360 Systems 1200HD-EX - Manual (Page 37)

Page 36 MAXX-1200 Owner’s Manual
Initial System Configuration
Selecting a Sync Reference
In many applications, this server and downstream equipment connected to it must be referenced
to a common genlock source (SMPTE 170M or ITU-R-BT.470). A BNC connector is provided on
the rear panel to receive a genlock signal. It has a 75-ohm termination.
An internal crystal reference is also provided so that the server can be used as a stand-alone
player, and also for convenience for testing. Use particular care when operating the server with
an internal reference, as synchronization with other equipment may not be possible. Systems
that incorporate retiming circuitry in the router or video switcher may not require referencing.
Note that the input sync for recording is derived from the input itself. The E-E output is synched
to the input as well, so it is not possible to time the E-E output to genlock.
24-Frame Sync Source for Video Output
Video playback may be synchronized to an external sync source by choosing “External” video
Sync selection. For standard video frame rates of 59.94 and 50 Hz, playback timing should be
derived fro the Genlock BNC input. However, when a film rate of 23.98 or 24 Hz is selected, the
external sync reference will be from the video input connector.
Setting the Video Sync Source
To use with a genlocked system, select External Sync using the GUI as follows:
A. From the main menu bar select EDIT >CONFIGURE. Select the TIMING option. The
screen of Figure 4 appears.
B. Select EXTERNAL as the sync source.
C. Check that the front panel GENLOCK LED is now illuminated and the word
GENLOCKED now appears in the bottom right of the main GUI window.
Genlock Signal Quality
A genlock signal for the server must conform to one of the standards listed in the Technical
Specifications. An unstable genlock source may result in unwanted artifacts in the video output.
To use in a non-genlocked system, follow the instructions above but select INTERNAL Sync.
The input to the server uses the input signal itself as a reference, this allows recording any signal
that conforms to the currently selected video format and frame rate. No configuration is
required to use this feature.