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3.0 INTERNAL BLOCK DIAGRAMS
DVI-7380-TX Internal Block Diagram
The DVI-7380 utilizes advanced fiber optic technology to extend DisplayPort
and other AV signals over a single optical fiber. The TX accepts a DisplayPort
input signal, which is sent to a receiver chip and then to a 4-channel optical
transmitter utilizing wavelengths of 1270nm / 1290nm / 1310nm / 1330nm. At
the same time the IR, RS-232 and Ethernet signals are combined in a SERDES
and sent to a 2-channel optical transceiver using a wavelength of 1550nm. All
optical output channels are combined into a single optical output signal with
their respective wavelengths using a CWDM module (Coarse Wave Division
Multiplexing). These optical output signals are connected to the RX unit via
a single optical cable, which can span distances of up to 5.0 miles (> 8,000
meters). In addition to the optical output signals, the TX also accepts an
optical input signal from the RX for IR, RS-232, Ethernet and AUX Channel
communications using a wavelength of 1490nm.
DVI-7380-RX Internal Block Diagram
The RX accepts optical signals from the TX using multiple wavelengths over a
signal optical fiber. These signals are connected to a CWDM module (Coarse
Wave Division Multiplexing), which provides discrete optical outputs to a
4-channel optical receiver utilizing wavelengths of 1270nm / 1290nm / 1310nm /
1330nm. Using a DisplayPort transmitter chip, these signals, together with the
AUX Channel signals, are sent to the DisplayPort Output port. At the same time,
the combined IR, RS-232 and Ethernet signals are sent to a 2-channel optical
SERDES
4 Channel
Optical
Transmitter
2 Channel
Optical
Transceiver
CWDM
1270 / 1290 /
1310 / 1330 nm
Data
Retiming
Ethernet
Switch
DisplayPort RX
Digital video in
Optical Out
Ethernet 1 / 2
RS-232
IR Out
IR In
DisplayPort In
AUX Channel
AUX Channel
To RX
1550 nm
1490 nm
SERDES
1270 / 1290 /
1310 / 1330 nm
Data
Retiming
Ethernet
Switch
DisplayPort TX
Digital video out
2 Channel
Optical
Transceiver
4 Channel
Optical
Receiver
Optical In
Ethernet 1 / 2
RS-232
IR Out
IR In
DisplayPort Out
AUX Channel
AUX Channel
1550 nm
1490 nm
From TX
CWDM
