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VP310 Scheda tecnica(PDF) 19 Page - Mitel Networks Corporation

Il numero della parte VP310
Spiegazioni elettronici  Satellite Channel Decoder
PDF  31 Pages
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Produttore elettronici  MITEL [Mitel Networks Corporation]
Homepage  http://www.mitel.com
Logo MITEL - Mitel Networks Corporation

VP310 Scheda tecnica(HTML) 19 Page - Mitel Networks Corporation

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VP310
PRELIMINARY DATA
19
2.4 Channel change sequence with a new symbol rate
If the VP310 is running, to change channel and Symbol rate but not Viterbi coding rate, change
the tuner data and possibly the DiSEqC data and Symbol rate. NO reset is necessary.
Program tuner via GPP in 'pass through mode'
open port with Reg 20 = 64 (40hex)
send TUNER DATA via I2C bus (5 bytes).
close port with Reg 20 = 0
DiSEqC mode
eg Horizontal with 22kHz on:
Reg 22 = 65 (41hex)
Signal input - Symbol rate
eg 22.0 MBaud :
Reg 23 = 22 (16hex)
Reg 24 = 0
Viterbi code rate
eg V_IQ swap not set, CR = 5/6:
Reg 25 = 8 (8hex)
GO
Re-acquire signal
Reg 27 = 1
Figure 15. Channel change sequence with new Symbol rate, DVB mode.



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