15
5.4 Data format
The HM22XX radio remote control systems use an highly sophisticated data protocol
between TX and RX. Apart from the control functions, a 16 bit system address and
incremental code element is transmitted, which gives the code a unique format. If the code
were transmitted continuously, it would repeat about every 30 years.
5.5 Radio licence
The HM22XX series remote controllers use HM-Funktechnik GmbH radio modules 70TXRX-
M1 for the data link.
The used radio modules 70TX-M1 and 70RX-M1of HM-Funktechnik GmbH are approved by
the
FCC
under the code
PUX
and also fulfil the European
R&TTE
directive.
6 Trouble shooting
If the remote control system doesn`t work, please check first the wiring on the skidder. Is the
plug inserted correctly? Are the contacts of the plug clean, dry and not oxidized? Is the cable
ok and without damages?
Did you charge the battery?
Does the the receiving signal lamp at the receiver lightens when you push a button on the
transmitter?
Do you hear the clicking of the relays when you push a button on the transmitter. If yes,
please check if the driver voltage is activated and the red LED lightens?
Is there maybe a short-circuit in the cable to the winch due to wrong modifications?
If nothing helps please contact our service. They will help you in either case. If it is
necessary to send in the remote control system for service please don`t forget to add a short
failure description. It is often very hard to find a failure that is not obvious or not constant.
For further information please contact our service department or your dealer. The HM-
Funktechnik
service department
is available via phone no.
+49 (0)6875 9105 17
If you send units for repair to HM-Funktechnik, please send it to the following address:
HM-Funktechnik GmbH
Zum Handenberg 3
D-66620 Primstal
Please send the units with return postage payed. These expenses are refundable in case of
guarantee.
It is recommended that you inform HM-Funktechnik by phone to discuss the arrival of units
for repair. It is also helpful if you include detailed information about the problems
experienced with the unit.
Summary of Contents for HM 2225
Page 17: ...17 9 View on the pc board of the receiver ...
Page 18: ...18 10 Block diagram of the receiver ...
Page 20: ...20 ...
