Description
SDI-B4 Link
Extracts iris information from 3G-SDI input signal according to Blackmagic Designs Camera Control Protocol. Outputs analog B4 lens iris control (Hirose- 12), tally LED and relay. Supports camera 1-10 by multi-position switch. SDI input passed through on SDI out.
Completely self contained unit - runs independently. Durable enclosure with blue anodized aluminum plates
Camera Support
The Blackmagic 3G-SDI Arduino Shield supports the following formats using SDI Level B: 720p50, 720p59.94, 720p60, 1080i50, 1080i59.94, 1080i60, 1080p23.98, 1080p24, 1080p25, 1080p29.97, 1080p30, 1080p50 (output only), 1080p59.94 (output only) and 1080p60 (output only), but the camera doesn´t have to be running the same video format as the program input, so you can use cameras in Ultra HD while the camera protocol is sent over HD signal to the camera.
Features
- Principle for setup
- Principle sketch for setup with the SDI-B4 Link
- Control iris on analog B4 lens
- Hirose 12-pin connector
- Tally on small LED
- Preview/program tally on small LED
- Selector switch
- Set camera number via selector switch
- 3-pin phoenix connector
- Program tally from 3-pin phoenix connector: Ground, IO, 12V (VIN)
- Test mode for iris and program tally
- Iris lens calibration feature
- Compatible with Studio Camera series and URSA Mini (+Pro)
- Check compatibility
- The Hirose 12pin connector supports most B4 lenses, but it’s your own responsibility to check that your particular lens has the features described below. Two example pin outs are given to the left from manuals for cameras and lenses, so you should be able to look up and check similar information for your lens.
- The SKAARHOJ SDI-B4 Link will:
- Pass on the DC 12V input to the lens with GND going to pin 3 and 12V going to pin 6
- Adjust the lens iris with an analog value between 2.5 and 7.5V going out on pin 5 (output to lens)
- Read back the iris position as an analog value from pin 7 (input from lens)
- Enable iris adjustment from the B4 Link box by pulling pin 6 to 5V through a 10 K resistor. To turn of iris adjustment, it will short pin 6 to ground
- Notice: The lens may have a “Manual / Auto” button which must typically be in Manual for this to work. In auto you may find that the lens always adjusts the iris to whatever value it receives from the B4 link box
- Please be aware you might expect vignetting depending on your lens, the sensor size and the type of mount adaptor used. SKAARHOJ takes no responsibility in this regard. Check with your camera/lens supplier.
