GRAUPNER mx-12 Hott, Руководство по программированию

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16 Operating Notes
Receiver power supply
A wide range of rechargeable four-cell and five-cell NiMH
batteries varying in capacity is available for use as the
receiver power supply. If you are using digital servos we
recommend that you use a five-cell (6 V) pack of gener-
ous capacity. If your model is fitted with a mixture of
digital and analogue servos, it is important to check the
maximum permissible operating voltage of all the types.
The PRX unit, Order No.
4136 , provides a stabilised
receiver power supply with a user-variable voltage from
one or two receiver batteries; see Appendix.
For reasons of safety battery boxes or dry cells should
never be used.
The voltage of the airborne power supply is displayed on
the transmitter screen while the model is flying:
#01
2:22h
stop
flt
0:00
0:00
5.5V
5.2V
M
HoTT
If the voltage falls below the pre-set warning threshold -
3.8 Volt as standard, but variable in the Telemetry menu;
see page 146 - a visual and audible low-voltage warning
is triggered.
Nevertheless it is important to check the state of the
batteries at regular intervals. Don’t put off charging
the batteries until the warning signal is triggered.
Note:
Please refer to the main Graupner FS catalogue or visit
the Internet site at www.graupner.de for full details of
batteries, chargers, measuring equipment and battery
monitor units.
Charging the receiver battery
The charge lead, Order No. 3021 , can be connected
directly to the NC receiver battery for charging. If the
battery is installed in a model and you have installed one
of the following switch harnesses: Order No. 3046 , 3934
or 3934.1 or 3934.3 , the battery can be charged via the
separate charge socket, or the charge socket which is
built into the switch. The switch on the switch harness
must be left at the “OFF” position for charging.
Polarity of the receiver battery connector
General notes on battery charging
Observe the recommendations provided by the •
charger manufacturer and the battery manufacturer
at all times.
Keep to the maximum permissible charge current
•
stated by the battery manufacturer.
The maximum charge current for the transmitter
•
battery is 1.5 A. Limit the charge current to this value
on the charger.
If you wish to charge the transmitter battery at a
•
current higher than 1.5 A, you must first remove the
pack from the transmitter, otherwise you risk damag-
ing the circuit board through overloading the conduc-
tor tracks, and / or overheating the battery.
Carry out a series of test charges to ensure that the
•
automatic charge termination circuit works correctly
with your battery. This applies in particular if you are
using an automatic charger designed for NiCd batter-
ies to recharge the standard NiMH battery.
You may need to adjust the charger’s termination
•
behaviour, if it provides this option.
Do not discharge the battery or carry out a battery •
maintenance program via the integral charge socket.
The charge socket is not suitable for this application.
Always connect the charge lead to the charger first,
•
and only then to the transmitter or receiver battery.
Observing this rule eliminates the danger of acciden-
tal short-circuits between the bare contacts of the
charge lead plugs.
If the battery becomes hot when on charge, it is time
•
to check the pack’s condition. Replace it if necessary,
or reduce the charge current.
Never leave batteries unsupervised when on •
charge.
Read and observe the safety notes and handling
•
information in the section starting on page 8.
Operating Notes