Download Model 6487 Picoammeter/Voltage Source Reference Manual

Model 6487 Reference Manual
Calibration
16-9
Table 16-5
20µA to 20mA range calibration summary
Model 6487 Range Calibrator Currents*
20µA
0µA
+20.00000µA
-20.00000µA
200µA
0µA
+200.0000µA
-200.0000µA
2mA
0mA
+2.000000mA
-2.000000mA
20mA
0mA
+20.00000mA
-20.00000mA
* Calibrate zero, positive full-scale, and negative full-scale
for each range. Triax shielding cap used for zero calibration point for all ranges. See procedure.
Figure 16-1
Connections for 20µA to 20mA range calibration
Coax Cable
INPUT
MADE IN
U.S.A.
CAT I
IEEE-488
ANALOG OUT
(CHANGE IEEE ADDRESS
WITH FRONT PANEL MENU)
DIGITAL I/O
!
505V PK
505V PK
505V PK
TRIGGER LINK
INPUT
RS-232
V-SOURCE OUTPUT
505V PK TO CHASSIS
!
HI INTERLOCK
505V
MAX
120
LO
FUSE
LINE
630mAT
(SB)
100 VAC
120 VAC
315mAT
(SB)
220 VAC
240 VAC
LINE RATING
50, 60Hz
50 VA MAX
Model 6487 Picoammeter
Triax-to-BNC
Adapter
DC Current Calibrator
Dual banana-to-BNC
adapter. Connect
Output LO to shield.
2nA-2µA range calibration
1.
2.
3.
Connect the voltage calibrator and the Model 5156 Electrometer Calibration
Standard to the Model 6487 INPUT jack (Figure 16-2). Initially, make connections
to the 1GΩ resistance.
Set the calibrator to output volts and make sure the calibrator output is turned on.
Select the Model 6487 2nA range.