PRG Mbox Designer User Manual v3.6.1 - Manual (Page 66)

58 MBOX ® MEDIA SERVER USER MANUAL
Example - To get MBOX to output 720p/59.94Hz, do the following:
Step 1. Open Mac Displays Preference window.
Step 2. Using switch combinations outlined on page 56 , change EDID set on both outputs of the I/O module to the
PRG-MbE 59.94Hz set.
Step 3. At Displays Preference window, click Detect Displays button. Reset desktop resolution/frequency of both
displays to 1280 x 720 and 59.94Hz.
Step 4. At MBOX Setup tab Fullscreen mode section, select "HD-SDI 720p59.94" in pop-up menu.
When using the Custom Fullscreen mode, the Frequency combo box has preset values that cover all of the
standard frequencies. The result of the settings will depend on the current EDID set (an "X" indicates an
invalid combination that should not be used).
The result of any selection when using custom EDID (captured from an external display device) will depend on which
frequencies the device supports. If the selected frequency is supported in the custom EDID set, you will get it. In all
cases, when you attempt to use an unsupported frequency, you will get an undesirable result.
Genlock (Generator Lock)
Note: This section only applies to the rental MBOX EXTREME server.
The function of Genlock is to tell the server when to start drawing each frame of video. This function can be synced so
that all MBOX EXTREME servers in the system will start drawing at the same time. The MBOX Dual I/O Module
provides the the ability to synchronize - or "genlock" - the video outputs of the module to an external genlock source.
The I/O module can also output a genlock signal to other devices, as desired. Genlock Input and Output connectors
are provided on the I/O module for this purpose. (Note that only the top pair of Genlock connectors on each module
are active.)
Note: The Dual I/O Module only supports composite sync input. It does not support tri-level sync.
CAUTION! The Genlock Out is not a pass-thru. This output should only be used if you wish to use that particular
MBOX EXTREME server as the master for syncing (rather than a daisy-chain port).
Figure 3-4: Dual I/O Module Genlock Connectors
PREVIEW 2
A
PREVIEW 1
A
STAGE BLACKOUT PREVIEW DIM
TM
SDI 2
B
GENLOCK 2
IN OUT
ACTIVE
SDI 1
B
PREVIEW DIM
DVI 2
OUTPUT 2
DVI 1
OUTPUT 1
GENLOCK 1
USB
IN OUT
RDM Rx
RDM Tx
DMX Rx
INPUT 1
DMX
Dual I/O Module
PORT 2 PORT 1 INPUT 2
ETHERNET
COMPUTER
A B
LINK
Rx
Tx
POWER
ACTIVE USB
MODEL 20-9804-0100
EDID CAPTURE
EDID CAPTURE
VGA 2
STAGE BLACKOUT
VGA 1
* Only the top set of Genlock connectors (GENLOCK 1) are connected to the Mac computer.
Genlock In
Genlock Out *
Genlock LED