15-8 Performance Verification Model 6485 Instruction Manual
Figure 15-1
Connections for 20
µ
A to 20mA range verification
2nA-2µA range accuracy
1. Connect the voltage calibrator and Model 5156 Electrometer Calibration Standard
to the Model 6485 INPUT jack, as shown in Figure 15-2. Initially, make connec-
tions to the 1GΩ resistor in the calibration standard.
2. Set the Model 6485 to the 2nA range.
3. With zero check enabled, zero correct the instrument then disable zero check.
4. Set the calibrator voltage to 0.0000V and make sure the output is turned on.
5. Enable the Model 6485 REL mode. Leave REL enabled for the remainder of the
test.
Table 15-2
Reading limits for 20
µ
A to 20mA ranges
Model 6485
Range
Calibrator
Current
Model 6485 Current Reading Limits
(1 Year, 18˚C-28˚C)
20µA 20.0000µA 19.9790 to 20.0210µA
200µA 200.000µA 199.790 to 200.210µA
2mA 2.00000mA 1.99790 to 2.00210mA
20mA 20.0000mA 19.9790 to 20.0210mA
120
FUSE LINE
630mA
LINE RATING
50, 60Hz
30 VA
T
(SB)
100 VAC
120 VAC
315mAT
(SB)
220 VAC
240 VAC
!
INPUT
INPUT
C
O
M
M
O
N
!
42V PK
220V PK
MADE IN
U.S.A.
(CHANGE IEEE ADDRESS
WITH FRONT PANEL MENU)
IEEE-488
CAT
TRIGGER LINK
RS-232
ANALOG OUT
INPUT
Model 6485 Picoammeter
DC Current Calibrator
BNC-to-dual
Banana Plug
Adapter (Connect
Cable Shield to
Output LO)
Low-noise Coax BNC Cable
To Next Page
Loading...
Need help?
General
