Keithley 6517B Reference Manual

Section 5: Measurement options Model 6517B Electrometer Reference Manual
5-4 6517B-901-01 Rev. C / August 2015
Figure 56: V-source (FVMI configuration) - equivalent circuit
Ammeter LO internally connected to V-source LO through METER Connect option of CONFIG V-
source menu.
When the voltage source is connected to a capacitor, the inherent noise of the preamplifier is
amplified. This is expected performance. Adding a series resistance does not decrease the noise.
However, shunting the output of the V-source (LI to LO) with a 0.1 µF capacitor reduces this noise.
Ammeter LO to V-source LO connection
The METER CONNECT option of the CONFIG V-SOURCE menu (see the table in VSource
configuration (on page 5-2)) is used to make or break the internal connection between V-source LO
and ammeter LO and is summarized as follows:
1. From the CONFIG V-SOURCE menu, select METER CONNECT to display the connection
options (on or off).
2. To connect meter LO to V-source LO, place the cursor on the ON option and press ENTER.
Conversely, to disconnect meter LO from V-source LO, place the cursor on OFF and press
ENTER.
3. Use the EXIT key to back out of the menu structure.
Setting voltage source value
The following information covers the V-source display, and explains how to select range and set the
voltage value.
Displaying voltage source value
With the instrument in the normal measurement display state, the programmed voltage source value
is displayed on the right hand side of the secondary display. If in another display state, you can
display the voltage source as follows:
 If a multiple (NEXT) display is currently being displayed, press and hold in the NEXT key (or
PREV key) until the NEXT display state is canceled.
 If you are in a menu structure, use the EXIT key to back out of it.
While in the multiple (NEXT) display state, you can temporarily display the voltage source value by
pressing the VOLTAGE SOURCE up or down key. The voltage source value appears on the
secondary display for three seconds, unless an editing operation is performed (Adjusting voltage
source value (on page 5-5)).

Keithley 6517B Specifications

General

Brand	Keithley
Model	6517B
Category	Measuring Instruments
Language	English