User's Manual

2. System Description 2-10
© 2012 Moseley, Inc. All Rights Reserved. 602-16620-01, Rev. A
2.3.5 External AC to DC Converter
The DTV LINK TX and RX both are supplied with a high reliability, universal input
switching power supply capable of operating within an input range of 90 - 264 VAC; 47 -
63 Hz. The input is a standard IEC-320-C14 connector. The output voltage is -48V and
is supplied with the 2-pin, 5mm plug.
2.4 Block Diagram & Functional Components
Figure 2-9 shows the EVENT 5800 digital radio and interfaces from a functional point of
view.
FRAMER
DVB-ASI
DS-3/ES/
STS-1
2xSTM-1/
OC3
4xDS3/ES/
STS1
STM-1/OC3
64 kbps
Voice
16 T1/E1
User 2x
100Base-Tx
IF MODEM
and
Quadplexer
Card
SNMP 2x
100Base-Tx
IDU
CONTROLLER
Card
Optional I/O Cards
(Small Slot)
Standard I/O Cards
Optional I/O Cards
(Large Slot)
Indoor Unit
Multiplexed
IF shielded coax
(TNC)
Transmitter
Up-Converter
& Power Amp
Receiver
LNA & Down-
Converter
350
MHz
140
MHz
Commlink
& Processor
5/10
MHz
Outdoor Unit
Quad
Mux
Tx Out
Ext
Antenna
N-Type
Rx In
Interface
Card
uProcessor
Duplexer
16 MHz
Div-by-4
140 MHz,
350 MHz,
10 MHz,
5.5 MHz,
-48V
ODU RF
Converter
Ref Clk
Figure 2-9. EVENT 5800 Block Diagram
The functional partitions for the I/O, Modem/IF, power supply modules, up/down
converters, and internal RF duplexing partition are shown. EVENT 5800 comes with the
standard I/O capability which can be upgraded. The Modem/IF function is modular
allowing the addition of a second Modem to support protection or ring architectures. The
power supply is similarly modular. In addition, the radio transceivers are interchangeable
allowing use of a single EVENT 5800 in licensed, unlicensed, and short-haul applications
by swapping the RF component.
The Radio Transceiver RF Up/Down Converter provides the interface to the antenna. The
transmit section up converts and amplifies the modulated Intermediate Frequency (IF) of
350 MHz from the IF Processor and provides additional filtering. The receive section down