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Calibration Item
Output
DCA 20mA
DCA 20mA
Measure
ment
DCV 28V
Ambient Condition for Calibration
Ambient temperature: 23℃±1℃;
Relative humidity: 45 to 75% RH;
Preheating: standard instrument should be
preheated to specified time;
Put this Instrument in calibration environment for 24
hours, then connect to the power, and set it in non auto-
power-off state, and preheat for half an hour.
Power supply for calibrator: during the calibration, it
is recommendable to use 2 1.5V（LR6）batteries.
Operating Output Calibration
Operating calibration in order of items and calibration
points listed in Table 10-2:
Standard
Output Range
Equipment
Digit meter
MAX.22 mA
Standard
MAX.33mA
source
Standard
MAX.33V
source
Note
Accuracy
±（50ppm＋0.4uA）
±（100ppm＋0.2uA）
±（12ppm＋15uV）
Table 10-2
Item
Output Range
No.
1
1)
In power-off state, press the keys 〔 OUTPUT / INPUT〕
and 〔 power 〕 simultaneously to power on, and
release the〔OUTPUT / INPUT〕key only after the
LCD displays all the contents. The Instrument
enters into the calibration mode, and the symbols
'CAL 0' appear in the LCD;
2)
Press the key 〔OUTPUT / INPUT〕 to select output
function , and the LCD displays 'OUTPUT ','mA ';
- 13 -
Recommended
Digit meter:KEITHLEY 2000
Standard resistance:BZ10-100Ω
5520 (FLUKE) or equivalent
Calibration Point
0
DCA/20mA
0 FS
FS
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