HT instruments HT4012 - Manual (Page 33)

HT4012
EN - 8
4.2. FUNCTION KEY DESCRIPTION
4.2.1. R-H key: range selection
Pressing the R-H key you can switch between the Automatic or Manual Range selection.
In particular the "MANU" symbol point out the Manual range selection while the "AUTO"
symbol point out the Automatic Range selection.
The Manual Range selection will be disable if:
• The R-H key is pressed more than 2 second.
• The position of the rotary switch is changed.
4.2.2. D-H key: HOLD function
Press of D-H key active HOLD function which allows to hold the displayed digital values.
When this function is enabled the display shows the "
H "symbol.
The HOLD function will be disabled if:
• The D-H key is pressed again.
• The position of the rotary switch is changed.
4.2.3. AUTO POWER OFF function
In order to save the battery the clamp will be switched off 10 minutes later last selecting
function or changing range operation.
If this function is enabled the symbol is
displayed.
To disable this function select OFF position then rotate the selector in any position while
the R-H key is pressed.
Turning OFF and ON the clamp the AUTO POWER OFF will be re-enabled.