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Technical Information
Page 62
Figure 28 Data Output Port Schematic
6.2 Output Drive Capability of Bi-directional Ports
Bi-directional ports can supply an output current of up to 30mA. The output
voltages are 0 (low) and 3.3V (high). Effective load resistance should be in
excess of 100 Ohms.
voltages are 0 (low) and 3.3V (high). Effective load resistance should be in
excess of 100 Ohms.
6.3 DGNSS Port
The DGNSS correction port is intended for connection to a Beacon Receiver.
The port has the same physical characteristics as the bi-directional data ports
as described in the preceding sections. If connection of a beacon receiver is
not required this port can be re-configured as an additional bi-directional port
to IEC61162-2.
The port has the same physical characteristics as the bi-directional data ports
as described in the preceding sections. If connection of a beacon receiver is
not required this port can be re-configured as an additional bi-directional port
to IEC61162-2.
Oscillator
Rectifier
Regulator
Decode
Digital isolation
Transceiver
VISOIN
Encode
Decode
Encode
Decode
ADM2587E
RX_A
TxD
Vcc
DE
Y
Z
A
B
RxD
RE
RX
TX
From UART
Data output port
Isolation Barrier
RX_B
TX_A
TX_B
RX_COM
Encode
VISOOUT
DC to DC Converter
GND1
GND2
Each bi-directional data port is isolated from the other bi-
directional data ports and from the transceiver’s internal
power supply.
directional data ports and from the transceiver’s internal
power supply.
!