15-10 Performance Verification Model 6487 Reference Manual
Figure 15-2
Connections for 2nA to 2µA range verification
Voltage source output accuracy
Follow the steps below to verify that Model 6487 voltage source output accuracy is within
specified limits. The test involves setting the voltage source output to specific values and
then verifying that DMM voltage readings are within required limits.
t^okfkd Hazardous voltages will be present during the following procedure.
Use care to avoid a shock hazard. The interlock must be closed to test
the 50V and 500V ranges. See Section 2 for interlock information.
1. With the power off, connect the DMM INPUT terminals to the Model 6487
V-SOURCE OUTPUT jacks (Figure 15-3). Be sure to observe polarity (HI to HI;
LO to LO).
2. Turn on the DMM and Model 6487; allow them to warm up for one hour.
3. Select the DMM DCV function and enable autoranging.
4. Temporarily short the ends of the DMM test leads together, then enable the DMM
REL mode to null offsets. Leave REL enabled for the remainder of the tests.
INPUT
Triax Cable
Connect Calibrator to
100MΩ or 1GΩ Resistor
Link Shield and Chassis
120
LINE RATING
50, 60Hz
50 VA MAX
INPUT
(CHANGE IEEE ADDRESS
WITH FRONT PANEL MENU)
IEEE-488
CAT I
TRIGGER LINK
RS-232
MADE IN
U.S .A .
ANALOG OUT
DIGITAL I/O
505V
MAX
V-SOURCE OUTPUT
505V PK TO CHASSIS
LO HI
INTERLOCK
!
!
FUSE LINE
400mAT
(SB)
100 VAC
120 VAC
200mAT
(SB)
220 VAC
240 VAC
505V PK
505V PK
505V PK
Model 6487 Picoammeter
DC Voltage Calibrator
BNC-to-dual
Banana Plug
Adapter
100G
Ω
100M
Ω
10G
Ω
1G
Ω
1nF
100nF
OUTPUT
Connect
Cable
Shield to
Output LO
Low-noise
Coax Cable
Note:
Model 5156 Calibration Standard
!
To Next Page
Loading...
Need help?
General
