AP01-HD_rev.09_UK
15
4.
INSTRUCTIONS FOR USE
4.1.1.
POWER SUPPLY
This field strength meter may be powered in three ways:
1)
Directly from the mains. The instrument can be supplied with mains voltage from 90V
to 260 V. Protection fuses are inside and non accessible.
⇒
PLEASE NOTE
In case fuses interrupt, do not replace them. Send the instrument to a
service centre to be checked.
Connect the three-pole cable for power supply (C84), provided as standard, to the current
socket.
Press the power switch on
"| "
: the
Ch
indicator on the front panel lights up to indicate
there is mains voltage and the battery charger is working.
In these conditions the instrument is powered however it is not operating; it is on stand-by
mode.
2)
From the internal accumulator battery
3)
Through external Vdc source of power, between 11.5 V and 15.5V, able to supply at
least 5 A.
The instrument automatically uses the more convenient source, according to the following
order: the mains, the external Vdc power, the internal battery.
4.2.
SWITCH ON/OFF
To switch on the instrument, press the key
. To switch it off, keep the same key
pressed a few seconds.
This procedure ensures that data stored during the work session are saved in non-volatile
memory; moreover, it guarantees next time the instrument will switch on in the same mode
used on the latest session.
4.3.
USE OF BATTERY
If the supplied external DC is enough, the instrument automatically recharges its internal
battery, when it is on stand-by mode.
Some important notes about the use of batteries:
•
It is recommended to recharge the battery when the instrument is new
•
When the battery is almost totally flat, before the instrument is unserviceable the battery
icon on the upper left side of the screen becomes red. In this case it is recommended to
stop using the instrument as soon as possible and recharge its battery. If you persist in
using it (5 ÷10 minutes max), the instrument switches off.
•
When the instrument remains unoperational for long, it is suggested to recharge the
battery at least once a month, in order to offset the auto-discharge.
•
It is recommended to switch on the instrument at least once a month, and keep it
switched on a few hours to recharge the battery of its internal clock.