Results Of "Rt+" And "Rt-" Modes; Auto", Rt+", "Rt-" Faulty Cases - MARTINDALE VR2250 User Instruction Manual

6.1.4. Results of "RT+" and "RT-" modes

if a resistance value
RT+ or RT+ lower than
5Ω
is detected,
instrument emits
double sound signal
indicating the positive
outcome of the test and
displays one
similar to the screen
alongside.
Note:
We recommend that crocodile clips are used to attain a good contact with the
conductor under test. Indeed in this test the instrument gives as final result the
maximum measured value of R+ or R- and using test leads instead of crocodile clips
could give you a faulty result due to a faulty contact between the test leads and
conductor under test.
The displayed result can be stored pressing the SAVE key twice (according to
paragraph 9.1).

6.1.5. "AUTO", RT+", "RT-" faulty cases

If the instrument detects
the External Power
supply adapter
connected to the
instrument will display
the screen along side.
If the terminal voltage is
higher than 15V, the
instrument does not
carry out the test and
displays the screen
alongside for 5 seconds.
LOWΩ
the
1.07Ω
a
219mA
screen
RT+ 0.11Ω TIME: 10s
FUNC CAL
LOWΩ
-.- -Ω
R+
---Ω
---mA
REMOVE POWER
AUTO 0.11Ω
FUNC CAL
LOWΩ
-.- -Ω
R+
-.--Ω
---mA
VOLT IN INPUT
AUTO 0.11Ω
FUNC CAL
Page 18 of 131
Max Resistance value of
05.06.01
R+ or R-.
Test current
Duration of the Test
↑ ↓
05.06.01
Disconnect the External
Power Supply Adapter
R-
---Ω
---mA
05.06.01
ATTENTION: the test was
not performed because of
R-
-.--Ω
voltage at the terminal
---mA
ends.
VR2250