2. Turn the instrument OFF by turning the rotary switch to the
OFF position to deactivate the instrument.
NOTE:
The MTR105 switches off after a period of inactivity,
which is user adjustable,
Refer to 14. Settings on page 71
.
To start the instrument again rotate the mode switch to Off
and then select a mode or press the TEST button to wake the
instrument up.
3.2.3 Power options
Caution: Do not attempt to recharge alkaline or Lithium cells, this action is a high potential fire hazard.
The MTR105 is powered by Internal batteries,
These cells may be used:
6 x LR6 1.5 V Alkaline (AA)
6 x IEC HR6 1.2V NiMH
6 x IEC FR6 1.5 V Lithium (LiFeS2).
The instrument charges using the dc adapter (NiMH cells only), which will work at voltages between 100 and 240 V
ac. Charging will only occur if the battery type is set to NiMh.
Warning: Charge NiMH cells only between 0 ºC and +40 ºC ambient.
The battery cell type is selected from the settings menu,
Refer to 14. Settings on page 71
. It will not charge
Alkaline or LiFeS2 cells.
To charge the cells in the instrument, it has to have the mains charger kit plugged into the terminal connections.
Testing or access the USB is not possible while the instrument is being charged.
See also
Refer to 16. Specifications on page 80
3.3 Lockout Voltage
Before testing, the measurement board will carry out a short a pre-test voltage check. If the lockout voltage is
exceeded, the user will see an overlay menu showing the current voltage measured. The overlay will disappear if the
voltage is lowered below the lockout voltage threshold.
The lockout voltage is active on all test modes. It is hard-coded to activate at 20 V. The only exception is the
insulation resistance tests, where the lockout voltage can be set in the settings (as 20 V, 30 V, 50 V or 75 V).
Instrument Set up
12
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