AJA IoExpress - Manual (Page 35)

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29 Io Express Installation and Operation Guide — Using the AJA Control Panel
Playback Timing (greyed-out when in Input Passthrough)
Genlock (Freerun, Ref In, Input 1, or Input 2)—Selects how Io Express will synchronize program
video:
Freerun: in this mode, Io Express generates video without an external reference source
Ref In: directs Io Express to use the Ref Video source for sync (usually an analog black burst
video signal)
Video: directs Io Express to use whichever video input source has been selected in the
Inputs screen for sync
Note: When the Io Express goes into capture mode, the Genlock mode automatically switches
to Video In.
Timing (Horiz and Vert)—these two pull-downs allow output timing adjustment with reference
to the Ref Video source selected. The Horizontal reference can be adjusted by selecting a
number of pixels (clocks) to offset. Vertical can be adjusted by specifying a number of lines
to offset.
Format Screen The Format screen shows the video format currently in use by the Io Express framebuffer (called
the Primary Format) and allows you to change it. Throughout the Control Panel, choices are
always presented based on what Io Express can do with the signals available and the inputs/
outputs selected. For example, on the Formats screen, if the output or inputs are a different
format than the primary, you’ll see an additional information pane that allows you to view and
edit the secondary format—including control over whether down-conversion is employed. In
the figure below, the SDI input (Secondary Format) is being down-converted to the Primary
Format.
Format Screen and Pulldown Menu
Formats menu