Grass Valley 8925EMB-B v.2.1.6 - Manual (Page 33)

8925EMB-B and -U — Instruction Manual 33
Remote Configuration
Video Input Web Page
Use
this
link
Use the Video Input web page ( Figure 15 on page 35 ) to select and monitor
the video input source to the module with the following:
Video Input Selection
This section provides the following for the video input signal:
• Select Input Video – select the input source from the rear module as one of
the following input sources. Only one source can be enabled at a time.
• Coax – select the electrical input at BNC J9 as the video input.
• Fiber RX1 – check the Enabled checkbox to enable the Fiber RX1 input
as the input video (SFP-13103G-M1DRX or SFP-13103G-M1TRX
SFP device must be installed).
• Fiber RX2 – check the Enabled checkbox to enable the output
(SFP-13103G-M1DRX SFP device must be installed).
• Signal Name – the signal name defined on the I/O Config web page will
appear in this field.
• Signal State – this field reports the status of the input video signal as
Present, Not Present, Not Supported (in the case of no fiber SFP device
installed) or Invalid format.
Video Delay
Controls are provided for two different settings to accommodate the addi-
tional electrical length of audio processing. Set the Video delay control to
one of the following according to the type of audio and the delay require-
ments of the video:
• Minimize Video Delay – checking this box enables a mode that bypasses an
internal video delay that is meant to match the AES input audio delay
when bypassing the Sample Rate Converter (SRC). This box should
normally be unchecked because audio/video delay matching is more
important than minimizing video delay in most cases.
When the shortest video delay is the most important criteria for the
module, use this setting. As the audio embedding processing has a
longer electrical length than the video delay, the module produces an
audio/video offset, especially when Audio Sample Rate Conversion is
enabled with non-synchronous audio. This mode is not recommended
for Dolby E signals.
When in this mode, the video electrical length of the module will be the
specific length as reported in
Table 9 on page 57 .