3-6
6517B-900-01 Rev. A / Jun 2008
Section 3: Basic Measurements
Model 6517B Electrometer User’s Manual
Figure 3-3
Resistance measurements
Auto V-Source
With Auto V-Source selected, the V-Source is automatically set for either 40V or 400V. For the
2M
Ω
through 200G
Ω
ranges, the V-Source is set to 40V. For the 2T
Ω
through 200T
Ω
ranges, a
400V test voltage is used. With Manual V-Source selected, you can manually set the voltage level
of the V-Source.
Perform the following steps to select the V-Source mode for the ohms function:
1.
Press
CONFIG
and then
R
to display the ohms configuration menu.
2.
Use the and keys to place the cursor (blinking menu item) on
VSOURCE
and press
ENTER
.
3.
Place the cursor on
AUTO
(Auto V-Source ohms) or on
MANUAL
(Manual V-Source ohms)
and press
ENTER
.
4.
Use
the
EXIT
key to back out of the menu.
Amps Rel
Amps Rel is used to cancel leakage current in a test fixture for ohms measurements. This
procedure assumes that steps 1 through 4 of the Resistance Measurements procedure have been
performed. Perform the following steps:
1.
With the V-Source in standby, remove the DUT from the test fixture.
2.
Select
the
Amps (I)
function and disable zero check. Make sure REL is disabled.
Red
Black
6517B
Shield
RX
LO connected
to shield
Triax
Cable
Note: V-Source low internally
connected to electrometer low.
Test fixture
Measured
Resistance
OPTION SLOT
250VDC MAX
MADE IN
U.S.A
LINE RATING
50-60 Hz
100 VA MAX.
LINE
WARNING:
NO INTERNAL OPERATOR SERVICABLE PARTS, SERVICE BY QUALIFIED PERSONNEL ONLY.
CAUTION:
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE FUSE WITH SAME TYPE AND RATING.
1250Vpk
PREAMP
OUT
1000VDC
MAX
FUSE
630mAT
315mAT
100V
120V
220V
240V
COMMON
2V OUT
LO
HI
V SOURCE
TRIGGER LINK
RS-232
DIGITAL I/O
HUMIDITY
TEMP
TYPE K
INTERLOCK
IEEE-488
2VDC MAX
WARNING
Hazardous voltages may be present on the output and guard terminals. To
prevent electrical shock that could cause injury or death, NEVER make or
break connections to the Model 6517B while the output is on. Power off the
equipment from the front panel or disconnect the main power cord from the
rear of the Model 6517B before handling cables connected to the outputs.
Putting the equipment in standby mode does not guarantee that the outputs
are not powered if a hardware or software fault occurs.
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