Harmonic ProView 2900 Installation Manual page 135

Chapter 7: Stream Configuration Menu
Strategy
7.5.3.2.
This parameter allows the user to select one of three filter strategies. To access the Strategy
submenu, from the front panel go to: Configuration Stream Filtering General
Strategy. The following figure shows the Strategy front panel screen:
DECODED ONLY DECODED ONLY
DECODED ONLY DECODED ONLY
SERVICE SERVICE
SERVICE SERVICE
PID PID
PID PID
The available strategies options are:
Decode Only – selects the service set on TV1 (for details see section 8.2). All of the
•
service' PIDs (Video, Audio and so on) are transmitted or filtered (based on Mode
parameter) to the ASI and/or IP outputs.
Services Filtering – This mode allows the user to select specific services from a list
•
(under "select services"). These modes are dynamic, means that the ProView 2900
follows the services' tables and automatically adds or remove PIDs accordingly. The user
can select two types of services:
Referenced services – any service included in the PAT.
Unreferenced service – the user can add any other service ID. When the service is received
at the input, the ProView 2900 will forward (or filter) it accordingly. This mode is useful for
scenarios were the user want to select an unreferenced service or configures the unit before
the system is fully deployed.
PIDs Filtering – allows the user to select specific PIDs, which are selected from a list
•
(under "select PIDs"). This mode is Static, means that the ProView 2900 forwards or
filters the selected PIDs and does not change it when PMT is changed. The user can
select 3 types of PIDs:
Constant PIDs – such as PAT, CAT and so on. the list is changed according to the stream
type DVB or ATSC which is configured by the user
Referenced PIDs – any PID which is included in the PMT of a referenced service.
Unreferenced PIDs – the user can add any other PID number. When the PID is received at the
input, the ProView 2900 will forward (or filter) it accordingly. This mode is useful for scenarios
were the user want to select an unreferenced PID or configures the unit before the system is
fully deployed.
Bitrate Mode
7.5.3.3.
This parameter defines the output stream as VBR or CBR. All NULL packets are removed at
the input.
VBR - allows variable output stream bit-rate. The ProView 2900 drops all unneeded
•
services and PIDs according to the user selection. NULL packets are filtered at the input,
and excluded from the output.
CBR – allows constant output stream bit-rate; the bitrate is configured by the user.
•
ProView 2900 drops all unneeded services and PIDs. NULL packets are dropped at the
input; however, NULL packets are inserted at the output to meet the configured bit rate.
The minimum configured bit rate should be 25 percents more then the selected services
or PIDs accumulated maximum bit rate. This is due to momentarily burstiness scenario.
In case that an overflow occurs, the "Filtering CBR Bit-rate is too Low" alarm is turned on
(if the alarm is not masked, a trap is generated).
© Harmonic Inc. Manual p/n 101543/Ver 1.0
Strategy Strategy
Strategy Strategy
7-13
Stream Filtering Configuration
1 1 1 1 - - - - 2 2 2 2 - - - - 2 2 2 2 - - - - 4 4 4 4
ProView 2900 Series/SW Version 1.94