Blackmagic URSA Broadcast B4 Mount
The Broadcast B4 mount is the mount that your URSA Broadcast camera originally ships with.
If you have removed the mount to fit the optional Blackmagic URSA PL, EF, or F mount, follow
these instructions to reattach your B4 mount.
Tools Required
When attaching the B4 mount, you will need a 2mm Hex driver. While it’s not absolutely
required, we recommend using a torque wrench able to accurately set a maximum torque of
0.45Nm to reduce the potential of over tightening the screws.
2mm Hex driver
Attaching the B4 Lens Mount
1
0.10
ND
FILTER
AUTO
W/B
LENS
SDI OUT
12V OUT
2
0.10
ND
FILTER
AUTO
W/B
LENS
SDI OUT
12V OUT
Place Blackmagic URSA Broadcast vertically on a
solid, clean bench top to ensure that the mount
can be inserted vertically.
Keeping the original .10mm shim in place, gently
put the Blackmagic URSA Broadcast B4 mount
onto the camera body ensuring the red dot is at
the 12 o’clock position.
3
ND
FILTER
AUTO
W/B
LENS
SDI OUT
12V OUT
4
ND
FILTER
AUTO
W/B
LENS
SDI OUT
12V OUT
1
3
4
5
2
Loosely turn the five mounting screws until initial
contact is made with the shoulder of the lens mount.
Using the 2mm Hex driver, or torque wrench with
2mm Hex key, apply one full turn of pressure to
mounting screw 1, followed by one full turn to
screw 2. Repeat for screws 3 and 4, then 5.
Continue to apply one full turn to each screw in
the sequence above until all screws have reached
the maximum torque of 0.45Nm.
NOTE
When removing the B4 mount, simply follow the instructions in reverse order
from step 4 to step 1.
175
Interchangeable Lens Mount
