Keithley 2001 User Manual

Front Panel Operation
3-52
3.5 Range
The selected measurement range affects both the ultimate
resolution and accuracy of the measurements as well as the
maximum signal that can be measured. The range setting
(fixed or auto) for each measurement function is saved when
changing functions.
The following paragraphs discuss range resolution and man-
ual and auto-range operation.
3.5.1 Display resolution
The display resolution of a Model 2001 reading depends on
the selected range and the resolution setting. The default and
maximum display resolutions for every range on each func-
tion are included in the specifications of Appendix A.
You can set the display resolution, as described in paragraph
3.4.
3.5.2 Maximum readings
The full scale readings for every range on each function are
included in the specifications of Appendix A. Input values
more than the maximum reading listed cause the “Overflow”
message to be displayed.
3.5.3 Manual ranging
To select a manual range, simply press the RANGE ▲ or
RANGE ▼ key. The instrument changes one range per key
press. The selected range is displayed on the bottom line of
the display, such as:
+000.0094 mVDC
Range: 200 mVDC
Once the highest or lowest range has been selected, pressing
the corresponding key has no further effect, except for the
display of a momentary informational message, for example:
Range at maximum: 1000 VDC
If the instrument displays the “Overflow” message on a par-
ticular range, select a higher range until an on-range reading
is displayed. Use the lowest range possible without causing
an overflow to ensure best accuracy and resolution.
Note that the frequency and temperature functions have just
one range. For the frequency functions, the RANGE ▲ and
▼ keys increase and decrease the trigger level by 0.5%. On
temperature the keys have no effect.

Keithley 2001 Specifications

General

Brand	Keithley
Model	2001
Category	Multimeter
Language	English