Wegener Communications 6420 사용자 설명서

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iPump 6420 User’s Manual
 
www.wegener.com 
800070-01 Rev B 
Chapter 1, Page 7 
1.2.3. 
Supplemental capabilities 
Along with the above basic S/F system functions, certain supplemental capabilities are 
beneficial to the radio network mission.  As shown in Figure 1, Return Path provides a general 
tool to request and receive low-bandwidth status and logging information from edge i6420s back 
to the uplink control system.  Return Path is implemented with HTTP protocol, allowing the 
i6420s to communicate with the uplink control system with through either dial-up connections (if 
modem equipped) or with broadband IP connection.  Because HTTP is used, most i6420s should 
have little problems with corporate firewalls at affiliates sites.  With the Return Path tool, several 
other functions are possible. 
The function that assures that the satellite-bandwidth-intensive process of MPE/IP file 
download is working efficiently is called “Asset Healing”.  In this function, the uplink control 
system maintains a database showing what each Compel address (either individual i6420s or 
groups of such) should have in it’s own file repository.  Xml files showing the expected list is 
then sent to that i6420 or group of i6420s.  The i6420s, in turn, delete local files no longer 
required and request, through Return Path, any files that are still missing.  The uplink control 
system then re-orders the missing files, maintaining synchronism between the files as captured in 
the Compel/MediaPlan subsystem, and the files resident on each edge i6420. 
Two functions allow the customer to audit the radio networks to ensure that the local spots 
have properly played, for audit and billing purposes.  Through Return Path, the Compel control 
system requests returned reports showing spot “as-run” logs for the edge i6420s.  From this 
information, specific reports may be prepared for the customer comparing the original scheduled 
spot-play requests against the returned logs.  Additionally, iPump6420 features an two on-board 
AM/FM tuners.  These can be used to provide true Off-Air Reporting (OAR).  When the uplink 
control system requests the play of local spots, it can also request simultaneous recording of 
audio demodulated from the local AM or FM radio broadcast.   Presumably, this recording will 
show evidence of the local airing of the requested spot.  The i6420 then compresses the recorded 
material, and when requested by the uplink control system, returns those OAR audit files to 
through Return Path. 
To enhance the true “local experience”, WEGENER S/F systems also implement a feature 
called “DJ Liners”.  With this feature, all local affiliates in a radio network share a single on-duty 
DJ, and that DJ’s liner “greetings” are customized for each and every affiliate.  This is done by 
having the control system maintain a database of all DJs assigned and their on-duty hours.  The 
DJ prepares liner greetings for all the member affiliates in the particular network.  These files are 
then downloaded to special Liner Assets, one at each affiliate, but all “aliased” to the network’s 
name.  When the DJ on-duty wishes to send a liner greeting, of a certain length in seconds, to all 
the affiliates, he pushes a button that creates an incoming closure to the Compel control system.  
This causes a request to be sent out to all affiliate i6420s to play one of the liner files of that 
length, under that “aliased” network name, chosen as a semi-random “shuffle” from all files 
available.  This generates a local DJ liner greeting to be generated at each affiliate, often with 
mixing where the live network feed continues, but at a “ducked” audio level.  The result is the 
perception, in the final radio audience, that the DJ works their affiliate alone (e.g. “This is Ron 
Baylor here on your Rock Classics station, WKLS Atlanta!!”). 
In addition to the above special functions, the system may allow certain i6420s to operate 
more autonomously.  Instead of receiving its network control command through the satellite 
channel, it may also be setup to receive it’s commands by doing HTTP polls of the uplink control