Greatway GMH mini HD-SDI high-definition video optical transceiver is a device that supports 1080P 30P or 60P HD-SDI signal transmission, and the maximum transmission distance can reach 80Km. The device can be embedded with a single fiber bidirectional module to simultaneously transmit RS-485 camera pan-tilt control data on the same optical fiber.
The GMH mini HD‑SDI optical transceiver (including GMHT transmitter and GMHR receiver) converts HD‑SDI video signals to optical signals for long‑distance transmission over a single fiber. It supports 1080P 30P or 60P video formats with a resolution of 1920×1080 and can transmit up to 80 km. The unit also offers an optional reverse RS‑485 channel for camera PTZ control.
Key specifications include 12 V DC power supply, less than 2 W consumption, dimensions of 82 mm × 18 mm × 18 mm, and operation from –25 °C to +5 °C with 5‑95 %RH humidity. Optical parameters support 1310 nm or 1550 nm wavelengths, output power –15 dBm to +2 dBm, and receiver sensitivity –24 dBm. This manual is written in Chinese.
| HD‑SDI video format | 1080P 30P or 60P |
|---|---|
| Image resolution | 1920×1080 |
| Maximum transmission distance | 80 km |
| Input level | >>380 mVpp |
| Output level | 800 mVpp |
| Power supply | 12 V DC |
| Dimensions | 82 mm × 18 mm × 18 mm |
| Weight | 100 g |
| Operating temperature | -25 °C to +5 °C |
| Operating humidity | 5–95 %RH |
| Optical wavelength | 1310 nm, 1550 nm or CWDM |
| Optical output power | -15 dBm to +2 dBm |
| Receiver sensitivity | -24 dBm |
| Optical loss | 50 dB |
| RS‑485 data rate | 0 to 400 kbps |
| Impedance | 75 Ω |
| Connector type | BNC male |
| Fiber connector types | FC/UPC, ST/UPC, APC |
It can transmit HD‑SDI signals over a single‑mode fiber up to 80 km.
The device supports HD‑SDI video formats of 1080P 30P or 1080P 60P.
Yes, an optional reverse RS‑485 channel is available with a data rate of 0 to 400 kbps.