Megger TDR900 - Auto-Power-Off and Tone Generator; Line Voltage Detection

8.3 Enable or disable the auto-power-off mode
You can customize the required default setting between Enable and Disable settings
by pressing t he POW E R button for about 2 seconds during t he button being
depressed, when the Meter will display “ ” in the upper display and “ ” in
the lower display.
If y ou want to dis able the auto- pow er-off mode duri ng y our taki ng
measurements, press the OK but t on.
If you want to enable the auto-power-off mode, press either t he button or the
button, when the Meter will display “ ” replacing “ ” in the lower
display, and then press the OK button to return to the auto-power-off mode.
Fig. 18
Fig. 19
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8.4 Tone Generator mode
The Meter generates an oscillating (810 - 1100 Hz) tone, which is transmi t ted
down the cable under test and can be picked up with a standard tone probe (not
supplied) available in the marketplaces. This facilitates cable tracing. To select
Tone Generator mode, turn the Meter off, then press t he TONE button for more
than 1 second. The message “ ” will appear on the display. To resume
normal operation, press the EXIT button.
8.5 Line Voltage Detection mode
The Meter displays “ ” message and stops operation if line vol t age of the cable
under test exceeds 6.5 V when the Meter is t urned on.
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