Wegener Communications user manual iPump6420 File Insertion Timing Model

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800070-01 Rev B

Chapter 3, Page 82

Wegener i6420 Store/Forward Local File Insertion Timing Model*

Audio & closure inputs to Compel & MPEG audio		* Example only, not to scale
compression system from customer automation system
Music track	Network commercial spot [avail]	Music track	Audio input

PIO input (to activate COMPEL macros)

seconds	0	60
	Closure #1		Closure Event causes insertion request macro in Compel
	Pulse

Live audio delay = uplink compression system delay + satellite delay + iPump audio buffer delay

I6420 audio decoder outputs to internal mixer

Decoded
Live Audio	Music track	Network commercial spot [avail]		Music track
to mixer		Insert timing error
		Insertion Timing error = COMPEL-cmd’d Insertion delay – Live audio delay
		{ Insertion Timing error = (NETCON delay + iPump COMPEL cmd delay) - U/L compression delay
Decoded		Spot insert
File audio	Nil			Nil
		(60 seconds)
to mixer
		COMPEL-cmd’d	= satellite delay + NETCON delay + iPump COMPEL Cmd delay + iPump audio buffer delay
		Insertion delay
		Insert begins per	Insert ends at end of	Rev 7/22/09
		Closure #1	local file	9:53 AM

Figure 3-17: iPump6420 File Insertion Timing Model	iPump 6420 User’s
	Manual