10
VT8-600_1000-en-US_AA 10/18
5.5 Test Lead Considerations
Test lead probe covers can be removed for CAT II 1000V installations. Use the test lead probe
covers for CAT III 1000V and CAT III 600V installations. Do not measure voltages > 1000V AC/DC
(VT8-1000) or > 600V AC/DC (VT8-600). Remove the storage caps from the meter end of the test
leads before connecting the test leads to the meter.
5.6 Voltage Measurement Warnings and Cautions
WARNING:
Remove the test lead probe covers for CAT II 1000V installations. Use the test lead probe covers
for CAT III 1000V and CAT III 600V installations.
Do not measure voltages > 1000V AC/DC (VT8-1000) or 600V AC/DC (VT8-600).
CAUTION: When connecting the test leads to the circuit or device under test, connect the
black lead before the red; when removing the test leads, remove the red before the black lead.
Disconnect probes and circuit under test after all measurements are completed.
5.7 AC/DC Voltage Measurements
1.
Insert the black test lead banana plug into the
negative (COM) jack and the red test lead banana
plug into the positive (V) jack.
2.
Turn the function switch to the position. Use the
MODE button to select AC or DC.
3.
Read the Warning and Caution statements above to
determine whether or not to use the test lead probe
covers.
4.
Touch the test probe tips to the circuit under test.
For DC measurements observe the correct polarity
(red lead to positive, black lead to negative).
5.
Read the digital value shown on the display. The
meter is Auto Ranging and therefore selects the
proper decimal point position. For DC, when the
polarity is reversed, the display will show the (-)
minus sign before the value.
6.
The VT8-1000 is rated for 1000VAC/DC and the VT8-
600 is rated for 600VAC/DC.
Fig 5-1 AC and DC VOLTAGE MEASUREMENTS
