691 is a high-performance HDBaseT 2.0 fibre transmitter for ultra-long distance extension of HDMI 4K60Hz (4:2:0), USB, Ethernet, RS-232, IR and stereo audio signals over multimode or single-mode optical fibre. The 691 converts all input signals to an HDBaseT 2.0 signal transmitted over optical fibre. The extended line receiver, such as the Kramer 692, reconverts the HDBaseT 2.0 signal into HDMI 4K60Hz (4:2:0), USB 2.0, Ethernet, RS-232, IR and stereo audio output signals. The 691 extends video signals up to 33 km (20.5 miles) over single-mode fibre with resolution up to 4K@60Hz (4:2:0).nnHigh-performance standard fibre extender — HDBaseT 2.0 fibre transmitter to deliver ultra-long distance signals over multimode or single-mode optical fibre infrastructures, using Kramer's plug-in OSP SFP+ units. The 691 is a standard fibre extender that can be connected to any HDBaseT-compatible extension product available on the market. Note: To ensure Kramer support and warranty of the 691 product, only use Kramer-certified high-performance OSP SFP+ optical plug-in units. For optimal range and extension performance, use Kramer OSP SFP+ units and recommended Kramer cables. Non-Kramer cables may not achieve these ranges.nnHDMI signal extension — HDMI 2.0 and HDCP 1.4 compatible. Supports colour depth, x.v.Color™, lip sync, uncompressed HDMI audio channels, Dolby TrueHD, DTS-HD, 2K, 4K and 3D. EDID and CEC signals are transmitted from source to display.nnI-EDIDPro™ Kramer Intelligent EDID Processing™ — Intelligent EDID management, processing and transmission algorithm that ensures Plug and Play operation for HDMI source and display systems.nnUSB extension — The USB 2.0 interface enables bidirectional data flow, allowing extension of HID (Human Interface Devices), such as a mouse or keyboard. Broadband USB peripherals, such as USB cameras with isochronous streaming and audio peripherals, transfer data continuously and periodically. Delivery of their transferred data is not guaranteed by the USB standard and is subject to USB and HDBaseT bandwidth management limitations. When such peripherals are connected, verify their functionality to ensure bandwidth limitations are not exceeded.nnEthernet extension — The Ethernet interface enables bidirectional data flow allowing Ethernet connectivity extension up to 100 Mbps for LAN communication and device control.nnBidirectional RS-232 extension — The serial interface enables bidirectional data flow allowing data transmission and device control.nnBidirectional infrared extension — The IR interface enables bidirectional data flow allowing remote control of devices located at each end of the extended line.nnAudio embedding (de-embedding) — A selectable unbalanced analogue stereo audio input is converted to digital signal and added (embedded) to the transmitted HDMI signal, replacing the embedded input HDMI audio signal. This enables embedding a selectable audio source via HDMI. For example, a presenter can display a video clip and temporarily replace the audio from the media source with another audio source, such as a microphone.nnCost-effective maintenance — Status LED indicators for HDMI input and HDBT output link facilitate local troubleshooting. Remote device management via the built-in web interface and RS-232 connection enables simple device maintenance. Kramer Network support provides remote device and network management. Local and remote firmware upgrade via mini-USB, RS-232 or Ethernet connection and the K-Upload tool ensures sustainable and field-proven deployment.nnEasy installation — 19" half-width 1U rack housing without fan allowing side-by-side mounting of 2 units in a 1U rack space.nnn APPLICATIONSnnUltra-long distance signal extension for: Ultra-long distance multi-room and inter-building connectivity; large auditoriums and divisible conference roomsnnHighly secure and reliable ultra-long distance signal extension for: Government applications; medical applications; rental and staging applicationsnn7-year warranty