Alcoma ZENITH 80 - Page 8

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MicrowaveradiorelaylinkZENITH80 
 8/52 1.2
A received signal from the parabolic antenna is led through the diplexer to the receiver. There it is
amplified and mixed to the intermediate  frequency of 3.75 GHz and further amplified. From there the
signalgoestoamodem.
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Figure1 TheblockschematicoftheZENITH80link
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CAUTION
UseonlyprotectedterminalboxmarkedALS1‐GEth(121/516*29)orALS1‐2GEth(121/516*30)
forZENITH80link.
Thereisdangerofequipmentdamageincaseusingotherterminalbox.
MW
Powersuply
Motherboard
Line3+M
g
mt
Power=48V
(36÷72V)
ALS1x
DC‐DCconverter
=48V
Interconnecting
cables
Surge
protection
Muldex
Modem
DBPSK
µP
MW
receiver
MW
transmitter
PLL PLL
‐12V
Z
p
ráva
+12V
+5V
+3
,
3V
+2
,
5V
‐5V
Udet
Interface
RS232C
RSSI
Line3
Line2
Surge
protection
Diagnosti
100
SFP
10/100/1000
GEthswitch
100
Line3+power
DC–DC
converter
+8
,
8V
+5
,
5V
‐5V