Keithley 6517B Reference Manual

Section 2: Getting started Model 6517B Electrometer Reference Manual
2-16 6517B-901-01 Rev. C / August 2015
Zero-centered bar graph
The zero-centered bar graph is a graphical representation of a reading with positive and negative
limits (see figure below). The limits are expressed in a user-selectable percentage of range.
The vertical lines displayed along the bar designate the positive and negative limits, zero, and
halfway to either limit. There are ten full segments between zero and each end, so each full segment
represents 10 % of the limit. When a line at the limit changes to an arrow, the reading exceeds the
programmed range.
Figure 6: Zero-centered bar graph multiple display
The plus and minus percentage of range that is programmed (0.01 - 99.99 %) applies to all functions.
Because of rounding, values greater than 99.5 % are shown as 100 % and, likewise, values greater
than 1 % (such as 1.67 %) are shown rounded to the nearest integer percent.
Perform the following to view or change the plus and minus percentage of range:
1. From a measurement function, press CONFIG and then NEXT or PREV display key. The
following is displayed:
ZERO-BARGRAPH+/-50.00 %
2. Change the percentage by using the cursor keys and the RANGE keys to enter a numeric value
(0.01 -99.99 %). Press ENTER when done.
Maximum and minimum
The maximum and minimum multiple display shows the maximum and minimum readings since the
display was entered (see figure below). The maximum and minimum values are reset by the
following:
 Pressing the present function key.
 Leaving the display by changing function or entering a menu.
The resolution, units, and prefix on the bottom line are the same as shown for top line reading.
Figure 7: Maximum and minimum multiple display
Relative humidity and external temperature
This display provides the relative humidity and the external temperature readings. Note that the
appropriate sensors have to be connected to instrument, and they have to be enabled in order to get
valid readings.

Keithley 6517B Specifications

General

Brand	Keithley
Model	6517B
Category	Measuring Instruments
Language	English