4-Channel HD-SDI Fiber Converter with Tally, RS485 & 20km Fiber – GAOTek
GAOTek 4-Channel HD-SDI Fiber Converter with Tally, RS485 & 20km Fiber supports 4-channel HD-SDI high-definition video signals, RS485, and Tally signal transmission over a single fiber-optic cable.
Description
Overview
GAOTek 4-Channel HD-SDI Fiber Converter with Tally, RS485 & 20km Fiber supports 4-channel HD-SDI high-definition video signals, RS485, and Tally signal transmission over a single fiber-optic cable. The system includes one transmitter and one receiver and supports 4-channel HD-SDI video transmission, Loop output, 4-channel Tally, and backward RS485. The video transmission is fully digital, non-compressed, broadcast-quality.
Features
- 4-channel HD-SDI video transmission over optical fiber
- Automatic cable equalization to ensure signal integrity
- Automatic reclocking: 270 Mbit/s – 1.48 Gbit/s
- Directly compatible with HD-SDI camera systems
- Supports 4-channel Loop output
- Long transmission distance up to 20 km (12.5 miles)
- Other transmission distances are optional
- Supports 4-channel Tally
- Supports 1-channel backward RS485
- Fully digital, non-compression, broadcast-level transmission
- Operating temperature: -10°C to +55°C
Technical Specifications
| SDI Input | SMPTE 424M, SMPTE 292M, SMPTE 259M, DVB-ASI, DVB-SSI and Telecom/Datacom | |
| 270Mbit/s to 1.48Gbit/s | ||
| Input number: 4 | ||
| Reflection loss:> 15 dB | ||
| Equilibrium: 0-150m @1.5Gb/s | ||
| Connector: BNC | ||
| Optics | Channel: 1 | |
| Type: single-mode | ||
| Transmission distance: 20km (Other distance Optional) | ||
| Reflection loss: > 15dB | ||
| Dithering: < 0.2UI | ||
| Connector: FC/UPC (SC, LC, STÂ optional) | ||
| SDI Output | Output number:4 | |
| Signal level: 800mV nominal | ||
| Rise/fall time: 200ps indication | ||
| Overshoot: < 10% amplitude | ||
| Reflection loss: >15dB | ||
| Dithering: < 0.2UI | ||
| Connector: 75Ω BNC | ||
| Data | 1Ch RS-485 (full/half duplex) and support NRZ, RZI and Manchester | |
| Max. 57600bps for RS485 | ||
| Connector: Industrial standard screw terminal | ||
| 4Ch Tally: A, B, C, D | ||
| Power and environmental indication | Operating temperature: -10℃～＋55℃ | |
| Power Input: 1A@12VDC | ||
| EMI/RFI: meets FCC Part 15 Class A, EU EMC standard | ||
| Average time trouble-free: >100000 hours | ||
| SDI video format supports | 625/25PAL; 525/29.97NTSC; 525/23.98NTSC; 720p50; 720p59.94;
1080P23.98/24/30/50/60; 1080i 23/24/30; |
|
Â
TALLY Connection
Transmitter TALLYÂ Signal Output Connection: (Can drive the LED indicator directly)
| T-A | T-B | T-C | T-D | GND | |
| LEDÂ Type | SDI-A | SDI-B | SDI-C | SDI-D | GND |
Receiver TALLY Signal Input Connection: (LED load type is only suitable for OC derive LED – driver)
| A | B | C | D | VDD | |
| LEDÂ Type | SDI-A | SDI-B | SDI-C | SDI-D |
Â
RS485Connection
| GND | D+ | D- |