Chapter 9: Video Configuration Menu Video 1 (and Video 2) Configuration Options
© Harmonic Inc. Manual p/n 101543/Ver 1.0 9-5 ProView 2900 Series/SW Version 1.94
NOTES
The option VIDEO Source should not be selected along with choosing TV MONITOR under
Configuration
Video
VBI 1..2
WSS, since the two aspect ratios may contradict each
other and cause unexpected results.
When changing the aspect ratio from 16:9 to 4:3, ProView 298x and ProView 299x might not
function properly when all of the following occurs:
* Interpolation is set to: Letter-Box.
* Monitor Aspect Ratio is set to: 4:3.
* Resolution of the received transport stream is set to full.
9.2.4. Lip-Sync Mode
The Lip-sync parameter selects the ProView 2900 lip-sync mode of operation. The following
figure illustrates the Lip-sync Mode screen.
Lip
Lip Lip
Lip-
--
-sync Mode
sync Mode sync Mode
sync Mode
1
11
1
STANDARD LOCK
STANDARD LOCK STANDARD LOCK
STANDARD LOCK
2
22
2
2mSec LOCK (ONCE)
2mSec LOCK (ONCE) 2mSec LOCK (ONCE)
2mSec LOCK (ONCE)
3
33
3
2mSec LOCK (NO DRIFT)
2mSec LOCK (NO DRIFT) 2mSec LOCK (NO DRIFT)
2mSec LOCK (NO DRIFT)
4
44
4
OFF
OFF OFF
OFF
The available options are:
• STANDARD LOCK – Standard sync of video and audio data within ±40mSec
• 2mSec LOCK (ONCE) – Sync audio to video within ±2 mSec. In this mode, the
ProView 2900 synchronizes the audio to the video only once, monitoring audio sync to
video stops. Only ProView 2980 and ProView 2981 Audio 3 and Audio 4 support this
feature.
• 2mSec LOCK (NO DRIFT) – Sync audio to video within ±2 mSec. In this mode, the
ProView 2900 continuously monitors the audio sync to video for maintaining
synchronization within ±2 mSec. Only ProView 2980 and ProView 2981 Audio 3 and
Audio 4 support this feature.
• OFF – No Lip-Sync.
9.2.5. STC-PCR Delay
The STC PCR Delay parameter sets the delay between the System Time Clock (STC) and
the ProView 2900 clock. The ProView 2900 clock is recovered from PCR data to compensate
for:
Delay between STC and PCR
Correctly processing the Presentation Time Setup (PTS)
Preventing a buffer underflow
The following figure illustrates the STC-PCR Delay setup screen.
STC
STC STC
STC-
--
-PCR DELAY
PCR DELAY PCR DELAY
PCR DELAY
040 [mSec]
040 [mSec]040 [mSec]
040 [mSec]
<000
<000 <000
<000 -
--
-
3
33
300>
00>00>
00>
Available delay time ranges from 0 to 300 mSec.
NOTE
To Next Page
Loading...
