Display Patterns Test; Upgrading The Firmware - Keithley 2651A Reference Manual

High power system sourcemeter instrument

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Appendix A: Maintenance

Display patterns test

This test lets you verify that each pixel and indicator in the vacuum fluorescent display is working

Perform the following steps to run the display test:

1. If the Model 2651A is in remote mode, press the EXIT (LOCAL) key once to place the instrument

in local mode.

2. Press the MENU key.

3. Navigate through the menus by turning the navigation wheel

key to select the items as follows: DISPLAY > TEST > DISPLAY-TESTS.

4. Turn the navigation wheel

5. To start the display test, press the ENTER key. There are three parts to the display test. Each

time the ENTER key or the navigation wheel

selected. The three parts of the test sequence are as follows:

Checkerboard pattern and the indicators that are on during normal operation

Checkerboard pattern (alternate pixels on) and all the numeric indicators (which are not used) are

Each digit (and adjacent indicators) is sequenced; all of the pixels of the selected digit are on

6. When finished, abort the display test by pressing the EXIT (LOCAL) key. The instrument returns

to the FRONT PANEL TESTS menu. Continue pressing the EXIT (LOCAL) key to back out of the

menu structure.

You can use a USB flash drive to upgrade the firmware.

Disconnect the input and output terminals before you upgrade.

Complete the following steps to upgrade the firmware.

1. From your PC, go to the

download the latest version of firmware from the website.

2. Insert a USB flash drive into the USB port on your PC.

3. Copy the firmware file to the USB flash drive.

4. If the Model 2651A is in remote mode, press the EXIT (LOCAL) key once to place the instrument

in local mode.

Model 2651A High Power System SourceMeter® Instrument Reference Manual

until the DISPLAY-PATTERNS menu item is highlighted.

is pressed, the next part of the test sequence is

Keithley Instruments website

, and then pressing the ENTER

(http://www.keithley.com), and then

2651A-901-01 Rev. A / March 2011