Keithley TEC SourceMeter 2510, Руководство пользователя

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5-6 Digital I/O Port and Output Enable Models 2510 and 2510-AT User’s Manual
Output enable line
The Digital I/O Port provides an output enable line for use with a test fixture activate
switch. When properly used, the OUTPUT of the Model 2510 will turn OFF when the lid
of the test fixture is opened.
Overview
When the output enable line is active (see below), the output of the Model 2510 cannot be
turned on unless the enable line is pulled low through a switch to ground as shown in
Figure 5-4 A. If the lid of the test fixture opens ( Figure 5-4 B), the switch opens, and the
enable line goes high, turning the OUTPUT of the Model 2510 OFF. The output can only
be turned back on by first closing the lid of the test fixture and then pressing the OUTPUT
ON/OFF key.
WARNING The Model 2510 TEC SourceMeter was designed as a general-purpose
instrument, which precludes the use of voltage and/or current barriers.
Therefore, there is no intrinsically safe barrier, including output
enable, in the Model 2510. Even with the output enable feature in use,
it is possible under certain fault conditions (for example with a pro-
gramming error or instrument failure) to present a shock hazard to the
operator or damage devices even when the system appears to be safe
(such as when voltage and/or current conditions are below safety limits
or the output is disabled.) Use appropriate guards, shields, and insula-
tors on external connectors to protect any user or maintenance person-
nel from the risk of electric shock or mechanical injury.
Activating output enable
Output enable can be activated by using the CONFIG OUTPUT menu. Follow these steps
to activate output enable:
1. Press CONFIG then OUTPUT.
2. Select ENABLE, then press ENTER.
3. From the OUTPUT ENABLE menu, choose ENABLE, then press ENTER to acti-
vate the output enable line.
4. Press EXIT to return to normal display.