Amprobe 38SW-A, User Manual

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4
Measuring DC Voltage See Figure -1-
1. Set the Function Switch to v .
2. If RANGE is displayed, press the RANGE button to enable autoranging.
3. Connect the Test Leads: Red to E , Black to
COM
4. Connect the Test Probes to the circuit test points.
5. Read the display, and, if necessary, correct any overload ( o ) conditions.
Measuring AC + DC Voltage (True rms)See Figure -2- & -3-
See Additional Features to find out the advantages of true rms.
1. Set the Function Switch to
v
.
2. If DC is displayed, press the yellow button to turn on AC+DC .
3. If RANGE is displayed, press the RANGE button to enable autoranging.
4. Connect the Test Leads: Red to E , Black to
COM
5. Connect the Test Probes to the circuit test points.
6. Read the display, and, if necessary, correct any overload ( o ) conditions.
Measuring AC Voltage (True rms) See Figure -2- & -3-
See Additional Features to find out the advantages of true rms.
1. Set the Function Switch to
V
.
2. If dBm is displayed, press the yellow button to turn on AC .
3. If RANGE is displayed, press the RANGE button to enable autoranging.
4. Connect the Test Leads: Red to E , Black to COM
5. Connect the Test Probes to the circuit test points.
6. Read the display, and, if necessary, correct any overload ( o ) conditions.
Preparing for Current Measurements
•
Turn off circuit power before connecting the Test Probes.
•
Allow the meter to cool between measurements, if current measurements
approach or exceeds 10 amps.
•
A warning tone sounds if you connect a test lead to a current input while a
current function is not selected.
•
Open circuit voltage at the measurement point must not exceed 1000 V.
•
Always measure current in series with the load. Never measure current across a
voltage source.