Operating Instructions; Instrument - Description; Turning On; Auto Power Off - Tenmars TM-507 User Manual

4. OPERATING INSTRUCTIONS

4.1.

INSTRUMENT - DESCRIPTION

key to switch on/off the instrument
LOCK key to select the continuous mode measurement and to set the insulation
measurement time
ZERO key to calibrate the cables being used
key to on and off the backlight
GO key to start a measurement
ARROW keys to select measurements

4.1.1. Turning on

When the instrument is turned on all display segments are lit for just a while. Then the instrument is
ready for DC voltage measurement.

4.1.2. Auto power off

The instrument automatically turns off 15 minutes after last pressure of keys. To resume operation
turn on the instrument again. When the instrument must be used for long voltage measurements, the
operator may need to disable the auto power off function. In order to do so press the LOCK key. On
next switch on autopower off will be automatically restored.
On the instrument's LCD the symbol
LEGEND:
1. Inputs
2. Inputs
3. Display
4. ON/OFF key
5. LOCK key
6. ZERO and backlight key
7. GO key
8. FUNC HOLD key
Fig. 1: Instrument description
is displayed only when auto power off is active.
EN - 5
TM-507