Dahua DHI-KTA01 - User Manual

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Summary

Important Safeguards and Warnings

Operating Requirement

Details on where and how to install the device to ensure proper operation and prevent damage.

Power Requirement

Specifies the type of power supply and wiring needed, including voltage and safety standards.

Structure

Introduction

Overview of the analog 4-wire video intercom system and its application.

Features

Details the functionalities of both the video intercom and voice intercom components.

Appearance

Illustrates the physical appearance of the video and voice intercom units.

Front Panel Description

Explains the icons and buttons on the front panel of the video intercom.

Rear Panel Description

Details the ports and connections available on the rear panel of the video intercom.

Installation and Wiring

Installation

Instructions for mounting the video intercom and voice intercom units on the wall.

Wiring Preparation

Information on port connection rules and selecting appropriate cord specifications for wiring.

Wiring

Guidance on connecting the intercom system, including safety precautions and system capacity.

This document describes an Analog 4-Wire Video Intercom system, which comprises both voice intercoms and video intercoms. It is designed for use in buildings, such as residential buildings, to facilitate voice and video communication between residents and visitors. The voice intercom is typically installed outdoors, while the video intercom is installed indoors.

Function Description

The Analog 4-Wire Video Intercom system enables real-time voice and video communication. The video intercom can connect to up to three voice intercoms and also supports connection to external cameras (CVBS). The voice intercoms feature a built-in camera and self-adaptive IR fill light, allowing them to send phone calls to video intercoms.

Usage Features

The system offers intuitive controls for managing communication and settings. On the video intercom's front panel, dedicated buttons allow users to adjust speaker volume during video/voice communication: one button decreases the volume, and another increases it.

When the video intercom rings, pressing a specific button allows the user to initiate voice communication with the person at the voice intercom. Pressing this button twice quickly enables hanging up a call from the voice intercom. Another button allows the user to view the person at the voice intercom and engage in conversation. Repeated presses of this button cycle through real-time video feeds: first from one voice intercom, then a second, and finally from an analog camera, if connected.

A dedicated button is also available to open the door near the voice intercom when it is ringing. The video intercom includes an LCD screen for display, a power indicator, and a silent indicator. During communication, pressing the silent button will mute the video intercom, and the indicator will turn off. Both the video and voice intercoms feature microphones and speakers for audio communication. The voice intercom also has a built-in camera and a call button. A water outlet is present on the voice intercom to allow liquid to drain from the speaker.

Important Technical Specifications

The system uses RVV4 cords for wiring, with specific cord specifications depending on the transmission distance between the voice and video intercoms:

For distances up to 10m (TD≤10m), RVV4×0.2mm² cords are recommended.
For distances between 10m and 30m (10m<TD≤30m), RVV4×0.5mm² cords are recommended.
For distances between 30m and 50m (30m<TD≤50m), RVV4×0.75mm² cords are recommended.
If the distance exceeds 50m, coaxial cables should be used.

The system supports a maximum configuration of two voice intercoms and three video intercoms within a single communication system.

Wiring Preparation and Rules:

The video intercom's rear panel includes several connection points:

Power_1, VIDEO_1, AUDIO_1, and GND_1: These are for connecting to the first voice intercom.
Power_3, VIDEO_3, AUDIO_3, and GND_3: These are for connecting to the third voice intercom.
CAM_IN and GND: These are for connecting to an external analog camera.
POWER IN and GND: These are for the main power input.
Power_4, VIDEO_4, AUDIO_4, and GND_4: These are for connecting to the fourth voice intercom.
Power_2, VIDEO_2, AUDIO_2, and GND_2: These are for connecting to the second voice intercom.

The port connection rules are crucial for proper data communication:

A 4-wire port A of a video intercom can connect to a 4-wire port C of another video intercom for data communication.
A 4-wire port B of a video intercom can connect to a 4-wire port D of another video intercom for data communication.
A 4-wire port A of a video intercom cannot connect to a 4-wire port B or D of another video intercom for data communication.
A 4-wire port C of a video intercom cannot connect to a 4-wire port B or D of another video intercom for data communication.

The recommended analog cameras (CVBS) for this system are from the HAC 1230 series.

Installation:

The video intercom is installed by first fixing a bracket to the wall with screws, and then hanging the video intercom onto this bracket. The voice intercom can be installed in two ways: either by fixing its bracket to the wall and then hanging the voice intercom on it, or by installing a voice intercom cover on the wall and then hanging the voice intercom onto the cover.

Maintenance Features

The document emphasizes several safety instructions and operating requirements to ensure proper functioning and longevity of the device:

Environmental Conditions: Avoid placing or installing the device in direct sunlight, near heat-generating devices, or in humid, dusty, or fuliginous areas.
Stability: Ensure horizontal installation or placement on stable surfaces to prevent falling.
Liquid Avoidance: Do not drip or splash liquids onto the device, and do not place liquid-filled objects on it to prevent liquids from flowing inside.
Ventilation: Install the device in well-ventilated areas and do not block its ventilation openings.
Power Supply: Use the device only within its rated input and output range. The product requires electric wires (power wires) recommended for the area, used within their rated specifications. The power supply must meet SELV (safety extra low voltage) requirements and conform to Limited Power Source in IEC60950-1. Specific power supply requirements can be found on device labels.
Disassembly: Do not dismantle the device arbitrarily.
Cabling: The device must be used with screened network cables.
Appliance Coupler: The appliance coupler is a disconnecting device; ensure it is positioned to facilitate easy operation during normal use.
Wiring Precautions: During wiring, avoid pulling cords violently to prevent breakage. Cord joints should be wrapped with insulated rubber tape to prevent short circuits.

The document also notes that the guide is for reference only, and the actual product prevails in case of inconsistency. Designs and software are subject to change without prior notice, and users should contact customer service for the latest information.