RF Technologies ART400, Инструкция по установке, эксплуатации и программированию

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3.9 ANNTENA CONNECTIONS
Antenna connection is made via one or two BNC connectors, the radios can be supplied with
either two connectors for simplex/full duplex two antenna operation or with a single
connector for simplex/semi-duplex single antenna operation. Note that a link has to be set on
the processor PCB inside the radio to protect the receiver front end in single antenna
operation.
3.10 12VDC POWER
Power (Nominal 12VDC) is supplied to the unit through the 2 way pluggable terminal block
connector, polarity is marked on the front panel.
3.11
I2C BUS INTERFACE
An RJ45 connector provides an I2C interface to the radio to allow connection of I/O modules,
please refer to the sales office for details of these other products.
Pin No. Description
1 & 2 Nominal 12VDC direct feed via a fuse & Over voltage Protection
3 & 4 N/C
5 SDA I2C Data Line
6 SCK I2C Clock Line
7 I.O. Reset
8 I.O. Interrupt
9 & 10 Ground
3.12 AUDIO & LINE INTERFACE
A 4 way pluggable terminal block is provided for the connection of external audio signals,
these are connected to 600 ohm isolating transformers inside the unit. The connection details
are marked on the front panel of the radio.
Pin No.
Description
1 & 2 Balanced 600 ohm audio output
3 & 4 Balanced 600 ohm audio input
3.13 SWITCHES
The two front panel BCD switches select channels, or if both are set to zero program mode is
entered.
When viewing the ART400 with the aerial connector(s) at the top the left hand rotary switch
is the "tens" switch and the right is the "units" switch, thus to set channel 37 set the left switch
to 3 and the right to 7.
3.14 CONTROL INTERFACE
An 8 way control interface is a pluggable terminal block that provides the remaining signal
connections, these are the uncalibrated RSSI voltage output, drives for external transmit and
carrier detect LEDs, two digital inputs and two digital outputs. One of the digital inputs (DI0)
is used for keying the transmitter when it is programmed for external audio operation with
the TOX (tone operated switch) turned off. The individual connections are marked on the
front panel.
Pin No. Description
1 Ground
2
RSSI