Agilent Technologies U1271A Service Manual page 32

1 Calibration Procedures
Performance Verification Tests
Table 1-2 Functional Test
Step Test function
[4]
12 Temperature
rotary switch is in the
position, press the
once.
[4] Ensure that the ambient temperature is stable within ±1 ºC. Ensure that the multimeter is placed in a controlled
environment for at least 1 hour before you proceed to ensure that the multimeter's internal reference junction sensor and
input terminal are stabilized at the same environment. Keep the multimeter away from any ventilation exit.
Differences in ambient compensation between the calibrator and multimeter may cause some deviations shown between
the readings of the calibrator and multimeter. Placing the multimeter close to the output terminal of the calibrator will help
reduce this deviation.
Keep the thermocouple test lead as close to the multimeter as possible.
Do not touch the thermocouple test lead after connecting it to the calibrator. Allow the connection to stabilize for at least
another 15 minutes before performing the measurement.
13 DCμA
Turn the rotary switch
to the position.
14 ACμA
While the rotary switch
is in the position, press the
key once.
15 DCmA
Turn the rotary switch
to the position.
16
Range
–200 °C to 1372 °C
While the
key
300 μA
3000 μA
300 μA
3000 μA
30 mA
300 mA
Error from nominal 1 year
5520 output
U1271A
–200 °C ± 3.0 °C
0 °C ±1.0 °C
1372 °C ±14.7 °C
300 μA ±0.65 μA
3000 μA ±6.5 μA
300 μA, 20 Hz
300 μA, 45 Hz ±2.95 μA
300 μA, 65 Hz ±2.95 μA
300 μA, 1 kHz ±2.95 μA
3000 μA, 20 Hz
3000 μA, 45 Hz ±29.5 μA
3000 μA, 65 Hz ±29.5 μA
3000 μA, 1 kHz ±29.5 μA
30 mA ±0.065 mA
300 mA ±0.65 mA
U1271A/U1272A Service Guide
U1272A
± 3.0 °C
±1.0 °C
±14.7 °C
±0.63 μA
±6.3 μA
±2.95 μA
N/A
±2.05 μA
±2.05 μA
±2.95 μA
±29.5 μA
N/A
±20.5 μA
±20.5 μA
±29.5 μA
±0.063 mA
±0.63 mA