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1-18
Performance Verification
Resistance measurement accuracy
Use the following steps to verify that Model 2425 resistance measurement accuracy is
within specified limits. This procedure involves applying accurate resistances from a
resistance calibrator and then verifying that Model 2425 resistance measurements are
within required limits.
CAUTION
Before testing the 2
Ω
and 20
Ω
ranges, make sure your resistance cali-
brator can safely handle the default test currents for those ranges (see
Model 2425 and calibrator specifications). If not, use the CONFIG
OHMS menu to select the MANUAL source mode, then set the source
current to an appropriate safe value. When using the manual source
mode, total resistance reading uncertainty includes both Source I and
Measure V uncertainty (see specifications), and calculated reading
limits should take the additional uncertainty into account.
1. With the power off, connect the resistance calibrator to the Model 2425 INPUT/
OUTPUT and 4-WIRE SENSE jacks, as shown in Figure 1-4. Be sure to use the
4-wire connections as shown.
Figure 1-4
Connections for resistance accuracy verification
Model 2425
2425 100 W SourceMeter
250V
PEAK
5V
PEAK
HI
LO
OUTPUT
125V
PEAK
125V
PEAK
EDIT
TOGGLE
POWER
RANGE
INPUT/
OUTPUT
4- WIRE
SENSE
DISPLAY
ON/OFF
TERMINALS
FRONT/
REAR
AUTO
RANGE
!
®
EXIT
ENTER
CONFIG MENU
SWEEP
TRIG
REL
LOCAL
FILTER
LIMIT
DIGITS SPEED
V
Ω
MEAS
I
FCTN
V
I
SOURCE
2
3
0
1
6
7
8
9
4
+/-
5
STORE RECALL
EDIT
Resistance Calibrator
Output HI
Sense HI
Output LO
Sense LO
Содержание SourceMeter 2425
Страница 1: ...Model 2425100W SourceMeter Service Manual A G R E A T E R M E A S U R E O F C O N F I D E N C E...
Страница 3: ...TAIWAN 1FL 85 Po Ai Street Hsinchu Taiwan R O C 886 3 572 9077 Fax 886 3 572 9031...
Страница 15: ......
Страница 16: ...1 PerformanceVerification...
Страница 35: ...1 20 Performance Verification Model 2425 Service Manual...
Страница 36: ...2 Calibration...
Страница 62: ...3 RoutineMaintenance...
Страница 65: ...3 4 Routine Maintenance Model 2425 Service Manual...
Страница 66: ...4 Troubleshooting...
Страница 84: ...5 Disassembly...
Страница 92: ...6 ReplacementParts...
Страница 113: ...6 22 Replacement Parts Model 2425 Service Manual...
Страница 114: ...A Specifications...
Страница 116: ...B CommandReference...
Страница 128: ...C CalibrationPrograms...
Страница 139: ......
Страница 141: ......