AP401FULL- HD_rev. 09_UK
16
4.
OPERATING INSTRUCTIONS
4.1.1.
POWER SUPPLY
The field strength meter may be powered in three modes:
1)
From the AC mains network by means of an external power supply. The power supply
accepts mains voltage ratings of 90V to 260 V. The protection fuses are internal and are
not accessible.
⇒
NOTE:
In the event that any of these fuses should burn out, do not attempt to replace
them: send the power supply to the manufacturer's assistance centre for testing.
Insert the power cable into the
DC
power supply’s input connector. The
Ch
indicator on
the front panel will light up, indicating that the device is receiving power and the battery
is charging. The indicator light will be either green or red, indicating one of the following
conditions:
Green = battery charge complete
Red = battery charging
Flashing Red = battery charging procedure reduced or suspended due to an extremely
low battery charge or temperature.
In this situation, the device is receiving electrical power and is waiting to be turned on
(Stand-By).
2)
From the battery.
3)
By means of an external Vdc power source, between 11.5V and 15V, capable of
providing at least 3 A (using the same input as that which is used for the external power
supply).
4.2.
TURNING THE DEVICE ON/OFF
Press the
button to turn the instrument on. In order to shut the device off, hold the
same button down for a few seconds.
This procedure ensures that the data saved during the work session will remain in the unit’s
non-volatile memory and that the device will return to the same operating mode when
turned back on.
4.3.
USE OF THE BATTERY
If the external power supply is connected, the instrument will recharge the internal battery
when it goes into Stand-By.
A number of important indications for using the battery are listed below:
•
It is a good idea to recharge the battery before using the device for the first time
•
When the battery is low, the battery icon on the upper left-hand portion of the screen
will turn red. When this occurs, it is recommended to stop using the device as soon as
possible and to recharge the battery. If the device is not connected to the battery
charger and continues to be used (max 5 to 10 minutes), the device will shut itself off.
•
If the device is left inactive for long periods of time, is recommended to recharge the
battery at least once a month in order to compensate for self-discharge.
•
It is recommended to turn on the instrument at least once a month for a few hours. This
also serves to recharge the internal auxiliary battery that powers the clock.