3

 

 

9084 Function Submenu List and Descriptions

 

 

 

 

 

 

Table 3-2

9084 Function Submenu List — continued

 

 

 

 

 

 

 

 

 

 

Provides video Frame Sync and delay control tools.

 

 

 

 

 

 

 

 

 

 

• Framesync Enable

Disables the Frame Sync function, or selects from choices below.

 

 

 

 

 

• Off: Disables Frame Sync function; output video timing matches the

 

 

 

 

 

input video timing.

 

 

 

 

 

• Reference 1: Allows Frame Sync function to use external

 

 

 

 

 

Reference 1 as the reference standard.

 

 

 

 

 

• Reference 2: Allows Frame Sync function to use external

 

 

 

 

 

Reference 2 as the reference standard.

 

 

 

 

 

Note: If Reference 1 or Reference 2 is selected and an

 

 

 

 

 

appropriate external reference is not received, the

 

 

 

 

 

indication appears in the Card Info

 

 

 

 

 

status portion of DashBoard™ , indicating invalid frame sync

 

 

 

 

 

reference error. (Additionally, the card edge ERR indicator

 

 

 

 

 

illuminates indicating the same.) External reference signals

 

 

 

 

 

Reference 1 and Reference 2 are distributed to the card

 

 

 

 

 

and other cards via an 8310 frame bus.

 

 

 

 

 

• Input Video: Uses the input video signal as the

 

 

 

 

 

reference standard.

 

 

 

 

 

Note: If Input Video is used for framesync, any timing instability

 

 

 

 

 

on the input video will result in corresponding instability on

 

 

 

 

 

the output video.

 

 

 

 

 

 

 

 

 

 

• Vertical Delay Control

When Framesync is enabled, sets vertical delay (in number of lines of

 

 

 

 

 

output video/format) between the output video and the frame sync

 

 

 

 

 

reference.

 

 

 

 

 

(Range is -1124 thru 1124 lines.)

 

 

 

 

 

Note: Lines refer to lines in the output video format, and not to the

 

 

 

 

 

reference format.

 

 

 

 

 

 

 

 

 

 

• Horizontal Delay Control

When Framesync is enabled, sets (in µsec of output video timing)

 

 

 

 

 

horizontal delay between the output video and the frame sync reference.

 

 

 

 

 

(Range is -64.000 thru 64.000 µsec)

 

 

 

 

 

Note: When an external framesync reference is used, the card will not

 

 

 

 

 

produce a framesync reset until the variance between framesync

 

 

 

 

 

reference and output video exceeds ± 2 clock periods. Therefore, a

 

 

 

 

 

framesync reset will not result if offsets within this window are

 

 

 

 

 

applied.

 

 

 

 

 

To apply an offset/framesync reset within this window, first apply a

 

 

 

 

 

relatively large offset, then apply the target smaller offset.

 

 

 

 

 

Example: To apply a 1-period offset, first apply a 10-period positive

 

 

 

 

 

offset and then apply a 9-period negative offset. This results in the

 

 

 

 

 

target 1-period offset being applied to the output video.

 

 

 

 

 

 

 

3-22

9084 PRODUCT MANUAL

9084-OM (V4.0)

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Cobalt Networks 9084 manual Framesync Enable, Vertical Delay Control, Horizontal Delay Control
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