19-10
Calibration
Amps calibration
20µA-20mA range calibration
1.
Connect the triax shielding cap to the Model 6514 INPUT jack.
2.
Select Model 6514 amps function by pressing the I key, and set the calibrator to output
DC current.
3.
Select Model 6514 20
µ
A range, and make sure the calibrator output is turned on.
4.
Press SHIFT then CAL, then press ENTER at the CAL: RUN prompt. The unit will
prompt for the zero calibration point:
20
µ
A ZERO
5.
Connect the triax shielding cap to the INPUT jack, allow 15 seconds for settling, and
then press ENTER.
6.
Connect the current calibrator to the Model 6514 INPUT jack, as shown in Figure 19-2.
7.
The unit will prompt for the positive full-scale cal point:
+20
µ
A CAL
8.
Press ENTER. The unit will prompt for the positive full-scale current:
20.00000
µ
A
9.
Set the calibrator current to +20.00000
µ
A, then adjust the display to agree with the cal-
ibrator current. Allow 15 seconds for settling.
10.
Press ENTER. The unit will prompt for the negative full-scale calibration point:
-20
µ
A CAL
11.
Press ENTER. Model 6514 will prompt for the negative full-scale calibration current:
-20.00000
µ
A
12.
Set the calibrator output to —20.00000
µ
A, then adjust the display to agree with the cal-
ibrator value. Allow 15 seconds for settling, then press ENTER to complete calibration
of the present range.
13.
Press EXIT to return to normal display.
14.
Repeat steps 1 through 13 for the 200
µ
A through 20mA ranges using Table 19-4 as a
guide.
RS232
DIGITAL I/O
PREAMP
250V PK
2V
OUTPUT
COMMON
CHASSIS
120
FUSE
LINE
630mA
LINE RATING
50, 60Hz
60 VA MAX
T
(SB)
100 VAC
120 VAC
315mAT
(SB)
220 VAC
240 VAC
INPUT 250V PK
IEEE-488
(CHANGE IEEE
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
OUTPUT
COM
Triax-to-BNC Adapter
Model 6514 Electrometer
DC Current Calibrator
BNC-to-dual
Banana Plug
Adapter (Connect
Cable Shield to
Output LO)
Low-noise Coax BNC Cable
Figure 19-2
Connections
for 20µA-
20mA range
calibration
Summary of Contents for 6514
Page 203: ...14 CommonCommands...
Page 207: ...15 SCPISignalOriented MeasurementCommands...
Page 235: ...18 PerformanceVerification...
Page 254: ...19 Calibration...
Page 274: ...20 RoutineMaintenance...
Page 278: ...A Specifications...
Page 282: ...B StatusandErrorMessages...
Page 288: ...C GeneralMeasurement Considerations...
Page 294: ...D DDCEmulationCommands...
Page 299: ...E ExamplePrograms...
Page 306: ...F IEEE 488BusOverview...
Page 320: ...G IEEE 488andSCPI ConformanceInformation...
Page 324: ...H CalibrationOptions...