AMT-70/AMT-73/AMT-75 Installation and Operation
TECHNICAL SPECIFICATIONS (AMT-73L)
19
DESCRIPTION SPECIFICATION
MODULATOR
Data Rate (mandatory)
BPSK
QPSK/OQPSK
8PSK/TCM
8PSK/16QAM
64 Kbps to 8472 kbps
64 kbps to 20,000 kbps
1,544 kbps to 51,840 kbps
Up to 52 Mbps using eTPC and HSSI interface
Up to 110Mbps in optional 16QAM Turbo mode
Data Rate Options available 16kbps to 10Mbps, 20Mbps, 52Mbps and 140Mbps
Symbol Rate 32 KSymbol to 40 MSymbol
Data and Clock Interfaces EIA/TIA 449 with MIL-STD-188-114
Single HSSI interface
10/100 Base-T Ethernet data interface (optional)
Data Connectors 37 pin, D-sub (F), standard for EIA/TIA 449 Data interface
25 pin, D-sub (F), optional for RS530 Data interface
50 pin SCSI-2 connector (F) for HSSI Data
RJ-45 for Ethernet option
Data Clock Source Internal or External (internal clock to be extracted from data, with up to 50
consecutive 1s or 0s, which occurs no more than once in 10 kbits, and data is
within 100 ppm)
Data and Clock Timing Jitter, Input Max of 10% of bit period
Demand Clock
Accuracy
Distortion
1 x 10
-7
Stability 1 hr after warm-up
1 x 10
-8
Stability/day (accuracy shall conform to external reference w/o warm-up)
Per EIA-334, or 5 nanoseconds, whichever is greater
Data Scrambling Modes No Scrambling
IESS-308; IESS-309; IESS-310
OM-73(V)/G (BPSK, QPSK and OQPSK)
Differential Encoding Modes Off; per IESS-308/309/310; special per MIL-STD-188-165A for BPSK/OQPSK
Local / Remote Monitor & Control Interfaces 9 pin D-sub (F) for RS-232 Serial interfaces
15 pin D-sub (F) for Alarm interface (switch-over contact)
Modulation Type & FEC Rate
Continuous Wave (CW)
BPSK:
Intelsat 1/2,3/4,7/8 Viterbi
DVB 1/2, 2/3, 3/4, 5/6, 7/8 Viterbi with RS (204,188) Outer Code, Optional
eTPC Rate 2/5 ,3/5, 3/4, 4/5, 7/8, 8/9, 19/20 (refer to Chapter 9)
QPSK / OQPSK:
Intelsat 1/2, 3/4, 7/8
Selectable Intelsat (219,201) for data rates 512 kbps or RS (126,112) Outer
Code (QPSK only) for data rates 512 kbps
DVB 1/2, 2/3, 3/4, 5/6, 7/8 with RS (204,188), Optional
eTPC Rate 2/5, 3/5, 3/4, 4/5, 7/8, 8/9, 19/20, (refer to Chapter 9)
8PSK:
Intelsat IESS-310 2/3 PTCM Inner code
Selectable Intelsat (219,201) or RS (126,112) Outer Code
DVB-DSNG PTCM Rate 2/3, 5/6, 8/9 with RS(204,188), Optional
eTPC Rate 3/5,3/4, 4/5, 7/8, 8/9, 19/20, (refer to Chapter 9)
16QAM, Optional:
DVB-DSNG PTCM Rate 3/4, 7/8 with RS(204,188) code
eTPC Rate 3/4, 4/5, 7/8, 8/9, 19/20 (refer to Chapter 9)
Modulation Roll-Off Factor 23% Alpha Raised Cosine Filter to MIL-188-165A standard
Modulation Timing Jitter < 3% peak of modulation symbol period
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