GRAPHTEC GL820 - Page 44

GL820-UM-251-9370 5-8
5. INSPECTION AND CHECK PROCEDURES
(6) Input the reference voltage for each range according to the table below, and then check that the level of
measurement is within the rating.
Voltage precision ratings
Range Input voltage Factory Rating (±0.08%) Product Rating (±0.1%)
20 mV +20.000 mV +19.984 mV to +20.016 mV +19.98 mV to +20.02 mV
50 mV +50.000 mV +49.96 mV to +50.04 mV +49.95 mV to +50.05 mV
100 mV +100.00 mV +99.92 mV to +100.08 mV +99.9 mV to +100.1 mV
200 mV +200.00 mV +199.84 mV to +200.16 mV +199.8 mV to +200.2 mV
500 mV +500.00 mV +499.6 mV to +500.4 mV +499.5 mV to +500.5 mV
1 V +1.0000 V +0.9992 V to +1.0008 V +0.999 V to +1.001 V
2 V +2.0000 V +1.9984 V to +2.0016 V +1.998 V to +2.002 V
5 V +5.0000 V +4.996 V to +5.004 V +4.995 V to +5.005 V
10 V +10.0000 V +9.992 V to +10.008 V +9.99 V to +10.01 V
20 V +20.0000V +19.984 V to +20.016 V +19.98 V to +20.02 V
50 V +50.000 V +49.96 V to +50.04 V +49.95 V to +50.05 V
This value will change
when the reference voltage
is input from the voltage
generator.
(7) Press the [START/STOP] key when the input voltage stabilizes.
(8) Wait until the "Finished" message is displayed, and then display the values as shown below.
Message
Conrm that this value is within
the above ratings after data has
been captured.
(9) Repeat steps (1) to (8), and then conrm that each value is within the above ratings.