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General Features
SATELLINE-3AS-PT is a member of the versatile SATELLINE-3AS radio modem family. It is a half duplex radio modem operating on the UHF band packed in a light-weight aluminium enclosure. It is intended to be integrated in customer devices, for example RTK systems.
The circuit blocks of SATELLINE-3AS-PT are identical to the corresponding blocks in SATELLINE-3AS radio modem. Thereby, the same operational features, except RS422/485 serial interface, are available.
The differences to SATELLINE-3AS radio modem are:
1. SATELLINE-3AS-PT has a different metal enclosure made of sheet aluminium.
2. The antenna connector is a female MMCX connector instead of TNC .
3. The antenna circuitry of the radio module includes additional filtration on GPS frequencies in order to avoid any possible interference to the GPS receivers that are used in the integrated RTK systems.
4. SATELLINE-3AS-PT does not have any LED indicators, an LCD display, or push buttons.
5. The pinout of the 15 pin D connector is partially different from a standard SATELLINE-3AS(d) radio modem because the physical interface of the secondary serial port is LV-TTL (low voltage TTL) instead of RS232/422/485.
6. The location and the gender of 15 pin D connector are different: the male connector stands out of the lid of the enclosure.
7. The operating voltage range is extended to +6.3...+30VDC from +9...+30VDC.
Technical Specifications
SATELLINE-3AS-PT radio modem shall comply with the following international standards:
• ETS 300 113 and EN 300 220-1 (radio requirements)
• EN 301 489 (EMC-requirements).
• FCC Part 90
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RADIO TRANSCEIVER
Frequency Range
Channel Spacing
Number of Channels
Frequency Stability
Type of Emission
Communication Mode
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380...470 MHz
12.5 kHz/20 kHz/25 kHz
160 / 100 / 80 or (2 x 160 / 2 x 100 / 2 x 80)
< ± 1.5 kHz
F1D
Half-Duplex
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RADIO TRANSMITTER
Carrier Power
Carrier Power Stability
Adjacent Channel Power
Spurious Radiation’s
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10 mW...1 W / 50 Ω
+ 2 dB / - 3 dB
according to EN 300 220-1/ETS 300 113
according to EN 300 220-1/ETS 300 113
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RADIO RECEIVER
Sensitivity
Common Channel Rejection
Adjacent Channel Selectivity
Intermodulation Attenuation
Spurious Radiation’s
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-116... -110 dBm (BER<10 E-3) depending on Receiver settings
> - 12 dB
> 60 dB @ 12,5 kHz, > 70 dB @ 25 kHz/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 / LV-TTL
15 pin female D connector
1200 – 38400 bps
19200 bps (25 kHz channel)
9600 bps (12.5 kHz and 20 kHz channel)
Asynchronous RS-232/LV-TTL
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GENERAL
Operating Voltage
Power Consumption (average)
Operating Temperature Range
Antenna Connector
Housing
Size H x W x D
Weight
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+6.3...+30 VDC
<1.7 VA (Receive)
<5.5 VA (Transmit)
0.05 VA (in Standby Mode)
-25 °C...+55 °C
MMCX, 50 Ω, female
Aluminium enclosure
125 x 64 x 24 mm
appr. 160g
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D15 connector Pinout
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SATELLINE-3AS-PT : Pinout of the 15-pin female D connector
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Pin
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Signal Name
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Direction
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Level
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Description
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1
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DTR
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Input
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RS232C/LV-TTL
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Data To Terminal - can be used to wake-up the radio module from the standby mode.
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2
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CTS_TTL
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Output
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LV-TTL
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Clear To Send from the radio modem.
This signal indicates that radio modem is ready to take data from the user device.
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3
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RX_TTL
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Output
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LV-TTL
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Data TO the user device FROM radiomodem
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4
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TX_TTL
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Input
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LV-TTL
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Data FROM the user device TO radio modem
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5
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RTS_TTL
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Input
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LV-TTL
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Request To Send FROM the user device
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6
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CTS_232
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Output
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RS232C
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Clear To Send from the radio modem.
This signal indicates that radio modem is ready to take data from the user device.
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7
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GND
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GND
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GND
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Ground
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8
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GND
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GND
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GND
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Ground
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9
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RX_232
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Output
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RS232C
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Data TO the user device FROM radio modem
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10
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Flash
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Enable pin for the master flash procedure.
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11
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TX_232
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Input
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RS232C
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Data FROM the user device TO radio modem
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12
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PROG
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Input
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Programming pin for configuring/re-flashing the radio modem in the programming mode.
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13
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RTS_232
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Input
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RS232C
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Request To Send FROM the user device.
The radio modem ignores this currently.
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14
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PWR
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PWR
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6.3 to 30 VDC
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Power Supply
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15
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PWR
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PWR
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6.3 to 30 VDC
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Power Supply
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