Model HF-15B High Frequency Spark Tester
HF-15B Instruction Manual – Page 48
Adjusting the Spark Tester Voltage Monitor
13. Using the UP/DOWN arrows change the voltage display to read “VMON”
14. Press the “R” button. The Fault Count display should show “S.00.0” representing
the set point value.
15. Using the UP/DOWN arrows adjust the output voltage up so that the Fault
Count display shows “S.01.0” for 1kV.
16. Press the “R” button again to return the Fault Count Display to display the
Voltage Monitor Value. If this Value does not match the output voltage value on
the HF-CAL voltmeter, press the “CR” button to change the fault Display to
“*.01.0”.
17. Using the UP/DOWN arrows adjust the reading on the display to match the
match the output voltage value on the HF-CAL voltmeter.
18. Once the Voltage monitor value matches the output voltage value on the HF-
CAL voltmeter, press the “R” button to return the Fault Count Display to read
the set point value “*.01.0”.
19. Repeat these steps until the all calibration values are within tolerance.
20. Once calibration is complete press the “A” button once to exit the Manual
calibration mode.
EVM Calibration Procedure
The EVM has a mirrored area to assist in eliminating errors in reading. The
correct way to read the meter is to move the viewing position (your eye) until
the reflection of the needle in the mirror is directly behind the needle itself, and
observe the needle position on the scale. This eliminates any parallax error that
might result from viewing the meter at a slight angle.
Connecting the EVM
1. Before connecting to the EVM, turn ON the spark tester and adjust the
voltage to 0 using the VOLTAGE ADJUST down arrow button. Turn OFF
the spark tester.
2. With the power to the HF-15B Spark Tester turned off connect the high
voltage input on the EVM to the Spark Tester electrode. Use the
shortest high voltage lead possible. For bead chain and brush
electrodes connect the alligator clip directly to the electrode. For
roller type electrodes you may need to wrap the high voltage roller
with uninsulated wire and connect the alligator clip to the wire.
3. Set the EVM range Selector to the 5kV range. Then Zero the EVM.
Taking Calibration Readings
4. Turn on the HF-15B and adjust the spark tester voltage to 3.00KV.
Record the voltage reading on the EVM.
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