Keithley 3730

Series 3700
System Switch/Multimeter User's Manual Section 3:
Rear Panel
Document Number: 3700S
-900-01 Rev. A / August 2007 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 connectio
n)
25
V EXT
NOTE High Current Pins (10-14) can be used for binning applications or for external relays.
Connecting cables
Use a cable equipped with a standard male DB-25 connector (Keithley Instruments part number
CA-126-1).