ADCMT 7461A User Manual

7451A/7461A/7461P Digital Multimeter Operation Manual
8.3 Calibration
8-4
8.3 Calibration
To maintain the measurement accuracy of this instrument, perform calibration at least once a year; warranty
period.
8.3.1 Preparing for Calibration
1. Power supply
Use an AC power supply in a voltage range listed in Table 3-4 and frequency of 50 Hz or 60 Hz.
2. Environment
Perform calibration in following conditions.
Temperature: +23 1C
Humidity: 70% or less
An area free from dust, vibration, wind, and noise
3. Warm-up time
Perform calibration after allowing a warm up time of 60 minutes or more.
Sufficient warm-up time is also required for the instrument used for calibration.
8.3.2 Calibration Standards
Calibration standard
Operation range
Accuracy
7461A/61P 7451A
DC voltage 100 mV - 1000 V 300 mV - 1000 V 7 ppm
AC voltage 1 mVrms - 700 Vrms
1 kHz sinusoidal wave
3 mVrms - 700 Vrms
1 kHz sinusoidal wave
150 ppm
DC current 1 mA - 1 A 3 mA - 300 mA 30 ppm
1 A - 3 A 300 mA - 3 A 100 ppm
AC current 10 Arms - 100 mArms
1 kHz sinusoidal wave
30 Arms - 30 mArms
1 kHz sinusoidal wave
200 ppm
1 Arms - 3 Arms
1 kHz sinusoidal wave
300 mArms - 3 Arms
1 kHz sinusoidal wave
600 ppm
Resistance 10 -1 M 30 -3 M9 ppm
10 M 30 M30 ppm
100 M - 100 ppm
-300 M1000 ppm

ADCMT 7461A Specifications

General

Brand	ADCMT
Model	7461A
Category	Multimeter
Language	English