HiMARK RX datasheet, UHF ASK Receiver (1-page), RX datasheet, RX pdf, RX datasheet pdf, RX pinouts. The RXA is a fully integrated, amplitude-shift-keying. (ASK) modulation HiMARK. RXA-LF. RXA. 20 Pins, SSOP, mil. HiMARK. RXA- LF. HiMARK RXA-LF datasheet, cross reference, circuit and application notes in pdf format.

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Once the wire connection will work, i may suspect 2 other things. Thanks for all the advice Now my Rx module works fine in a short distance around feet. Does it have an ADC that needs disabled?

Please help me guys. Originally Posted by mackrackit. Furthermore, if you look at the block diagram in the datasheet from the HiMark RXA chip, you will see the comparator in the output circuit.

I just use a small wire with length 10cm each for my Tx an Rx. The time now is Results 1 to 40 of The dataslicer uses a comparator as I explain at http: Seems to be the one you’re using right? Maybe you screw the OSC signal with your datqsheet.

RX3310 Datasheet PDF

I also recommend sending 3 or rx310a copies of each packet, including the wide sync pulse. Join Date Mar Posts There is not much you can do with a comparator to reduce the noise. I do not see anything to cause the transmitter to send data from the keypad, unless I have become legally blind.


Check your comp drawing. Adding another will not help. Hmark can also try to add more Synk character at the begining of your transmission. Once you have something workable, just add the modules.

Don’t know what’s really happen with my encoder. Pause 50 ‘ Debounce himak TE pin should be tied low too unless the oscillator won’t run.

But It’s not work even I Connect the transmitter and receiver pin directly. Page 1 of 2 1 2 Last Jump to page: I’d use a 1uf or even a. Use the one for your frequency and even with out a good ground plane you should see improvement. Then adjust until the black boxes go away.

problem with sending data using RF module

Is there any chance for the receiver to get the sending data clearly without noise If I connect the data pin to LM ? I think maybe the problem is from the antenna. No pot for contrast. But It’s fine to me. Begin with it and see what happen. Join Date Jul Posts 2, Do you have any oscilloscope?

Joe, seems you missed the underlined section In this case, the only output from the receiver is digital so the noise pulses will have the same amplitude as the data and the duration of the noise pulses are likely to be nearly the same as the bit period.


Hook a pot up as a voltage divider with the wiper going to display pin 3. There simply is no “Happy Spam” If you do it you will disappear from this forum. Same thing for your PICs.

The data can use almost any protocol desired, including RS with or without manchester coding. For your Information, Himwrk put 1M resistor between these 2 pins. What kind of comparator circuit are you planning? Originally Posted by dhouston.

The decoder works fine but the encoder have a little bit problem. Make sure the PIC config fuses are correctly set. If you have any idea about the problem. In meantime you could do some test with an external comparator Actually I want to send a character using my RF module. Regards, -Bruce tech at rentron.

I think you ment to take the output of the rec to the inverting input, not ground. Dave Always wear safety glasses while programming. I have tested a SAW controlled transmitter and superregenerative receiver from the same company. You should have a decent distance between the transmitter and receiver See pics in POST 1.