Keithley 6514 User Manual

11-2 Digital I/O, Analog Outputs, and External Feedback
Digital I/O port
Model 6517A's Digital I/O port is a male DB-9 connector located on the rear panel. The ports
location and pin designations are shown in Figure 11-1. The four active-low, digital output lines
and one input line are used to control external circuitry.
Typical applications for the digital I/O port include the following:
• Component handler control — When performing limit tests, a component handler can
be used to sort DUT into bins. The digital I/O of Model 6514 serves as the interface
between the limit tests and the component handler. Via the digital input line (pin 6), the
component handler can tell Model 6514 when it is ready for the test. Via the digital out-
put lines, Model 6514 sends digital output patterns to the component handler and tells it
when the test is finished. A digital output pattern determines which bin the DUT belongs
in.
RS232DIGITAL I/O
PREAMP
250V PK
2V
OUTPUT
COMMON CHASSIS
120
FUSE LINE
630mA
LINE RATING
50, 60Hz
60 VA MAX
T
(SB)
100 VAC
120 VAC
315mAT
(SB)
220 VAC
240 VAC
INPUT 250V PK
IEEE-488
(CHANGE IEEE
WITH FRONT PANEL MENU)
TRIGGER LINK
!
!
MADE IN
U.S.A.
V, GUARD
(PROGRAMMABLE)
OFF
ON
GUARD
(FOLLOWS
INPUT)
(INTERNAL)
INPUT PREAMP
10K
PREAMP
OUT
2V
OUTPUT
COM
Model 6514 Electrometer
9876
54321
DIGITAL I/O
1 = Digital Output #1
2 = Digital Output #2
3 = Digital Output #3
4 = Digital Output #4 (EOT*)
5 = VEXT
6 = SOT*
7 = Not Used
8 = Not Used
9 = Digital Ground
*
Start of Test (SOT) and End of Test
(EOT) are used for Limit Tests (see
Section 10).
Figure 11-1
Digital I/O port

Keithley 6514 Specifications

General

Brand	Keithley
Model	6514
Category	Measuring Instruments
Language	English