Guangzhou Fixed Code Remote Control User Manual

Technical Specifications
Fixed Code Remote Control
Version 1.0

Overview

The Fixed Code Remote Control is a transmitting device that utilizes fixed chip encoding (e.g., PT 2262/HS2260). It represents a cost-effective and widely adopted wireless remote control encoding solution.
The product offers 6,561 different address codes and features 4 fixed button values; up to 15 distinct button values can be combined. The product is available in various housing options and can be customized through custom mold design or developed according to the customer’s specific transmission format to meet diverse customer requirements.

Product Features

Scope of Application

1. Rolling shutter door and rolling shutter window controller;
2. Gate barrier; retractable gate controller;
3. Passenger vehicle door control system;
4. Remote control system;
5. Smart home system;
6. Remote-controlled door opener;
7. Wireless security alarm system;
8. Remote-controlled curtain system;
9. Wireless Industrial Controller;
10. RGB light strips, light bands, and lighting fixture control;

Transmission Format Specification

The following provides only emission pulse width data for 1–2 common resistors; the emission pulse width data may vary depending on the specific oscillation resistor used; please refer to the actual sample for precise information.

The Fixed Code Remote Control is a 24-bit remote control device; the first 16 bits represent the remote control’s address data, while the last 8 bits represent the remote control’s key value. The first 16 bits can support up to 6,561 different address codes when implemented using peripheral hardware. The last 8-bit key value can be configured to represent up to 15 different button codes. For a typical four-button remote control, the key values are 1000,0100,0010, and 0001.Different address codes are generated; the decoding end requires either a PT2272 chip to decode the corresponding address code or a microcontroller to interpret this address code, thereby enabling one-to-one remote control. The traditional PT2262-based decoding method is now relatively rare; most systems utilize a microcontroller for decoding. During the decoding process, the remote control must first undergo a remote pairing operation with the receiving end to establish one-to-one remote control functionality. A commonly used pairing method involves connecting an external learning button to the microcontroller; when this button is pressed, a change in the high/low-level signal occurs on the corresponding microcontroller pin – at which point the program recognizes this as the “learning” state. Subsequently, any key on the remote control can be pressed to complete the pairing operation. This pairing method is widely adopted within the industry; however, programmers may also define their own custom pairing procedures based on their specific product requirements – the above information merely serves as reference parameters. See the figure below.
The fixed-code remote control can also be programmed with the same code for application; by assigning all remote controls the same address code, the programming process eliminates the need for a code-matching operation – the program can then recognize this address automatically, enabling universal control across all remote controls.
The fixed-code remote control can also be used without any encoding; the address code defaults to the fixed value 5555 (hexadecimal data), enabling universal control of remote-operated devices. The microcontroller decoding process allows for a ±20% tolerance based on the sample pulse width.

RF OPERATION
CODE BITS
A Code Bit is the basic component of the encoded waveform, and can be classified as either an AD (Address/Data) Bit or a SYNC (Synchronous) Bit.
ADDRESS/DATA (AD) BIT WAVEFORM
An AD Bit can be designated as Bit “0”, “1” or “f” if it is in low, high or floating state respectively. One bit waveform consists of 2 pulse cycles. Each pulse cycle has 16 oscillating time periods. For further details, please refer to the diagram below:

SYNCHRONOUS (SYNC.) BIT WAVEFORM
The Synchronous Bit Waveform is 4 bits long with 1/8 bit width pulse. Please refer to the diagram below:

Modification Record

Federal Communications Commission Notice
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Any Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
– Reorient or relocate the receiving antenna.
– Increase the separation between the equipment and receiver.
– Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
– Consult the dealer or an experienced radio/TV technician for help.
ISED Statement:
This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Scienceand Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following twoconditions:

1. This device may not cause interference.
2. This device must accept any interference, including interference that may cause undesired operation of the device.

The digital apparatus complies with Canadian CAN ICES 3 (B)/NMB 3(B).
This device meets the exemption from the routine evaluation limits in section 6.3 of RSS 102 and compliance with RSS 102 RF exposure, users can obtain Canadian information on RF exposure and compliance.
This equipment complies with Canada radiation exposure limits set forth for an uncontrolled environment.