Description
The Kramer 691 is a high-performance HDBaseT 2.0 fiber-optic transmitter designed for ultra-long-distance extension of 4K60 (4:2:0) HDMI, USB, Ethernet, RS-232, IR, and analog audio. Ideal for enterprise AV, command centers, education, broadcast, and digital signage, the 691 converts all inputs into an HDBaseT 2.0 signal and delivers them over multi-mode or single-mode fiber with exceptional stability and clarity.
With transmission distances reaching up to 33km over single-mode fiber, the 691 ensures reliable delivery of high-resolution video and bidirectional data. It also supports audio embedding, allowing external analog audio sources to replace the HDMI audio streamāperfect for live presentations, lecture halls, and professional installations.
Designed for durability and easy integration, the unit features status LEDs, a built-in web UI, remote management, and fanless half-rack construction for efficient installation. Whether extending AV signals across a campus, between buildings, or throughout large facilities, the Kramer 691 provides unmatched performance and long-reach connectivity.
| Category | Details |
|---|---|
| Inputs | 1 HDMI; 1 stereo analog unbalanced audio (3.5mm) |
| Outputs | 1 fiber optic SFP+ (10Gbps LC, IEEE 802.3ae) |
| Ports | 1 IR (3.5mm); 1 USB-B; 1 RS-232 for link; 1 RS-232 for control; 1 100BaseT Ethernet (RJ-45) |
| Fiber Type | Multi-mode (MM) or single-mode (SM) |
| Optical Modules | Kramer 10Gbps SFP+ (MM included; SM optional) |
| Max Optical Reach | 3km (OM3 MM); 33km (OS1 SM) |
| Video Performance | Up to 4K60Hz (4:2:0) 24bpp; 10.2Gbps bandwidth; HDCP 1.4 |
| HDMI Features | Deep Color, x.v.Colorā¢, lip sync, Dolby TrueHD, DTS-HD, 3D, EDID, CEC |
| USB Extension | USB 1.1/2.0; up to 127Mbps; up to 7 USB devices |
| Ethernet Extension | Up to 100Mbps bidirectional |
| RS-232 Extension | 300ā115200 baud bidirectional |
| Power | 12V DC, 2A (1.3A consumption) |
| Enclosure | Aluminum; Ā½ 19ā 1U; convection cooled |
| Environmental | Operating: 0Ā°ā40Ā°C; Storage: ā40Ā°ā70Ā°C; Humidity: 10ā90% non-condensing |
| Dimensions (W x D x H) | 21.46 Ć 16.30 Ć 4.36 cm (8.45" Ć 6.42" Ć 1.72") |
| Weight | 1.0 kg (2.1 lbs) |
| Included Accessories | MM SFP+ transceiver, power adapter |
Payment & Security
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Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some productsāsuch as custom orders, special-order items, audio gear, software, and LED video wallsāare non-returnable. Non-defective returns may be subject to a 20ā30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
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