Bedienungsanleitung Graupner MX-16 HoTT (Seite 14 von 200) (Englisch)

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Operating Notes

Transmitter power supply

The mx-16 HoTT transmitter is ﬁtted as standard with

a high-capacity rechargeable 4NH-2000 RX RTU NiMH

battery (Order No. 2498.4FBEC) (speciﬁcation re-

served). When delivered, the standard rechargeable

battery is not charged.

When you are using the transmitter you can monitor

the battery voltage on the LCD screen. If the voltage

of the transmitter battery falls below a certain voltage

(default 4.7 V), which can be set in the “Battery warning

threshold” line of the “Basic settings” menu, page 134,

you will hear an audible warning signal. The screen then

displays a message reminding you that the transmitter

battery needs to be recharged.

#01

0:22h

stop

0:00

0.0V

4.7

HoTT

battery

needs

charging!!

Always recharge the transmitter battery in good time.

When you see this message, cease operations immedi-

ately and recharge the transmitter battery.

Note:

Ensure that the correct battery type is set in the “Basic

settings” menu on page 134! NIMH must be set as the

standard value.

Charging the transmitter battery

The rechargeable NiMH transmitter battery can be

recharged with the battery charger (Order No. 33116.2)

supplied in the set, using the charge socket located on

the right-hand side of the transmitter. Leave the battery

inside the transmitter for charging, to avoid premature

damage to the internal battery socket.

As an approximate guideline a discharged battery

should be charged for twelve hours at a current cor-

responding to one tenth of the capacity printed on the

pack. If you are using the standard transmitter battery

and the charger supplied in the set, this current is

200 mA.

The transmitter must be switched “OFF” for the whole

period of the charge process. Never switch on the

transmitter when it is still connected to the charger; even

a very brief interruption in the process can cause the

charge voltage to rise to the point where the transmitter

is immediately damaged. For this reason check carefully

that all connectors are secure, and are making really

good contact.

Polarity of the mx-16 HoTT charge socket

Commercially available battery charge leads produced

by other manufacturers are often made up with the op-

posite polarity. For this reason it is essential to use only

the genuine Graupner charge lead, Order No. 3022.

Using automatic battery chargers

As standard the charge socket is protected against

short-circuit by a diode. However, genuine Graupner

automatic battery chargers are still able to detect the

voltage of the battery. The maximum charge current

must not exceed 1 A, otherwise the diode and possibly

other components may be damaged.

If possible, set the delta peak voltage difference of your

fast charger to a value in the range 10 mV … 20 mV or

equivalent, as described in the charger’s instructions;

this ensures that it is suitable for fast-charging NiMH

cells.

First connect the banana plugs on the charge lead

to the charger, and only then connect the other end

of the charge lead to the charge socket on the trans-

mitter. When the charge lead is connected to the

transmitter, never allow the bare ends of the plugs to

touch! To avoid damage to the transmitter, the charge

current must never exceed 1 A. If necessary, limit the

current on the charger itself.

Removing the transmitter battery

To remove the transmitter battery, ﬁrst disengage the

cover over the battery compartment on the back of the

transmitter, then lift it off:

Remove the battery, then carefully pull on the power

lead to disconnect the transmitter battery connector.

Installing the transmitter battery

Hold the connector attached to the transmitter battery

in such a way that the black or brown

wire faces the aerial, and the unused

socket of the battery connector is on

the side facing the bottom, then push

the battery connector onto the three

pins projecting out of the inside of the

Polarity of

transmitter battery

connector

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