AMT-70/AMT-73/AMT-75 Installation and Operation
HSSI (High Speed Serial Interface) is also available: the base AMT-70 supports HSSI operation up
to 60 Mbps (higher speeds are available with option cards). The DVB/ASI interface can also be
supported. Two ASI connectors are provided; one for the modulator data input and one for the
demodulator data output.
The Modem can be controlled and monitored via a variety of protocols from simple RS232, RS485
or Telnet Command Line Interface (CLI), RS485 Packet Protocol, SNMP via Ethernet or Web-
server.
The AMT-70 series modems are powered from a universal power supply with a range from 96 to
263 VAC, 47-63 Hz. The modem is also capable of powering an LNB/BDC (24 VDC, 0.45 A) if this
power supply is fitted.
Finally, the standard BUC power supply produces 24 VDC at a maximum of 3.5 A (Max 110 W).
Optionally, the BUC power supply can be upgraded to 48 VDC, 2.2 A.
1.2.2 AMT-73L Description
The AMT-73L product has one modulator and demodulator. It fully meets MIL-STD-188-165A
standard.
It has the following features:
L-Band output of 950-2000 MHz, tunable in 1 Hz steps;
L-Band input of 950-2000 MHz tunable in 1 Hz steps
Optionally support to 2050MHz on both TX and RX
Optional IF interface: 70+/-18 MHz, 140+/-36 MHz
Optional provision of DC power and reference for Low Noise Block Down Converter (LNB) /
Block Down Converter (BDC) and Block Up Converter (BUC)
FEC: RSV (both Intelsat and DVB-S/DSNG) and eTPC
BPSK/QPSK/8PSK/16QAM/OQPSK modulation
FFT Technology for reliable acquisition
Occupies 1 Rack Unit (RU) of Rack Space (1.75”)
Power Consumption less than 60 W (not including BUC power supply)
Full Monitor and Control Capability using a VT100 type (RS-232) terminal,
Telnet, FTP, (10/100 Base-T Ethernet), and command mode (RS-485).
Optional 48 VDC input power
Optional BUC power supply voltages and currents
EIATIA-449, HSSI and Ethernet data interfaces supported
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On the back panel, there are 10/100 Base-T Ethernet, RS-232 and RS-485 serial bus (M&C)
interfaces. An Alarm/Relay connector provides simple redundancy switching capability.
The modem’s standard data interface is a synchronous EIA/TIA-449 interface (37-D-sub connector).
HSSI (High Speed Serial Interface) is also available: the base AMT-73L supports HSSI operation up to
52 Mbps (higher speeds are available with other option cards). The AMT-73 series are powered from a
universal power supply with a range from 96 to 263 VAC, 47-63 Hz.
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General