Remote Digital Output Control; Output Enable - Keithley 2500 User Manual

12-6 Digital I/O Port, Output Enable, and Output Configuration

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
command to set the output lines to L, H, L, H:
:SOUR3:TTL 5
Table 12-1
Digital output line settings
OUT 4
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
L = Low (Gnd)
H = High (>+3V)
* 0-7 in 3-bit mode, which is controlled by CONFIG LIMIT menu (See

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
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com
OUT 3 OUT 2
L L
L L
L H
L H
H L
H L
H H
H H
L L
L L
L H
L H
H L
H L
H H
H H
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.
Models 2500 and 2502 User's Manual
Table 12-1. For example, send the following
Decimal
OUT 1 value*
L 0
H 1
L 2
H 3
L 4
H 5
L 6
H 7
L 8
H 9
L 10
H 11
L 12
H 13
L 14
H 15
Section 11).