5.1.1 Auto power off (sleep function)
If you leave your MFT-X1 switched on but do not use it, the display will dim after 20 seconds, and after 5 minutes
(default setting) it will automatically turn itself off to avoid wasting battery power. When this happens, you can turn
it back on again by pressing any buttons. If you want to alter the time delay for the display dim or auto power off
settings, or disable it entirely, you can do this in set up. Refer to 15.5.8 Sleep timer on page 81.
The test buttons are located within the rotary knobs. They are coloured red and labelled ‘test’. These buttons are used
to start tests that require manual initiation, and for test-lead nulling (Refer to 7.3 Test lead null on page 29.
The way a TEST button operates a test differs from test to test. This will be either a quick press and release, such as a
Loop Impedance test, or a press and hold, for insulation testing. Refer to the individual test sections below.
Both buttons have the same function and can be used in the same way.
The test button also has capacitive coupling built into the red area. This allows earth fault detection (PE Warning) to
operate when the operator touches the test button during live testing.
5.2 Test inhibit – general inhibits
To help protect you, the instrument user, and to guard against damage to the instrument itself, the MFT-X1 inhibits
testing under certain conditions. The inhibit conditions depend on the type of test you are carrying out. They are
explained at the start of each relevant section.
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MFT-X1
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Operation
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