Sound Devices PIX 250i - Manual (Page 44)

PIX 250i User Guide
v. 2.10 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.
38
Sync
hr
onization & T
imecode
In this scenario, the video camera is the master source of the video sync. The timecode can either be
read from the camera or be generated by the PIX 250i. The accuracy of the recording is dependent on
the internal clock accuracy of the camera.
To receive timecode from the camera, set [Timecode/Sync - Timecode Mode] to one of the external
timecode modes for cameras that output standard SMPTE timecode to the PIX 250i’s Timecode BNC.
Alternatively, the PIX 250i can receive timecode from the SDI or HDMI input (if the camera sends
timecode in this way) by setting [Timecode/Sync - Timecode Mode] to Ext TC (SDI, HDMI).
The Setup Menu option [Timecode/Sync - Sync Out] can be set to several valid settings, including
the following:
• Off - sync signal is disabled.
• Genlock, Follows Video In - Genlock for another camera or device is derived from the video sig-
nal of the single camera.
• Wordclock, Follows Video In - Wordclock for an audio device is derived from the video signal of
the single camera.
Single Camera with Genlock Input, Genlocked from PIX
SDI/HDMI
Genlock
In this scenario, the PIX 250i is the master source of video sync. Set the output of the sync generator
to a selected rate and connect the PIX 250i Sync Out (Genlock) to the same camera. Feed the time-
code output of the PIX 250i into the timecode input of the camera.
Multiple Cameras with Genlock Input, all Genlocked from a Single PIX
SDI/HDMI
SDI/HDMI
Genlock
A
A
B
B
In this scenario, a PIX 250i is the master sync source for multiple cameras, each with or without their
own PIX acting as a recorder. Because of this locked connection, the cameras can be run indefinitely
and be assured of frame-accurate sync with no possibility of drift.
Set the output of the sync generator to a selected rate and connect the PIX 250i Sync Out (Genlock)
and timecode output to multiple cameras (“mult” the genlock output). This connection uses the PIX
250i as both the video sync source and timecode source. Heads and tails sync for the camera and PIX
files will be perfect.