How Do I Upgrade The Firmware; How Do I Use The Digital I/O Port; How Do I Trigger Other Instruments; Triggering A Scanner - Keithley 2651A Reference Manual

Section 9: Frequently asked questions (FAQs) Model 2651A High Power System SourceMeter® Instrument Reference Manual
Turning autozero OFF will disable the autozero function and possibly increase measurement speed.
To minimize drift, setting autozero to ONCE will perform an autozero one time (at the time when it is
selected) and then disable the autozero function. For a more detailed discussion of autozero, see the
Autozero (on page 2-22) topic.
To configure autozero from the front panel:
1. Press the CONFIG key, and then select MEAS from the menu.
2. Select AUTO-ZERO, then press the ENTER key or the navigation wheel
3. Select the desired mode (OFF, ONCE, or AUTO), and then press the ENTER key or the
navigation wheel
4. Press the EXIT (LOCAL) key as necessary to return to the normal display.
Refer to the
from a remote interface.

How do I upgrade the firmware?

For information on upgrading the firmware, see

How do I use the Digital I/O port?

For information on the Model 2651A digital I/O port, see

How do I trigger other instruments?

Triggering a scanner

A typical test scenario might call for using the Model 2651A with a scanner to test a number of DUTs
in sequence. A basic example of this uses the Model 2651A digital I/O port to trigger a scanner
(shown in the figure below). In this example, line 1 of the digital I/O port is used as a trigger output
and connected to the scanner mainframe trigger input, and line 2 of the digital I/O port is used as a
trigger input.
9-2
.
Remote command autozero
NOTE
(on page 2-23) topic for details about configuring autozero
Upgrading the firmware
Digital I/O
.
(on page A-4).
(on page 3-83).
2651A-901-01 Rev. A / March 2011