MID49-DB9-V Power Distribution Box
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Specifications:
- Model: M49-DB9-V
- Camera Compatibility: Blackmagic PYXIS
- Battery Mount: V-Mount
- Voltage Range: 11-17V
- Power Outputs: D-Tap, 2-pin LEMO Compatible, 3-pin Fischer
Compatible, USB-C PD
Product Usage Instructions:
Installation:
- Attach Camera Mount Bracket onto rear two 1/4-20s using a 4mm
or 5/32 allen key. - For Remote Start / Stop function, connect the USB-C Cable into
the DB-9 REMOTE port. - Secure the device to the camera using a 15mm clamp and tighten
the friction thumbscrew. - Adjust battery plate position when using wide batteries to
expose power outputs. - Connect the USB-C cable to the camera’s USB port and the 2-pin
connector to the camera’s DC IN port.
Power Source Selection:
When both on-board batteries (BATT) and DC input (DC-IN) are
present, the device will automatically switch to the DC input if
its voltage is above 12V. It will switch to on-board batteries if
the DC input voltage drops below 12V.
LED Indicators:
LEDs on the side of the DB-9 indicate active power sources. A
green LED signifies a valid and active source, while a red LED
indicates an invalid source.
Battery Capability:
To prevent a brownout, ensure that the slide switch setting
matches or is lower than the maximum sustained current rating of
the power source. This information is usually available on the
battery or power supply’s label.
Swapping Battery Plates:
To change from a V-Mount to a Gold Mount battery plate, remove
the M3x10mm socket cap screws and disconnect power and data
connections. Be cautious not to pinch wires during assembly.
FAQ:
Q: What should I do if accessories lose power when using a
Tilta Nucleus lens control system?
A: If accessories lose power due to a design
error with Tilta Nucleus, remove the additional power cable, and
press the DB-9 reset button to restore power.
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Power Distribution Box DB-9 (Blackmagic PYXIS, V-Mount)
M49-DB9-V
Install Camera Mount Bracket onto rear two 1/4-20s, using 4mm or 5/32 allen.
For Remote Start / Stop function (R/S), install USB-C Cable into DB-9 REMOTE port.
Attach to camera using 15mm clamp and tighten friction thumbscrew.
When using wide batteries, adjust battey plate position to expose power outputs.
Install USB-C cable into camera USB port.
Install 2-pin connector into camera DC IN port.
Operating Voltage
Source On-board batteries (BATT) DC input (DC-IN)
Voltage Range 12.5 – 17V 11-17V (Note that Blackmagic PYXIS may shut down below 11.8V)
Power Source Selection
When two valid sources are present (BATT and DC-IN), the DC input will be selected when the voltage is above 12V. When the measured DC input voltage under load is below 12V, and an on-board battery (BATT) is present, DB-9 will switch to BATT. * Due to the nature of block battery performance, the DC input voltage must be above 14V at initial insertion to be valid.
LED Indicators
On the side of the DB-9, LEDs corresponding to the active sources are illuminated. When a source is valid and active, the LED will glow GREEN. When a source is invalid, either above 17V or below thresholds described above, the LED will glow RED.
Displayed Voltage
The PYXIS 2-pin DC input does not accept battery data so, when using DB-9, the camera will measure and display the active source voltage.
Battery Capability
For DB-9 to intelligently monitor camera and accessory power and prevent a brownout, the slide switch setting must match or be lower than the maximum sustained current rating of the power source. This information is commonly found on the battery or power supply’s label or the manufacturer’s website and is often listed as 10A, 12A, 20A, or similar.
Power Outputs
Type D-Tap 2-pin LEMO Compatible 3-pin Fischer Compatible USB-C PD
Voltage Source Voltage (11-17V) Source Voltage (11-17V) Regulated 24V at 2.5A Regulated 5V at 3A
Smart Fuse
Rather than a traditional fuse, DB-9 monitors the current going to the camera and calculates the remaining current budget for accessories. For example, the PYXIS uses approximately 1.5A, so with BATTERY CAPABILITY set to 10A, the remaining 8.5A would be allocated to accessories. If that 8.5A accessory limit is exceeded, DB-9 will cut accessory power, leaving the camera running. Once the accessories drawing excess current have been removed, the RESET button can be pressed to re-enable accessory power.
Example Calculation with a 12V Battery
Battery Capability
10.0A
Blackmagic PYXIS Video Transmitter Wireless FIZ
– 1.5A – 1.5A – 3.0A (24V at 1.5A)
Remaining Power Budget
4.0A
Remote Start / Stop
When the USB-C Cable is installed into the PYXIS USB-C Port, ARRI standard run / stop function is present on 3-pin Fischer connectors.
Swapping Battery Plates
To change from a V-Mount battery plate to a Gold Mount battery plate, remove (3) M3x10mm socket cap screws using a 2.5mm allen wrench and disconnect power and data connections. Reverse process for installation. Be careful not to pinch wires during assembly or damage may result.
Tilta Warning
When using a Tilta Nucleus lens control system, only one 3-pin Fischer cable is required. Do not use an additional power cable. Due to Tilta’s design error, the Nucleus will short circuit 24V and 12V causing accessories to loose power. If this happens, remove the second cable and push the DB-9 reset button.
© 2025 MID49, LLC
Documents / Resources
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MID49 MID49-DB9-V Power Distribution Box [pdf] Instruction Manual MID49-DB9-V, MID49-DB9-V Power Distribution Box, MID49-DB9-V, Power Distribution Box, Distribution Box, Box |