Graupner Hendheld RC 2.4 GHz No. of channels: 8 33116 Ficha De Dados

16

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 

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

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