19-20
Calibration
9.
Press ENTER. The unit will prompt you for the calculated current:
DMM RDG: +085.0000nA
Use
,
▲
,
▼
,
, ENTER or EXIT.
10.
Calculate the current from the DMM voltage reading and resistance value, then adjust
the Model 6430 display to agree with the calculated current, and press ENTER.
11.
The unit will once again prompt you as follows:
I-CAL
Press ENTER to 085.00nA
12.
Press ENTER. The unit will prompt you for the calculated current:
DMM RDG: +085.0000nA
Use
,
▲
,
▼
,
, ENTER or EXIT.
13.
Calculate the current, then adjust the Model 6430 display to agree with that value, and
press ENTER.
14.
Repeat steps 4 through 13 for the 10nA - 1pA ranges using the standard resistance val-
ues summarized in Table 19-5.
Step 4: Offset calibration
1.
Disconnect all cables and test leads connected to the Remote PreAmp or mainframe.
However, leave the Remote PreAmp connected to the mainframe REMOTE PreAmp
connector.
2.
Place the triax shielding cap on the Remote PreAmp FORCE jack.
3.
Select OFFSET in the calibration menu, then press ENTER. The unit will display the
following:
PREAMP OFFSET CAL
ALL BYPASS 10uA 1uA 100nA
4.
Select ALL, then press ENTER to calibrate all ranges and the bypass mode. During this
process, the instrument will display the range being calibration. For example:
PREAMP OFFSET CAL
Now calibrating 1 pA Range.
…
Table 19-5
Standard resistance values for 1pA-100nA gain calibration
Range
Standard resistance
1
DMM reading
2
Calibration current
2
100nA
0
10nA
00
1nA
100pA
0
10pA
00
1pA
100M
Ω
00
1G
Ω
0
10G
Ω
100G
Ω
100G
Ω
100G
Ω
00
8.5V
00
8.5V
00
8.5V
00
8.5V
850mV
00
8.5mV
85nA
0
8.5nA
0
0.85nA
85pA
0
8.5pA
0
0.85pA
1
Nominal Model 5156 values. Use actual value when calculating current.
2
Nominal values. Use actual DMM reading and resistance to calculate current: I = V/R
▲
▲
▲
▲
▲
Содержание 6430
Страница 26: ......
Страница 32: ......
Страница 78: ...2 14 Connections ...
Страница 98: ...3 20 Basic Source Measure Operation ...
Страница 138: ...5 30 Source Measure Concepts ...
Страница 156: ...6 18 Range Digits Speed and Filters ...
Страница 168: ...7 12 Relative and Math ...
Страница 176: ...8 8 Data Store ...
Страница 202: ...9 26 Sweep Operation ...
Страница 248: ...11 22 Limit Testing ...
Страница 310: ...16 6 SCPI Signal Oriented Measurement Commands ...
Страница 418: ...17 108 SCPI Command Reference ...
Страница 450: ...18 32 Performance Verification ...
Страница 477: ...A Specifications ...
Страница 489: ...B StatusandErrorMessages ...
Страница 498: ...B 10 Status and Error Messages ...
Страница 499: ...C DataFlow ...
Страница 503: ...D IEEE 488BusOverview ...
Страница 518: ...D 16 IEEE 488 Bus Overview ...
Страница 519: ...E IEEE 488andSCPI ConformanceInformation ...
Страница 523: ...F MeasurementConsiderations ...
Страница 539: ...G GPIB488 1Protocol ...
Страница 557: ......