Output relay in idle state

2.4 RS-485 keyboard / PTZ Installation

All functions can be remote-controlled by the EKB-500 universal keyboard. Using the EEPbus protocol, digital video recorders, keyboards and speed domes can be installed on one single RS-485 bus. One system can comprise up to 8 keyboards.

2.4.1General RS-485 bus installation

The EKB-500 keyboard uses a RS-485 simplex wiring; the signal is transferred via a single twisted pair line. CAT5 network cable is recommended, UTP version (unshielded) is sufficient for normal applications. A shielded cable should be used if the installed cables are expected to be highly susceptible to interference. The number of devices installed in one bus is limited to 32, and the maximum cable length is 3,900 feet. Both of these can be expanded using a signal distributor EverFocus Model EDA997A (see below).

Both the first and the last device in series should be terminated with 120 Ohm resistance in order to minimize line reflections.

RS-485 bus serial wiring

Cable length from box to device („Stubs“) has to be limited to 2m using connector boxes.

RS-485 bus serial wiring with connector boxes and connection cable

Direct RS-485 bus star wiring is not supported unless using an EverFocus Model EDA997A (see below).

Improper RS-485 bus star wiring

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EverFocus EPHD08 user manual RS-485 keyboard / PTZ Installation, General RS-485 bus installation

EPHD08 specifications

The EverFocus EPHD08 is a highly respected surveillance solution designed for both commercial and residential applications. As part of EverFocus' lineup of security products, this device combines advanced technology with user-friendly features, making it a versatile addition to any security system.

One of the key features of the EPHD08 is its high-definition video recording capabilities. Supporting resolutions up to 1080p, this device ensures that users receive crystal-clear images, which can be crucial for identification and monitoring purposes. The enhanced video quality provides better clarity in both daylight and low-light conditions, ensuring reliable surveillance around the clock.

The EPHD08 utilizes H.264 compression technology, which is known for its efficiency in reducing file sizes without compromising image quality. This means that users can store more footage without the need for extensive storage solutions. The device also supports various storage options, including local storage via hard drives and cloud storage solutions, facilitating easy retrieval and management of recorded footage.

Another significant characteristic of the EPHD08 is its robust network connectivity. Equipped with Ethernet ports and wireless connectivity options, this surveillance system allows for seamless integration into existing networks. Users can remotely access their surveillance feeds through smartphones, tablets, or PCs, providing a convenient way to monitor their premises from anywhere in the world.

The EPHD08 is also designed with user experience in mind. Its intuitive interface makes it easy for users to navigate through the system settings and access recorded footage. With multi-channel support, users can monitor several areas simultaneously, enhancing security coverage across multiple premises.

Moreover, the device is built to withstand various environmental conditions, making it suitable for both indoor and outdoor use. The durable construction and weatherproof design ensure that the EPHD08 can operate reliably in different climates, providing peace of mind for users.

In summary, the EverFocus EPHD08 stands out with its high-definition recording, efficient H.264 compression, robust network capabilities, and user-friendly interface. These features, combined with its durability, make it an excellent choice for anyone looking to enhance their security infrastructure with a reliable and versatile surveillance system. Whether for a business or home, the EPHD08 offers a comprehensive solution to meet the demands of modern security needs.