Overview
The Atlona AT-HDS250SR(TX) is a professional HDMI transmitter designed for long-distance audio/video distribution in commercial AV installations. This transmitter module converts HDMI, stereo audio, and RS-232 control signals into dual CAT5/6/7 twisted pair format, enabling extension of video and control signals up to 825 feet without signal degradation. Paired with the AT-HDS250SR receiver, the AT-HDS250SR(TX) creates a complete point-to-point extender system suitable for conference rooms, control rooms, digital signage, and distributed video networks.
Key Features
- Extended transmission distance up to 825 feet (251 meters) over twisted pair cable
- HDCP compliant for protected content delivery
- Stereo analog audio pass-through with embedded equalizer
- RS-232 serial control for device management and automation
- Supports CAT5, CAT6, and CAT7 ethernet cable types
- Embedded gain and CTI (Cable Delay Equalization) adjustment controls
- Video resolution support up to 1920×1200 and 1080p without loss
Technical Specifications
- Transmission Distance: Up to 825 ft (251 m)
- Video Input: HDMI (Type A)
- Audio Input: 3.5mm stereo jack (L/R)
- Control: RS-232 via D-Sub 9-pin connector
- Cable Type: CAT5, CAT6, or CAT7 twisted pair (dual runs)
- Maximum Video Resolution: 1920×1200 or 1080p @ 60Hz
- Color Space: 4:4:4
- HDCP: Version 1.2 compliant
- Power Supply: External AC adapter (included)
Typical Applications
- Conference room video distribution from central AV rack to displays
- Control room monitoring and digital signage networks
- Long-distance HDMI extension in corporate and institutional facilities
- Point-to-point video transmission where fiber is not required
- Systems requiring integrated RS-232 device control over extended distances
- Retrofit installations where CAT5 infrastructure already exists
Compatibility & Replacements
Compatible With
- Atlona AT-HDS250SR receiver (required for complete system)
- Any HDMI source device (Blu-ray, media player, computer, camera)
- CAT5, CAT6, CAT7 twisted pair network cable
- RS-232 controlled devices (amplifiers, displays, switchers)
- Standard audio receivers and amplifiers with analog line inputs
Replaces / Drop-In Replacement For
- Used in paired systems with AT-HDS250SR receiver only; verify your receiver model before ordering
- Newer Atlona HDBaseT systems offer higher resolution and single-cable operation as alternatives
Works With
- Dual CAT5/6/7 twisted pair (standard network cable infrastructure)
- RS-232 serial protocol for third-party device control
- HDCP-protected HDMI sources
- Standard HDMI 1.3 compatible audio/video formats
