Keithley 2500 User Manual

12-6 Digital I/O Port, Output Enable, and Output Configuration Models 2500 and 2502 User’s Manual
Remote digital output control
Use the :SOURce3:TTL <NRf> command to control the digital output line logic levels,
where <NRf> is the decimal value shown in Table 12-1. For example, send the following
command to set the output lines to L, H, L, H:
:SOUR3:TTL 5
Output enable
The digital I/O port provides an output enable line for use with a test fixture interlock
switch. When properly used, the voltage source outputs of the Model 2500 will turn OFF
when the lid of the test fixture is opened.
WARNING To prevent electric shock, test connections must be configured such
that the user cannot come in contact with conductors or any DUT that
is in contact with the conductors. Safe installation requires proper
shields, barriers, and grounding to prevent contact with conductors.
Operator protection and safety are the responsibility of the person
installing the product.
Table 12-1
Digital output line settings
OUT 4 OUT 3 OUT 2 OUT 1
Decimal
value*
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
L = Low (Gnd)
H = High (>+3V)
*0-7 in 3-bit mode, which is controlled by CONFIG LIMIT menu (See Section 11).
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
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Keithley 2500 Specifications

General

Brand	Keithley
Model	2500
Category	Measuring Instruments
Language	English