Specifications

7700/7800 MultiFrame Manual
7700ACO2-HD Dual HD/SD-SDI Smart Automatic Changeover
Page - 28 Revision 1.0
5.7.2. GPI Control Mode
GPI1/GPI2
This parameter sets whether or not the GPI’s control the output video
routing.
MOD1 – The GPI states control the output video routing, bypassing manual
or automatic control. A LOW GPI will select Video 1, a HIGH GPI will select
Video 2.
MOD2 – The opposite of MOD1. The GPI states control the output video
routing, bypassing manual or automatic control. A LOW GPI will select
Video 2, a HIGH GPI will select Video 1.
MOD3 – Sets the GPI’s as a global control. GPI1 will switch to Input 2 on
both ACO paths, GPI2 will switch to Input 1 on both ACO paths. If one of
the paths is not set to Mode 3, it will not switch.
MOD4 – The same as MOD1, but if in Auto Switch (Back) mode, the unit
will switch if the input selected by GPI is lost.
MOD5 – MOD6 – Not used
DISA – The GPI’s are not used.
DISA
MOD1
MOD2
MOD3
MOD4
MOD5
MOD6
5.7.3. Line Synchronizer Enable
LNS1/LNS2
This parameter sets whether or not the line synchronizer is enabled out the
output.
ON – Output video is fed through the line synchronizer. Output timing will
not be affected by video switches, but inputs must be timed within ½ of a
line of reference or they will be offset on the output.
OFF – Output video is not fed through the line synchronizer. Output timing
will be affected by switches, and the switch will not be clean unless the two
signals
are synchronous to the reference, and the switch line is set
correctly.
OFF
ON
5.7.4. Genlock Source Control
GSRC
This parameter sets which input the module will use for genlock.
RFIN – The GLCK BNC on the module rear plate will be used.
FRF1 – Frame Reference Input 1 will be used.
FRF2 – Frame Reference Input 2 will be used.
If no signal is present on the selected source, the output timing will be
derived from the selected routed input. This will prevent the line
synchronizer from working properly.
RFIN
FRF1
FRF2