120T3-433F RF Solutions, 120T3-433F Datasheet - Page 6

• Manufacturer Part Number: 120T3-433F
• Description: TRANSMITTER, 3SW, FM, KEYFOB
• Manufacturer: RF Solutions

Specifications of 120T3-433F

• Svhc: No SVHC (15-Dec-2010)

DS010-6 May 06
Learning a New Transmitter Encoder (Applies to all Decoders)
Antenna Design
1. Briefly press the programming switch (PSW).
2. Learn LED will illuminate.
3. Depress the transmitter once, Learn LED will extinguish.
4. Depress the transmitter again, Learn LED will flash. (approx 10secs).
5. Wait for Learn LED to stop flashing.
6. This transmitter will now operate the system.
Erasing The Memory – all modules
1. Press and hold PSW for 10 seconds.
2. Release PSW and LED flashes while the module erases its memory.
For 99% of applications a 17cm piece of wire is quite adequate for 433 MHz modules ??????. The range
achieved from the system is dependent on the choice and position of the antenna. The space around the
antenna is as important as the antenna itself. The optimum position is to locate the antenna so that is
protrudes directly out the top of the transmitter box. If this is not possible due to other design constraints,
try to keep the antenna, and in particular, the ‘HOT’ end away from other metal in the system such as
transformers, batteries and PCB tracks, especially ground planes.
For further information on Antenna design please see our full product catalogue.
Serial Data Output
Both the HiRK and HiR6 decoders provide a serial data output. (selectable option on HiRK) This outputs
the serial number, button and battery status of the transmitter encoder it has successfully received. It also
gives an indication of which inputs of the encoder have been activated and the status of the encoder
battery. This data has an idle state of logic ‘1’ and may be fed via an RS232 type driver circuit (e.g.
MAX232) which may then connect directly to a PC serial port. (An RS232 level serial data output is
provided on SA123 & RFEVAL2).
Serial data is output continually whilst data is being received from the transmitter. i.e. this output is valid
regardless of whether the encoder has been learnt to the decoder or not. If the user requires the serial
number of pre-learnt encoders only, then the serial output should be configured only to output data when
one of the digital outputs from the decoder is asserted which occurs only when an encoder has been pre-
learnt.)
The data received by the decoder (from the encoder) is checked for correct Manchester coding (it is not
KeeLoq decrypted) and the following data is output from the Serial Data output pin.
Please note that older versions of the HIRK used a different data format of 57.6K 7 Data Bits and 1 stop
bit, these modules will be prefixed with AR4 on the end of the part number or below. These modules may
still be ordered but we would highly recommend that the new HIRK modules (AR5 and above) are
incorporated into new products.
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The 7 digit KeeLoq serial number.
The KeeLoq button data and transmitter battery state.
A carriage return character and a line feed character.
RF R
ECEIVER
©2006 REG No 277 4001, England.
D
ECODER
H
YBRID
Page 6
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HIRK-315
HIRK-433
HIR6-433