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General Features
SATELLINE-3ASrm is a member of the versatile SATELLINE-3AS radio modem family. It consists of a data modem and a UHF radio receiver in a light-weight single PCB structure which conforms to Eurocard Type B standard.
The circuit blocks of SATELLINE-3ASrm are identical to the corresponding blocks in SATELLINE-3AS radio modem. Thereby, the same operational features, except RS-422/485 serial interface, are available.
Technical Specifications
SATELLINE-3ASrm comply with the following international standards: EN 300 113-1 and EN 300 220-1 (radio requirements) and EN 301 489-1 (EMC-requirements), considering that it will be applied inside the terminal unit.
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RADIO RECEIVER
Frequency Range
Channel Spacing
Number of Channels
Frequency Stability
Sensitivity
Common Channel Rejection
Adjacent Channel Selectivity
Intermodulation Attenuation
Spurious Radiations
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380...470 MHz
12.5 kHz/20 kHz/25 kHz
160 / 80
< ± 1.5 kHz
- 116... –110 dBm (BER < 10 E-3)
> - 12 dB
> 60 dB @ 12,5 kHz, > 70 dB @ 25/20 kHz
> 65 dB
< 2 nW
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MODEM
Interface
Interface Connector
Data Speed of Serial Interface
Data Speed of Radio Interface
Data format
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RS-232
Eurocard connector type B, 32 pins
300 – 38400 bps
19200 bps (25 kHz channel)
9600 bps (12.5/20 kHz channel)
Asynchronous RS-232
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GENERAL
Operating Voltage
Current Consumption (average)
Operating Temperature Range
Antenna Connector
Size H x W x D
Weight
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+ 5.5 ...+ 14 VDC
130 mA (Receive)
< 0.01 mA (in Standby Mode)
-25 °C...+55 °C
MMCX, 50 W, female
80 x 100 x 13 mm (Euro connector excluded)
80 g
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Serial Interface Connector Pinout
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Pin#
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Signal Name
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In/Out
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Level
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Description
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A1
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GND
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-
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GND
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A3
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PWR_ON
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In
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0..+14VD C
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Radio modem On/Off control ( OFF = 0...+0.7VDC, ON = higher than +2.0VDC).
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A14
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PWR_LED
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Out
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High Z / +5V
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POWER LED anode
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A15
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RD_LED
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Out
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High Z / +5V
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RD LED anode
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A17
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GND
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-
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GND
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A23
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PWR_IN
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In
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+ 5.5..14VDC
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Power Supply
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A24
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PWR_IN
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In
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+ 5.5..14VDC
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Power Supply
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B1
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GND
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-
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GND
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B3
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TX
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In
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RS 232
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Data FROM the terminal unit TO the radio modem
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B5
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RTS
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In
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RS 232
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Request To Send FROM the terminal unit. Radio modem ignores this.
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B8
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RX
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Out
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RS 232
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Data TO the terminal unit FROM the radiomodem
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B9
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CTS
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Out
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RS 232
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Clear To Send. This signal indicates that radiomodem is ready to receive data FROM the terminal unit.
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B24
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GND
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-
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GND
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A30 and A6
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PROG
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In
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0..+14VD C
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Must be normally UNCONNECTED or higher than +3.0VDC.
Connect to ground in order to a) access the setup menu,
b) update the program flash
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B18
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FLASH
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In
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0..+14VD C
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Must be normally UNCONNECTED. Connected to PWR_IN
in order to enter the FLASH bootmode programming
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A19
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RSSI
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Out
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0...+4,5VDC
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RSSI analog output, ( option )
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Outside view of the Euro connector
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