Performance Verification 1-3
Line power
The Model 2420 requires a line voltage of 90 to 250V and a line frequency of 50 to 60Hz.
Verification tests must be performed within this range.
Recommended test equipment
Table 1-1 summarizes recommended verification equipment. You can use alternate equipment
as long as that equipment has specifications at least as good as those listed in Table 1-1. Keep in
mind, however, that test equipment uncertainty will add to the uncertainty of each measurement.
Generally, test equipment uncertainty should be at least four times better than corresponding Model
2420 specifications. Table 1-1 lists the specifications of the recommended test equipment, includ-
ing maximum allowable uncertainty for alternate test equipment, which is shown in parentheses.
* 90-day, full-range accuracy specifications of ranges required for various measurement points.
** 90-day, ±5°C specifications of nominal resistance values shown. Use actual values for tests. Maximum uncertainty of
alternate test equipment shown in parentheses.
*** Required for verification of 3A current range. Characterize resistor to ±300ppm or better using recommended DMM
before verifying 3A current measurement range.
Table 1-1
Recommended verification equipment
Description
Manufacturer/Model
Specifications
Digital Multimeter
Hewlett Packard
HP3458A
DC Voltage*
1V:
10V:
100V:
±5.6ppm
±4.3ppm
±6.3ppm
DC Current*
10
µ
A:
100
µ
A:
1mA:
10mA:
100mA:
1A:
±25ppm
±23ppm
±20ppm
±20ppm
±35ppm
±110ppm
Resistance Calibrator
Fluke 5450A
Resistance**
1.9
Ω
:
19
Ω
:
190
Ω
:
1.9k
Ω
:
19k
Ω
:
190k
Ω
:
1.9M
Ω
:
19M
Ω
:
±65ppm (±460ppm)
±23ppm (±280ppm)
±10.5ppm (±230ppm)
±8ppm (±200ppm)
±7.5ppm (±195ppm)
±8.5ppm (±200ppm)
±11.5ppm (±180ppm)
±30ppm (±635ppm)
Precision Resistor***
Isotec RUG-Z-1R00-0.1
1
Ω
, ±0.1%, 100W
Summary of Contents for SourceMeter 3A 2420
Page 2: ...Model 24203A 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...
Page 15: ...1 Performance Verification...
Page 31: ...2 Calibration...
Page 53: ...3 Routine Maintenance...
Page 56: ...3 4 Routine Maintenance...
Page 57: ...4 Troubleshooting...
Page 70: ...4 14 Troubleshooting...
Page 71: ...5 Disassembly...
Page 78: ...5 8 Disassembly...
Page 79: ......
Page 80: ......
Page 81: ......
Page 82: ......
Page 83: ......
Page 84: ...6 Replaceable Parts...
Page 102: ......
Page 103: ......
Page 104: ......
Page 105: ......
Page 106: ......
Page 107: ...A Specifications...
Page 112: ...A 6 Specifications...
Page 113: ...B Command Reference...
Page 124: ...B 12 Command Reference...
Page 125: ...C Calibration Programs...
