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SELECT
NOTE: Measurements can be adversely affected by impedances of additional operating circuits connected in parallel or
transient currents.
1. Insert test leads into the Zero/Ω and Com input ports.
2. Turn the rotary dial selector to the Zero/Ω position.
3. Short the test leads together. Press the SELECT Button and wait until ZERO appears on the display. The tester measures the
probes resistance, stores the value in memory and subtracts it from tests. The probes resistance is saved even when the tester
is powered off. If the probe resistance is >2Ω, the resistance will not be saved.
4. Connect the test leads to the circuit to be tested. The tester will automatically detect if the circuit is energized.
5. The dashes (----) will display until the TEST Button is pressed and a valid resistance value is detected.
6.The High Voltage symbol will display if greater than 2V AC/DC is present.
If this is happens, the test is corrupted. Disconnect the test leads and remove power before testing again.
7. Press and hold the TEST Button on the Meter or Remote Probe to start the test. The TEST symbol will appear on the display
until the TEST Button is released. The resistance value is displayed until a new test is started or a different function or range
is selected.
Features:
LOCK
TEST
A-HOLD
NOTE: When the resistance is higher than the maximum display range the tester displays the > symbol and the maximum
resistance for the range.
WARNING
NEVER test resistance on a live circuit. (Overload Protection: AC 2V rms or DC)
RANGE
20.00Ω
200.0Ω
2000Ω
20.00kΩ
Earth-bond Resistance
IRT807
IRT807
0
0.1 M
1 M
10 M
100 M
1 G
2 G
M
Apo
Apo
V
DC
Test Voltage
LOCK
SELECT
MIN/MAX
RANGE
A-HOLD
F C
TEST
PI/DAR
Hz
ZERO
Temp
mV
V
kHz
mA
V
SMOOTH
50V
OFF
1000V
SELECT
RESOLUTION
0.01Ω
0.1Ω
1Ω
0.01kΩ
• Default =
• Press x1 = ZERO
ACCURACY
1
±(1.5% +3 dgts)
15
1. Accuracies apply from 0 to 100% of range
2. Open Circuit Test Voltage: > 4.0V, < 8V
3. Short Circuit Current: > 200.0 mA
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