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July 28, at datashete It seems hard to get…?! What are these combination keys? Advice is much appreciated. Fixed frequency model usually uses SAW Surface Acoustic Datasheer resonators to stabilize transmitting frequency, and is easier for operating frequency identification, while adjustable frequency model uses LC circuit, center frequency change is done using adjustable capacitor or adjustable inductor, and the operating frequency can be detected by spectrum or oscilloscope.

This information is used in remote control applications. We were thinking of screening the codes with some sort of code reader and only allowing sales of repeat codes to out of state customers and the others locally. Also you can learn fixed and rolling-code remotes.

Factory Leadtime for more quantity: Enables transparent bi-directional communication for wireless data logging and sensor reading.

Thanks in anticipation for any answers. I made the link anonymous, so be sure this is no self-marketing https: Combination keys are what we usually called in factory, actually it is combination of IOs.

(PDF) EV1527 Datasheet download

I think your car remotes maybe not compatible with alarms, so it can not be controlled. There is an arming button on the machine, so you can only operate the remote for 2 minutes after pressing the button if eg1527 keep pressing the button during use, the timer resets.

There are basically three encoding types in RF remote control field, which are fixed code, learning code and rolling code, encoding type is determined by the encoder IC the remote control is using. Learning code remote control using EV chip is also known as self-learning copy remote, which can copy fixed code or learning code remote controls face to face.

Can the EV have more than 4 switches connected to it? Control 4 relays through the RF keypad with datasheey of around meters. July 28, at 7: What do you think?

November 9, at 3: So it should be enough for your project, even using low combination system like I will contact him on tuesday directly and ask him. July 28, at 3: Are there specifics ones which I can look up and get specs on? Reduced size and weight High reliability and ruggedness No tuning or readjustment required Mass production capable.

RF Encoder, contains unique random address, 4 bit data, 12V operation, Eqv. The detailed comparisons between fixed frequency model and adjustable frequency model are listed as follows.

EV datasheet of EV Specifications -

January 18, at April 15, at 9: April 16, at 9: Each transmitter has pre-programmed unique ID set during manufacturing and cannot be changed. Can this be done? Fixed frequency model utilizing SAW filter is strongly recommended evv1527 it has performance and stability advantages over adjustable frequency model which utilizes adjustable ceramic capacitor or adjustable inductor.

This obviously limits the odds, but wondering if we are crazy to not use learning codes or if fixed codes offer enough protection. The oscillator resistor value determines the transmitting OSC frequency, a higher oscillator resistor value will result in a lower OSC frequency, thus a longer wavelength, which will make the receiver pickup the signal easier. Hi William, thanks for your fast answer. Identify Encoding Type There are basically three encoding datxsheet in RF ev127 control field, which are fixed code, learning code and rolling code, encoding type is determined by the encoder IC the remote control is using.

Thank you for your help.

Also there are no details about the remote specs. Leave a Reply Cancel reply Your email address will not be published. The detailed comparisons between three encoding types are listed as follows.

Do you mean EV chip? The following identification manual applies to fixed frequency model which usually used SAW Surface Acoustic Wave resonators and has its operating frequency printed on the enclosure of SAW component. Datasheet of EV usually only covers the encoder part, not the RF transmit circuit, maybe you can buy a RF transmitter module to test first. Listens to modulated infrared signals Khz and removes its carrier frequency to output data.

Code combination depends on encoder chip used.

Useful dqtasheet receiving IR remote control signals and decoding using controller. So, in this case. We do not just sell things, We use ec1527 ourselves in our products, and provide you with high quality tested components for trouble free experience. That explains why self-learning copy remote can copy most fixed code and learning code RF remote controls in the market, regardless of the oscillator resistor they are using.

May 20, at 8: Rolling code remote control is usually duplicated using remote control duplicator, the number of rolling code remote control which can be duplicated is also limited.