12G-SDI Fiber Optic Extender, 1x LC
Model No: DVI-7348
Rugged, compact extender supports SD-SDI, HD-SDI, 3G-SDI, 6G-SDI and 12G-SDI over one single-mode fiber up to 10 km (6.2 miles). Embedded audio, RS-485 and tally light control are also supported.
Key Features
- Supports multiple SDI resolutions: SMPTE-259M (SD-SDI), SMPTE-344M (ED-SDI), SMPTE-292M (HD-SDI), SMPTE-424M (3G-SDI), SMPTE-ST-2081 (6G-SDI) and SMPTE-ST-2082 (12G-SDI)
- Supports data rates up to 11.88 Gbps
- Utilizes a single optical cable
- Supports Single-Mode optical fiber distances up to 6.2 miles (~ 10 km)
- Extended length 25 miles (~ 40 km) option available
- Compact, rugged metal enclosure with locking BNC connectors
- Supports RS-485 and Tally Light Control for remote control of acquisition cameras
- Wide operational temperature range: -40° to +185°F (-40° to +85°C)
- Low RFI / EMI profile for sensitive applications
- Optical fiber transmission is immune to environmental signal noise
High Performance — The DVI-7348 is a compact, high performance fiber optic extender that supports SDI, HD-SDI, 3G-SDI and 12G-SDI signal extension over a single strand of Single-Mode optical fiber at distances up to 6.2 miles (~10 km). This extender set consists of an optical transmitter unit that converts the SDI signals into light pulses for transmission over an optical fiber cable. An optical receiver unit converts the light pulses back to an SDI signal for downstream processing or display on a monitor.
Superior Design — The transmitter unit includes an SDI input with a buffered loop-through SDI output, plus connections for RS-485 and Tally Light control. The receiver unit includes two buffered SDI outputs, as well as connections for RS-485 and Tally Light control, which allows equipment in the control room to access and control acquisition cameras over the optical link. Both units are housed in rugged, die-cast metal cases equipped with 75-ohm BNC connectors. A single LC fiber optic connection is used to link Tx and Rx units.
These features make the DVI-7348 the perfect solution for extension of SDI, HD-SDI, 3G-SDI, and 12G-SDI signals over very long distances in even the most demanding broadcast, studio, and live production environments.
| Performance | |
| Compliance | SMPTE-259M (SD-SDI) SMPTE-344M (ED-SDI) SMPTE-292M (HD-SDI) SMPTE-424M (3G-SDI) SMPTE-ST-2081 (6G-SDI) SMPTE-ST-2082 (12G-SDI) |
| Maximum Video Bit Rate | 11.88 Gbps (12G-SDI) |
| Maximum RS-485 Bit Rate | 4.0 Mbps Unidirectional from RX to TX |
| Supported Color Depth | 12-bit |
| Input Impedance | 75 ohms |
| Signal Level | 800 mVpp ± 50 mV |
| Supported Video Formats | 480i, 480p, 576i, 576p, 720/30p, 720/60p, 1080i, 1080/30p, 1080/60p, 1080/120p, 2160/30p, 2160/60p |
| Digital Audio Support | HD-SDI = 16 channels of embedded 48 kHz, 24-bit audio channels 3G-SDI = 32 Channels of embedded 48 kHz, 24-bit audio channels 12G-SDI = 64 Channels of embedded 48 kHz, 24-bit audio channels |
| Connections | |
| SDI Input with Looping Output | 2x BNC Coaxial Male Connectors |
| Dual SDI Outputs | 2x BNC Coaxial Male Connectors |
| Optical Input / Output | 1x LC optical connector |
| RS-485 | 4-pin Phoenix Connector |
| Tally Light Control | 4-pin Phoenix Connector Unidirectional from RX to TX |
| Power Input | 1x Female USB Micro-B connector |
| LED Indicators | |
| TX Unit | Status LEDs for Power, Optical Link, Tally Light, SDI Input and Loop Output |
| RX Unit | Status LEDs for Power, Optical Link, Tally Light, SDI Output 1 and SDI Output 2 |
| Optical | |
| Optical Technology | 2x Discrete Optical Channels |
| Optical Data Rates | SDI Signals: up to 11.88 Gbps RS-485, Tally Light: 2.5 Gbps |
| Optical Transmitter Unit | 1x 1330 nm DFB Laser, Class 1 Laser Product 1x 1270 nm GaAs PIN Photo Diode |
| Optical Receiver Unit | 1x 1270 nm DFB Laser, Class 1 Laser Product 1x 1330 nm GaAs PIN Photo Diode |
| Optical Transmitter Output Power | -4 dBm (minimum) / 0 dBm (maximum) |
| Optical Transmitter Extinction Ratio | >5.0 dB |
| Optical Receiver Input Sensitivity | -14.5 dBm (minimum) / 0 dBm (maximum) |
| Optical Link Power Budget | 8 dB (minimum) |
| Cable | |
| Fiber Cable Type / Max. Length | 9/125 μ Single-Mode Fiber with 1x LC connector / 6.2 miles (10 km) Extended range (40 km) version available on request. |
| DVIGear Fiber Cable | OFNP, Plenum-rated, Indoor/Outdoor-rated, Black PVC Jacket |
| Cable Outside Diameter | 0.12" – .2" (3.0 – 5.0 mm) |
| Mechanical | |
| Construction | Heavy-duty, Die-cast metal enclosure with jet black finish |
| Case Dimensions (L x W x H) | Case Only: 2.7" x 2.0" x 0.6" (68.0 mm x 50.0 mm x 15.0 mm) Case and Connectors: 3.3" x 2.0" x 0.6" (84.8 mm x 50 mm x 15 mm) |
| Net Weight | DVI-7348-TX: 4.2 oz. (120 g) DVI-7348-RX: 4.2 oz. (120 g) |
| Environmental | |
| Operating / Storage Temperature | -40° to +185° F (-40° to +85°C) |
| Operating / Storage Humidity | Operating: 5% to 80% (non-condensing) Storage: 5% to 95% (non-condensing) |
| Power Requirements | |
| Optical Transmitter / Receiver | The Tx and Rx units can be powered from a functioning USB port using a USB adapter cable, or by the supplied external power adapters. |
| External AC Power Adapter | Input: 100-240 VAC / 50-60 Hz, 0.2 A Output: 5 VDC, 2.6 A |
| Maximum Power Consumption | DVI-7348-TX: 450 mA (2.25 watt) DVI-7348-RX: 300 mA (1.5 watt) |
| Regulatory Approvals | |
| Fiber Optic Extender Unit | FCC, CE, RoHS |
| AC Power Adapter | FCC, CE, UL, C-UL, CEC, GS, PSE, RoHS |
| Warranty | |
| Limited Warranty | 3 Years Parts and Labor |
| Model Numbers | |
| DVI-7348 | Fiber Optic Extender, 12G-SDI, SMF, 1x LC |
| DVI-7348-TX | Fiber Optic Transmitter, 12G-SDI, SMF, 1x LC |
| DVI-7348-RX | Fiber Optic Receiver, 12G-SDI, SMF, 1x LC |
| DVI-CUST-OPT | 9/125 μ Single-Mode Optical Fiber Cable, Plenum-rated, 1x LC (specify length) |
| Accessories Included | |
2x External AC Power Adapters (p.n. DVI-7331-PS) with USA plug, 1x Quick Start Guide | |
| Optional Accessories | |
External AC Power Adapter (p.n. DVI-7331-PS) with Euro, UK, or Australia plugs USB Type A Male to USB Micro-B Male Adapter Cable (p.n. DVI-7332-PSX) Custom Optical Cables (contact DVIGear for details) | |
| Product Notes | |
The Transmitter and Receiver Units are sold separately. The accessories shown here are included per unit. | |

Power Supply, +5VDC with USB Micro-B Connector
DVI-7331-PS
+5 VDC at 2.6 A with a USB Micro-B connector.

Power Supply Extension Cable, +5V with USB Micro-B Connector
DVI-7331-PSX
Powers a device over USB Micro-B from a two-pin Phoenix DC output, in place of its own +5V supply. 1.6 meters (5 ft).

USB Power Cable, Type-A to Micro-B
DVI-7332-PSX
A 0.5 meter (1.6 ft) adapter cable, USB Type A male to USB Micro-B male.
