3
BBG-1070-QS Function Menu List and Descriptions
3-12
BBG-1070-QS PRODUCT MANUAL
BBG1070QS-OM (V1.8)
(continued)
Unit Local inputs are inputs received by the unit to serve as an individual PiP image. A Cascade input is an image
imported into the unit from an upstream BBG-1070-QS used in a multi-unit cascading multiviewer arrangement. An
input used as a cascade input has controls related to local setup locked out (for example, burn-ins and sizing) since
a cascading input serves as an underlay with all its burn-ins and other attributes already provided by the upstream
unit. Note that on a downstream unit receiving a cascade input, this input should be considered independent of the
local input positioning and attribute control provided by the downstream unit.
• Cascade Mode Low-Latency Mode Select
Provides modes where unit I/O latency can be reduced (by bypassing
cascade input framesync) using the choices shown and described below.
• Disabled: Normal default mode where an upstream cascaded input
is always aligned to the local unit’s selected reference. This results
in the normal, expected one-frame delay due to the framesyncing
action. Where low-latency is not required, it is recommended to use
this mode.
• Enabled – Automatic alignment: This mode applies framesyncing
when needed (applying framesync and bypassing low-latency
during these intervals). When alignment is again detected by the
local unit, framesyncing is correspondingly disabled and low-latency
operation is again applied. Because this mode can automatically
enable and disable framesyncing, an occasional video “hit” should
be expected when using this mode.
• Enabled – Manual alignment: Similar to the Automatic alignment
mode, this mode will disable low-latency framesync bypass when
needed. However, it will not apply alignment until the Cascade
Alignment Apply button is pressed, thereby circumventing an
unexpected auto-align video “hit”.
Note: Where a multi-unit cascaded arrangement is being used, locking all
inputs and all BBG-1070-QS units to the same house reference will
optimize alignment and help allow unimpeded low-latency operation
(with Latency Mode being set to Enabled - Automatic alignment).
• Cascade Mode Low-Latency Status
Displays the low-latency framesync bypass status as shown below.
• SDI Error Counter/Clear
In conjunction with the device Status page and its Input status indicators
(where an SDI input(s) is being used) allows running error totals to be
cleared.
Status page shows input status and OK Time / Errors for inputs receiving
SDI.
Table 3-1
BBG-1070-QS Function Menu List — continued
• Green indicator and “disabled” message indicates low-latency framesync
bypass is disabled by Low Latency control being set to Disabled.
• Yellow indicator and “drifting” message indicates low-latency framesync bypass
is disabled by event requiring framesync with low-latency correspondingly
disabled. This message typically appears when auto mode is selected and
cascaded input is experiencing timing drift versus local timing.
• Yellow indicator and “requires alignment” message indicates cascading input is
now detected as being locked, but local unit requires Align button to be
pressed to remove any buffer excess and re-establish sync.
• Green indicator and “enabled and aligned” message indicates cascading input
is now detected as being locked, with full bypass of framesyncing and
low-latency now is effect.
