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Xts3k Encryption module qtn
Posted: Mon Nov 21, 2005 2:15 pm
by cbus
Guys, anybody know what the module NTN8250G is ?
Thanks
Posted: Tue Nov 22, 2005 10:24 am
by Fuel4300
MOL says its a vocoder board but thats all. I would have to dig out the service manuals to tell what radio - I will when I get home later if some one hasnt come up with a better answer.
Mike
Posted: Wed Nov 23, 2005 1:28 am
by cbus
Fuel4300 wrote:MOL says its a vocoder board but thats all. I would have to dig out the service manuals to tell what radio - I will when I get home later if some one hasnt come up with a better answer.
Mike
thanks Mike
Posted: Thu Nov 24, 2005 6:23 pm
by Zap
Here are the IC's on the VOCODER board:
U401~U403 ___32Kx8 DSP s-ram
U404_________256Kx8 FLASH ROM
U405_________DSP (digital signal processor)
U406_________ADSIC (ABACUS/DSP support IC)
It appears in the XTS3000 service pdf, includes schematic and PC board image.
... but what does it do...
IMBE?
Posted: Thu Nov 24, 2005 7:35 pm
by The Pager Geek
The vocoder does all the audio processing (DSP, IMBE, etc.)
The controller is the human interface (channels, audio amp, volume, buttons, etc)
tpg