4)
2V Range, 0.00000C displays.
Adjust the three knobs as required to bring the
output to 0
±
3
µ
V. Enter the adjustment by pressing the STANDBY/OPERATE
key.
5)
20V Range, 00.0000C displays.
Make the required adjustments to bring the output
to 0
±
20
µ
V and enter the change.
6)
120V Range, 000.000C displays.
Make the required adjustments to bring the
output to 0
±
150
µ
V and enter the change.
7)
1200V Range, 0000.00C displays.
Make the required adjustment to bring the
output to 0
±
1.5mV and enter the change. Note: This step is automatically skipped
if the instrument is equipped with Option LNF.
8)
If Option IT-2 is installed, the 2701C proceeds to the 120mA Mode and the display
indicates 000.000C. If this option is not installed or if it will be calibrated
separately, skip this step.
120mA
Mode,
000.000C displays.
Connect the 10
Ω
resistor to the 2701C
OUTPUT terminals. Monitor the voltage drop across the resistor with the voltmeter.
Adjust the 2701C knobs as described above until the voltmeter reads 0
∀
5
µ
V. Enter
the adjustment and remove the connections.
9)
200mV Range, .100000C displays.
Reconnect the voltmeter to the 2701C SENSE
terminals, if required. The knobs are weighted to affect the output as indicated
below:
1 0 0 0 0 0 C
.
0.25 ppm of range
▲
1 0 0 0 0
0 C
.
4 ppm of range
▲
1 0 0 0
0 0 C
.
64 ppm of range
▲
Make the required adjustments to bring the reading on the voltmeter to .1000000
volts
±
0.5
µ
V. Enter the adjustment by pressing the STANDBY/OPERATE key.
10)
2V Range, 1.00000C displays.
Make the required adjustments to bring the output
to 1.000000 volts
±
5
µ
V. Enter the adjustment.
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