Features:
Shows HDMI source on SDI display. Extract audio from HDMI signal to 3.5mm and spdif.
SDI interface operates at bitrates of 2.970 Gbit/s, 2.970/1.001 Gbit/s, 1.485 Gbit/s, 1.485/1.001 Gbit/s and 270 Mb/s.
Supports HDMI input timings: 480i/59.94, 576i, 720p 50/59.94/60, 1080i 50/59.94/60, 1080p 23.98/24/25/29.97/30/50/59.94/60.
Converts HDMI signal to SDI.
480i/576i to SD-SDI (SMPTE 259M-C, at bitrates of 270 Mbit/s).
720p/1080i to HD-SDI (SMPTE 292M, at bitrates of 1.485 Gbit/s or 1.485/1.001 Gbit/s).
1080p to 3G-SDI (SMPTE 424M/425M-AB, at bitrates of 2.970 Gbit/s and 2.970/1.001 Gbit/s).
Supports SDI output distance up to 100 meters (3G-SDI), 200 meters (HD-SDI), or 300 meters (SD-SDI).

Specifications:
Input Port: 1 x HDMI
Output Port: 1 x BNC (SDI/HD-SDI/3G-SDI) ; 1x3.5mm audio; 1xSpdif
SDI Transmission Rates: 2.970 Gbit/s and 2.970/1.001 Gbit/s
In/Output Resolution: 480i, 576i, 720p 50/59.94,60 ,1080i 50/59.94/60 /1080p 23.97/24/25/29.97/30/50/59.94/60
Power Supply: DC 5V   
ESD Protection Human body model: ±8kV (air-gap discharge)/±4kV (contact discharge)
Operating Temperature: 0°C ~ 40°C / 32°F ~ 104°F
Storage Temperature: -20°C ~ 60°C / -4°F ~ 140°F
Elative Humidity: 20 ~ 90% RH (Non-condensing)
Power Consumption (Max): 5W
Net weight: approx. 175g
Gross weight: approx. 278g
Product size: approx. 92*44*23mm/3.62*1.73*0.9''
Gross weight: approx 215*147*55mm/8.46*5.78*2.16''
Optical fiber length: approx.1.5m/4.92ft
Power cable length: approx. 1.2m/3.93 ft
Plug type: US, UK, EU

Note: 
Please allow 1-3mm differs due to manual measurement.
Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding.