VALHALLA SCIENTIFIC, INC.
2701C PRECISION VOLTAGE STANDARD
CALIBRATION PROCEDURE
_____________________________________________________________
1. General
This section provides general maintenance information and a procedure for calibrating the
2701C. The Model 2701C DC Voltage Calibrator should be calibrated on a routine basis
(every 12 months is recommended) to ensure continued accuracy.
For best results, the 2701C should be warmed-up with the covers in place at the calibration
temperature for at least 2 hours before performing the calibration procedure that follows.
2. Required Test Equipment
The following test equipment is required to calibrate the Model 2701C DC Voltage
Calibrator:
1) A DC voltage measuring device capable of measuring the following ranges:
0
volts
±
0.5
µ
V
0.1
volts
±
0.5
µ
V
1
volt
±
1
µ
V
10
volts
±
10
µ
V
100
volts
±
100
µ
V
1000
volts
±
1mV
2) A high quality low-thermal lead set must be used for maximum accuracy. The
recommended lead set is Valhalla Option SL-48 or its equivalent.
3) If the 2701C is equipped with the optional 120mA output, a 10
Ω
±
0.005% precision
resistor is required. Valhalla lead set “Option C” may be used to connect to the resistor.
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