins see Note)
15-21
Ground
22
V EXT
23
V EXT
24
NC (no connection)
25
V EXT
NOTE
High Current Pins (10-14) can be used for binning applications or for
external relays.