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MODEL 1000N
CALIBRATION:
Recommended Cleaning Procedures:
The exterior should be cleaned periodically with a cloth moistened with water and a mild
detergent solution. (Do not use chlorinated solvents or solvents containing hydrocarbons).
Wipe the instrument and let it dry completely before using it again.
NOTE: The adjustment procedures described below should be performed under the following
environmental conditions:
Temperature: 21°C ± 3°C
Humidity: 30 to 60% RH
Required Items:
• 1 DC power source, with adjustable voltage between 8 to 15 V (1 A Max.)
• 1 DC ammeter (minimum range: 0.5 A), with voltage drop less than 0.1 V.
• 1 Voltmeter with 20,000 cts of resolution capable of measuring at least 10 V.
Impedance ≥ 1 M Ω
• 1 Set of resistors 1 M Ω , 100 M Ω , 1000 M Ω , 100 G Ω , 1000 G Ω (accuracy 1% or less,
operating voltage > 1000 V).
• 1 Resistor 100 Ω / 1%
• 1 Resistor 0.1 Ω / 1%
• 1 AC power source, 0 to 600 V 50/60 Hz ± 1%
Calibration Procedures:
a) With the push-to-measure button disengaged, provide 600 V AC between the + terminal
(green) and the - coaxial plug. The reading must be between 582 and 618 V (± 3% fs).
Otherwise consult the troubleshooting section.
b) Remove the bottom portion of the instrument by unscrewing the two center screws when the
push-to-measure button is up, (See section B on page 13). This allows access to the
adjustment potentiometers.
IMPORTANT: This is a high precision instrument. It is very important to keep the printed circuit
boards absolutely clean. Do not touch the circuit boards with fingers and prevent
foreign substances from coming into contact with the boards.
c) Initial Conditions:
Place the potentiometer A1 to the farthest counter-clockwise position.
4/21/2005
REPAIR AND CALIBRATION MANUAL
11
REV. 7: March 13, 2004
FILE LOCATION: Manuals - Cal. Man - 1000MAN.DOC
CAT. #185.100
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