RX4MHCS

RX 4MHCS/F
User manual
RX 4MHCS/F
433.92MHz OOK(AM) Receiver
Four output channels with free matching switches
Description
Receiver RF with AM modulation, 433.92 MHz working frequency, high sensitivity and selectivity
with integrated HCS decoding. HCS is a code variation technology of KEELOQ Microchip. It’s a
extremely usable version thanks to the possibility to match each button of the transmitter with
desired output. This kind of decoding allows to use the TX-12-HCS fully, it gets 12 indipendent
output channels, it means three decodings for 4 channels. Thanks to monostable and bistable mode and
the open collector outputs, it's ideal as control element in gate-opener anti-theft and also in some applications
where it needs the decoding channel. The code of transmitter is memorized in auto-learning mode(see the
features). Compatible with AUREL keyfobs: HCS-TX-1/2/3 (OVO), TX1/2/3-HCS-433 (HCS), TX2/4/6 M-HCS, TX-12 CH.
RX-4M HCS
2
3
7
8
9
10
11
12
13 14
15
+ 5V
CARICO
CARICO
CARICO
CARICO
LED
Vcc
With this decoding it can use our modules like RX-4MHCS/F and HCS-DEC4 to achieve a 12 channels HCS
decoding(using three modules) and one TX-12-CH.
Connection Pin-Out:
2) GND
3) Antenna
7) GND
8) Test Point – RX analog output
9) Programming push button
10) Ch1 output - Open collector (Triggered by pushing button 1 in the keyfob)
11) Ch2 output- Open collector (Triggered by pushing button 2 in the keyfob)
12) Ch3 output- Open collector (Triggered by pushing button 3 in the keyfob)
13) Ch4 output- Open collector (Triggered by pushing button 4 in the keyfob)
14) LED output – Connected to anode of LED
15) Vcc (+5Volt)
* HCS e KEELOQ are Microchip brands
How it works.
The voltage supply to the module (pin 15) shall be 5Vdc. Pin 9 shall be connected to the push button for
programming the receiver, pin 14 shall be connected to the anode of LED to control that programming has
Technical features are subjected to change without notice . AUR°EL S.p.A does not assume the responsibility of any damages by improper use of the device.
AUR°EL S.p.A. Via Foro dei Tigli, 4 - 47015 Modigliana (FC) – ITALY
Tel.: +390546941124 – Fax: +390546941660
http://www.aurel.it - email: aurel@aurel.it
Rev. A, 14.06.2010
Pag 1 di 3
RX 4MHCS/F
User manual
been carried out (output current is internally limited to around 20 mA by a 180 ohm resistor). External
antenna shall be connected, by utilizing for example a piece of wire 17 cm long and a surrounding
widespread ground plane(see picture 1). Every output of RX-4MHCS/F is driven by a transistor in open collector
configuration, able to bear max current of 100 mA. In stand-by mode transistor is cut off while when triggered
is in saturation region. Output can be programmed to work in mono-stable or bi-stable mode, every one
independent from the others. In mono-stable mode output is active for all the time the corresponding push
button is pressed in the keyfob, releasing the button output switches off. In bi-stable mode output switches its
state every time the corresponding push button is pressed in the keyfob (from active to inactive and vice
versa). The two operative modes are independent each other, that means it’s possible to program some outputs
as mono-stable and some others as bi-stable. If an inductive load is connected to the output (i.e. a relay) it’s
necessary to prevent voltage transients by putting a diode in parallel to the inductive load. LED anode shall be
connected towards the output of the module. In order to enable the receiver to activate its outputs it’s
necessary to store in the RX-4MHCS/F the keyfobs codes. To carry out this operation it’s necessary to approach
the keyfob to the receiver. By pressing a push button (it doesn’t matter which one) of the keyfob during the
auto-learning phase, the receiver RX-4MHCS/F recognises the button pressed and all other channels
automatically. Only the keyfobs with HCS encoder shall be recognised by the receiver RX-4MHCS/F. Keyfobs not
programmed or programmed with manufacturer code different from the one used by AUREL would not be
recognised. Based on reasonable demand, Aurel is willing to program the receiver RX-4MHCS/F with specific
manufacturer code indicated by the customer.
Ground plane
The circuit must be double layer. Ground plane must surround at the best the welding area of the receiver.
For further info please refer to the user manuals of AUREL’s receivers.
Pin2
Pin2
GND
GND
Linea 50 ohm
Connessione
antenna
GND
GND
GND
Capac ità di
disacc oppiamento
Pin
Pin15
15
++
5V
5V
Picture 1
Programmation
Auto-learning procedure.
Once supplied the decoding, the auto-learning led shall turns on for a little moment(~1sec) to show a correct
functioning. By pushing the auto-learning button the led will blink, it switches on one second and it switches off
again, this for 12 seconds. During this time, pushing the A switch of X keyfob, it will be assigned on the first
output. Pushing twice the auto-learning switch, the auto-learning led will blink two times quickly, then it will
switch off for one second, this for 12 seconds. During this time pushing B switch of X keyfob, it will be assigned
on the second output. Pushing thrice the auto-learning switch, the auto-learning led will blink three times
Technical features are subjected to change without notice . AUR°EL S.p.A does not assume the responsibility of any damages by improper use of the device.
AUR°EL S.p.A. Via Foro dei Tigli, 4 - 47015 Modigliana (FC) – ITALY
Tel.: +390546941124 – Fax: +390546941660
http://www.aurel.it - email: aurel@aurel.it
Rev. A, 14.06.2010
Pag 2 di 3
RX 4MHCS/F
User manual
quickly, then it will switch off for one second, this for 12 seconds. During this time, pushing C switch of X
keyfob, it will be assigned on the third output. Pushing four times the auto-learning switch, the auto-learning
led will blink four times quickly, then it will switch off for one second, this for 12 seconds. During this time,
pushing D switch of X keyfob, it will be assigned on the third output.
An another pushing of the switch, the led will blink once again, it will repeat an another program cycle. If any
switch of the transmitter will press again, it will escape of the auto learning cycle in 12 seconds. It’s possible to
learn until a maximum of four switches each single transmitter.
Num. of
Blinking quickly Tx button assigned to:
auto learning button
1
2
3
4
Output
Output
Output
Output
1
2
3
4
Other feature available:
1. In the event in which it is proceeded to assign a button of the same transmitter to the output
already programmed, the auto learning led will blink quickly for 10 seconds, this for indicating
that the operation is not correct.
2. In the event of it decided to auto learn the second transmitter, the auto learning procedure will
be the same above. The decoding system will automatically recognize that a new transmitter
isn’t to on yet.
How to switch output from mono to bistable
The auto learning button will command the switching between monostable mode and bistable mode.
Pushing once the auto learning button, the led will blink for 12 seconds. During this time pushing it again for
three seconds or until the led is on, pulling it immediately the led will turn off, after this a blink will show the
number one output is bistable. The number one output will switch in monostable mode doing again the same
procedure, after releasing the button, a two slowly blink of the auto learning led will show the change. The
procedure is the same for the other outputs: for the third output, push the auto-learning switch until to get
three consecutive blinkings, push again for three seconds or until the led is switched on, and then release the
switch; a slowly blink of the led will show the new correct bistable mode. Any change of the working on the
determinate output shall be valid for each switches of each keyfobs matched to that channel.
Erasing memory
In order to delete the memory of RX 4MHCS push the autolearning switch and release it, the led will blink. Now
push again the auto-learning switch for eight seconds to see the led switched on and switched off again,
showing the auto-learning switch has to be released. The correct deleting is indicated by five blinkings. After
the reset any transmitters with HCS decoding will not be recognize, and all the outputs will be set at the
monostable mode.
Technical features are subjected to change without notice . AUR°EL S.p.A does not assume the responsibility of any damages by improper use of the device.
AUR°EL S.p.A. Via Foro dei Tigli, 4 - 47015 Modigliana (FC) – ITALY
Tel.: +390546941124 – Fax: +390546941660
http://www.aurel.it - email: aurel@aurel.it
Rev. A, 14.06.2010
Pag 3 di 3