SECTION 4 |
25
USING OPTIONAL CONTENT DELAY
4
Using Optional Content Delay
If your requirements include recording content for playback and distribution to different sites at different times,
you may want to order Zephyr iPort PLUS with the Content Delay option. Its features include:
♦
NTP synchronization for content delay on absolute time.
♦
Built-in SSD with dynamic storage space allocation, configurable per codec.
♦
Delay of GPIO and user data channels synchronized with audio.
Content Delay is not a field-installable option. It must be installed by the factory at the time you place your order.
To verify that your Zephyr iPort PLUS does indeed contain Content Delay, go to the
Options
page, and look at the
bottom under
Feature Licensing.
Make sure that
Time-zone delay
is marked
Active.
Content Delay Configuration
From the Codec Configuration page, click the Global Options button at the right top to set the following common
parameters (bottom two sections of the page):
♦
“Maximum expected bitrate per stream” is used to convert the installed physical storage space to the total
program time that the content delay feature will be able to store (summed per all codec channels).
♦
“Delay relative to packet arrival time, ignore sender timestamps”. This option determines whether the
content will be delayed by the set time relative to its creation time at the sender (option unchecked), or
relative to the arrival time at the receiver (option checked).
Configuration is done individually for each codec from the
Options
page. Scroll down to the bottom of the page,
and use a 24 hour time format to enter the duration to store. A good analogy is to think of the Zephyr iPort PLUS as
a pipe. The program comes in one end and goes out the other.
The ‘Duration to Store’ determines the total time length of the pipe that the program is traveling through, while the
recording and playback process can continue indefinitely. The ‘playback offset’ determines the point at which you
tap into the pipe.
This scheme allows you to instantly switch to any point of the stored program, back and forth, as long as the
fragment is still in the pipe.
