Keithley 486 Quick Reference Manual page 17

Preset
PRESET
Preset allows the V-Source to be toggled between two
preset values.
To preset a V-Source level:
1.
2.
3.
4.
Enable preset by pressing PRESET. Indicator wljl
turn on.
Adjust the V-Source to the desired range and level.
Disable preset by again pressing PRESET.
Whenever preset is enabled, V-Source will adjust
to the value and range set in step 2.
I-Limit
The V-Source has current limit (l-limit) capabilities to pro-
tect the instrument and external current sensitive circuitry
from possible damage. The V-Source can be set for an
l-limit of 25pA or 2.5mA.
When l-limit occurs, the OPERATE indicator will flash.
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