AEMC instruments OX5042 User manual

1
Model OX5042 Handscope
Instructions for General Electrical
Measurements
First-Time Setup
1. Turn the instrument ON.
2. Press Scope Mode .
3. Press Channel A . The main menu appears as follows at the bottom of the
screen (default settings):
4. Press Channel B .
5. Press the right navigation key until the Multiplier field is highlighted. By
default this is set to x1.
6. Press the down navigation key until the x1000 setting is highlighted.
7. Press Enter to save the setting.
8. Press to highlight the Units field.
9. Press to highlight the Asetting.
10. Press to save the setting. The main menu now appears as follows:
NOTE: These settings will remain in effect (even if the instrument batteries are
drained or removed) until changed by the user.
11. Apply the voltage to be measured to Channel A and current to Channel B.
12. Press the Auto Set button to properly scale the measurements.
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AC Voltage Measurement
1. Attach the BNC adapter (shown on right) to the Channel A input.
2. Attach the 10’ black and red leads to the adapter.
3. Select the alligator or pencil tip probes and attach them to the
leads as needed.
4. Attach the test leads to the measurement point.
5. Turn the instrument ON.
6. Press Scope Mode .
7. Press Channel A . Verify that the main menu appears as follows:
8. Press Meter Mode . The voltage measurement appears on the screen
(see the example below):
9. Press Aand verify that Auto is ON in the menu at the bottom of the
display. If it isn’t, use the right navigation key to highlight Auto then the up or
down navigation key to select ON.
10. The bottom display should appear as follows:
NOTE: If this menu screen is not displayed, press the Meas key.
Then, press the Achannel key to show the menu.
11. Read the voltage and record it: ___________________________
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AC Current Measurement
1. Select the current probe based on the current to be measured:
•MN251T (if in your kit) for measuring from 1 – 200A
•MN379T (if in your kit) for measuring from 0.05 – 120A
•MiniFlex sensor for measuring 10 – 3000A.
2. Attach the current probe to the Channel B input.
3. Clip the current probe around the conductor to be measured.
4. Turn the instrument ON.
5. Press Scope Mode .
6. Press Channel B . Verify the main menu appears as follows:
7. Press Meter Mode . The current measurement appears on the Channel B
display (see the example below):
8. Press Band verify that Auto is ON in the menu at the bottom of the display.
If it isn’t, use the right navigation key to highlight Auto then the up or down
navigation key to select ON.
9. The bottom display appear as follows:
NOTE: If this menu screen is not displayed, press the Meas key. Then,
press the Bchannel key to show the menu.
10. Read the current and record it: ___________________________
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AC Current Harmonics
1. Set up the instrument for current measurement, as instructed by steps 1
through 6 of the “AC Current Measurement” section above.
2. Press Harmonics Mode . The THD (Total Harmonics Distortion) percentage
appears in the upper right corner on the Channel B display (see the example
below):
3. Record the THD percentage: ________________ %
NOTE: If either channel is not connected, an error message appears. To eliminate
the error and clear the message, rapidly press twice the key for the channel
causing the error. This turns OFF the channel, removes the error message, and
displays the THD of the active channel. The channel that is OFF is grayed out. To
re-activate the channel, press its button.
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Millivolt Drop
1. Set up the instrument for voltage measurement, as instructed by steps 1
through 6 of the “AC Voltage Measurement” section on page 2 above.
2. Press Channel A .
3. Move the test leads to each measurement point, and record each millivolt drop:
___________ ___________ ___________
___________ ___________ ___________
___________ ___________ ___________
If applicable, record the completed measurements in your report software.
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