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12-8 Digital I/O Port, Output Enable, and Output Configuration Models 2500 and 2502 User’s Manual

Front panel output conﬁguration

The output is conﬁgured from the CONFIGURE OUTPUT menu and is structured as fol-

lows. Note that bullets indicate the primary items of the sweep menu, while dashes indi-

cate options. Use Section 1, “Rules to navigate menus,” to check and/or change operate

options.

Conﬁgure OUTPUT menu

Press CONFIG and then ON/OFF OUTPUT to display the menu, which is also shown in

Figure 12-5.

• AUTO-OFF — Use to ENABLE or DISABLE auto output off. With ENABLE and

ALWAYS enabled, the OUTPUT will turn off after the measurement phase of every

SDM cycle. The OUTPUT turns back on at the beginning of the next SDM cycle. With

ENABLE and AFTER-TRIG-COUNT, the output will remain on until the trigger

count expires. When disabled, the OUTPUT stays on as long as the Model 2500 is

operating within the trigger model (ARM annunciator on). With the OUTPUT enabled,

pressing the ON/OFF key will disable the OUTPUT and disable auto output off.

• ENABLE — Use to ENABLE or DISABLE the output enable line of the Digital out-

put. This line is used as an output enable for a test ﬁxture. See “Output enable,”

page 12-6.

Figure 12-5

Output conﬁguration menu tree

Config

On/Off

Output

Auto Off

Enable

EnableDisable

Disable

Always

After-Trig-Count

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Keithley 2500 User Manual

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