7
Performance Tests and Calibration
146
Keysight U1401B User’s and Service Guide
4
Turn the rotary switch to
.
Press
to select duty cycle.
Connect the
Normal Hi-Low
output terminals of the
calibrator to the U1401B input
terminals.
0.1% to 99%
50% @ 50 Hz
@ 5 Vac
0.3%
50% @ 800 Hz
@ 5 Vac
0.3%
5
Turn the rotary switch to
. Connect the
Normal Hi-Low
output terminals and the
AUX
Hi-Low
output terminals of the
calibrator (with a two-cable
stacked configuration) to the
U1401B input terminals.
500
Ω
500
Ω
±0.83
Ω
5 k
Ω
5 k
Ω
±8
Ω
50 k
Ω
50 k
Ω
±80
Ω
500 k
Ω
500 k
Ω
±800
Ω
5 M
Ω
5 M
Ω
±8 k
Ω
50 M
Ω
50 M
Ω
±508 k
Ω
6
Turn the rotary switch to
. Press
to
select DC.
Connect the
AUX Hi-Low
output
terminals of the calibrator to the
U1401B input terminals.
0.05 A
0.045 A
±18.5 µA
0.5 A
0.45 A
±0.185 mA
7
Turn the rotary switch to
. Press
to
select AC.
Connect the
AUX Hi-Low
output
terminals of the calibrator to the
U1401B input terminals.
0.05 A
0.005 A
@ 1 kHz
±50 µA
0.045 A
@ 1 kHz
±0.29 mA
0.5 A
0.05 A
@ 50 Hz
±0.5 mA
0.45 A
@ 60 Hz
±2.9 mA
8
Turn the rotary switch to
. Connect a diode to the U1401B
input terminals in forward bias
position.
2 V
1.9 V
±1.45 mV
9
Turn the rotary switch to
mV
.
Press and hold
for more
than 1 second.
Connect K-type thermocouple
to the U1401B input terminals.
–40 °C to
1372 °C
0 °C
±(Probe
Ac 3
°C)
–40 °F to
2502 °F
32 °F
±(Probe
Ac
6.096 °F)
Table 7-3
Input performance verification tests (continued)
Step
Test Function
Connection to 5520A
Range
5520A output
Error from
nominal 1 year
