10 TEGAM WAY • GENEVA, OHIO 44041 440-466-6100 • FAX 440-466-6110 • www.tegam.com
5-7
Section V – Maintenance and Servicing
Calibration Process
Required Equipment
METER CALIBRATOR:
Range: 0 to 1020 VDC; 0 to 0.306 ADC
Accuracy: VDC, ±0.239% of output; ADC, ±0.072% of output
Suggestion: Fluke 5700A
CURRENT SHUNT:
Range: 0.01
Ω
Accuracy: ±0.072% of value
Suggestion: Guildline 9211A
DIGITAL MULTIMETER:
Range: 0 to 1.5 VDC Agilent
Accuracy: ±0.072% of rdg
Suggestion:
Agilent
3458A
Analog Meter Calibration
1.
Connect the Meter Calibrator OUTPUT HI and LO terminals to AVM-2000 front panel HI and LO
terminals, respectively.
2.
Using AVM-2000 FILTER
▼
▲
buttons, set FILTER: to 2.0 Sec.
3.
Using AVM-2000 RANGE knob, select the first AVM-2000 range listed in the Range column of Table
5.1 and set IMPEDANCE to 10 M
Ω
using the INPUT/M
Ω
button (not required on the 1000 V range).
4.
Manually Zero Range of AVM-2000.
a.
Manual Range Zero of the AVM-2000:
i.
Set the Meter Calibrator for zero VDC and set the OPR/STBY switch to OPR.
ii.
If required, select AVM-2000 IMPEDANCE ZERO function using the OPERATE/ZERO
button.
iii.
Press AVM-2000 INPUT OFFSET knob until a V indication is displayed.
iv.
Adjust AVM-2000 INPUT OFFSET knob for a zero indication on AVM-2000 analog
meter.
v.
Press AVM-2000 OPERATE/ZERO button.
vi.
Adjust AVM-2000 INPUT OFFSET knob for a zero indication on AVM-2000 analog
meter.
vii.
Press AVM-2000 INPUT OFFSET knob until a padlock symbol is displayed in the lower
right of the LCD.
viii.
Set the Meter Calibrator OPR/STBY switch to STBY.
5.
Set the Meter Calibrator for the first positive value listed in the Applied column of Table 5.1 and set
the OPR/STBY switch to OPR.
6.
Edit the Meter Calibrator output amplitude until AVM-2000 analog meter indicates full scale.
7.
The Meter Calibrator must indicate within the corresponding positive values listed in the Limits
column of Table 5.1.
8.
Set the Meter Calibrator OPR/STBY switch to STBY.
