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KEY OUTPUT This BNC connector is used to output the converted input video as serial component video
compatible with the SMPTE 292M standard. The module needs to be set to a specific video
output standard using the on screen menu at this time.
Note: The Fill and Key Inputs must be of the same video standard, and the Fill and Key
Outputs must also be of the same video standard.
2.2.
GENLOCK REFERENCE
For proper synchronization of the output video, the Key/Fill Up Converter must be locked to a genlock
signal of the output video format.
GENLOCK
This BNC is for connecting a bi-level or tri-level sync reference and is auto-detected by the
module. Jumper J21 selects whether the reference input is terminated to 75 ohms or high
impedance (default). (See section 7.3). The Reference menu item is used to select the correct
type of video reference being used. The output video can be timed with respect to the genlock
video using the H Phase Offset and V Phase Offset menu items. (See section 6.3.1) When no
Genlock is provided, the output video is timed with respect to the input video.
2.3.
GENERAL PURPOSE INPUTS AND OUTPUTS
On the 7710UC-KF a 6 pin connector labelled AUX I/O contains 4 GPI/O inputs. The connector pinout is
shown Figure 2. See section 7.4 for information about configuring the GPIO configuration.
The GPO is active low with internal pull up (10k Ohm) resistors to +5V. When the output goes low it is able
to sink up to 10mA. When high, the signal will go high (+5V). Do not draw more than 100µA from the
output. Figure 4 shows the circuit for the general purpose output. The GPO output is not used at this
time.
+ 5
VDC
GPI
GPI
Command
GND
Figure 3: GPI Input Circuitry
Revision 0.2
7710UC-KF HD Key/Fill Up Converter
J80
+ 12
VDC
3.6 K
to
internal
circuit
7700 MultiFrame Manual
7710UC-KF-3
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