Performance Verification 18-15
Ohms measurement accuracy
Follow the steps below to verify that Model 6514 ohms function measurement accuracy is
within specified limits. This procedure involves applying accurate resistances from a resistance
calibrator or standard and then verifying that Model 6514 resistance measurements are within
required limits.
WARNING With the ohms function selected, the Model 6514 can output an open-circuit
voltage up to 250V. Place the unit in zero check when leads are not con-
nected.
2kΩ-20MΩ range accuracy
1. Connect the resistance calibrator to Model 6514 INPUT jack, as shown in Figure 18-4.
2. Select Model 6514 ohms function by pressing the Ω key, and set the calibrator to the
resistance function.
3. With zero check enabled, zero correct the instrument, then disable zero check.
4. Output 0Ω from the calibrator, and then press REL.
RS232DIGITAL I/O
PREAMP OUT
250V PK
2V ANALOG
OUTPUT
COMMON CHASSIS
120
FUSE LINE
630mA
LINE RATING
50, 60Hz
60 VA MAX
500V
PEAK
T
(SB)
100 VAC
120 VAC
315mAT
(SB)
220 VAC
240 VAC
INPUT 250V PK
IEEE-488
(CHANGE IEEE ADDRESS
WITH FRONT PANEL MENU)
TRIGGER LINK
!
!
MADE IN
U.S.A.
V, GUARD
(PROGRAMMABLE)
OFF ON
GUARD
(FOLLOWS
INPUT)
(INTERNAL)
INPUT PREAMP
10K
PREAMP
OUT
2V ANALOG
OUTPUT
COM
Input
Triax-to-BNC Adapter
Model 6514 Electrometer
Resistance Calibrator
BNC-to-dual
Banana Plug
Adapter (Connect
Cable Shield to
Output LO)
Calibrator
Output
Low-noise Coax BNC Cable
Figure 18-4
Connections for
ohms verification
(2k
Ω
-20M
Ω
ranges)
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