Global Specialties PRO-1000 - Manual User Manual

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(3) Set the range switch to the desired current range. For unknown current measurements, always
start from highest range and move down to lower range to select scale for the best readings.
(4) Connect the probe tips in series with the current source to be measured.
(5) Read current value on the display.

Fuse Replacement:
 Disconnect and remove all connections from any live power source.
 Open the top case.
 Locate the defective fuse on-board and remove it.
 Install a new fuse of the SAME SIZE AND RATING.
 Close the top case.

** 10A AC/DC Measurement -

“Maximum 30sec for each 15 minute interval”

3-3 Resistance Measurement
Resistance is the hindrance of current flow through a conductor. Ohms are the unit of measure for
this resistance.

 The resistance displayed on the meter is the total resistance through all possible paths between

the red and black probes.

 Resistance must always be measured with meter in series with the circuit.
 Resistance in each test lead is about 0.1 - 0.2 ohm
 Be sure that the contact between the probes and the circuit is clean. Contact resistance coming

from dirt, oil, paint, etc. can seriously affect measurement accuracy.

CAUTION

IF AN EXTERNAL VOLTAGE IS PRESENT ACROSS A COMPONENT, IT WILL CAUSE
ERRONEOUS RESISTANCE READINGS. THEREFOR ALL RESISTANCE MEASUREMENTS
SHOULD BE TAKEN ON DE-ENERGIZED CIRCUITS ONLY. POWER TO THE CIRCUIT UNDER
TEST MUST BE OFF AND ALL CAPACITORS SHOULD BE DISCHARGED

(1) Plug the red and black test leads into the V input and the COM input terminals respectively.
(2) Set the range switch to the desired resistance range.
(3) Connect the probe tips in series with the resistance to be measured.
(4) Read the resistance value on the display.

3-4 Diode Measurement
Diodes allows current to flow in one direction only. To test a single diode, turn the power off and
remove the diode from circuit.
(1) Connect the red probe to the plus (+) side of diode and the black probe to the minus (-) side.
(2) If diode is good, the voltage drop will be displayed, for example 300.0 ~ 800.0