
AMT-70/AMT-73/AMT-75 Installation and Operation
TECHNICAL SPECIFICATIONS (AMT-75)
The specifications listed for the Modulator are just for the DVB-S2 option. The
modulator can also support all of the AMT70 options listed in the AMT70 technical
specification.
24
DESCRIPTION
SPECIFICATION
MODULATOR
Data Rate
64 Kbps to 140 Mbps
Data Rate Options
16kbps to 10Mbps, 20Mbps, 52Mbps and 140Mbps
Symbol Rate
128 KSymbol to 40 MSymbol
Data Interfaces
RS 530 / V35 (standard)
ASI (optional)
Single HSSI interface(standard)
Triple HSSI (optional)
Ethernet 10/100BaseT (optional)
G.703 (optional)
1 to 8 X E1/T1 (optional)
Local / Remote Monitor & Control Interfaces
9 pin D-sub (F) for RS-232 Serial interface
9 pin /d-sub (F) for RS-485 Serial interface (Terminal mode and packet
protocol mode)
15 pin D-sub (F) for Alarm interface (switch-over contact)
RJ-45 10/100BaseT Ethernet
Data Connector
25 pin, D-sub (F), standard for RS530 Data interface
BNC (F) - 75
Ω
for ASI and E3/T3 G.703 interfaces
50 pin SCSI-2 connector (F) for HSSI Data
RJ-45 for Ethernet option and for balanced bi-directional E1/T1 interface
with Octal E1/T1 card
Data Clock Source
Modulator will be defined as Data Communications Equipment (DCE)
DVB-S2 Modulation Type & FEC Rate
Continuous Wave (CW)
QPSK:
64Kbps to 70Mbps
DVB-S2 SHORT and NORMAL FEC Block
SHORT Block 16kbit ¼,
1
/
3
,
2
/
5
,
1
/
2
,
3
/
5
,
2
/
3
,
4
/
5
,
5
/
6
,
8
/
9
NORMAL Block 64kbit ¼,
1
/
3
,
2
/
5
,
1
/
2
,
3
/
5
,
2
/
3
,
4
/
5
,
5
/
6
,
8
/
9
,
9
/
10
8PSK:
256kbps to 110Mbps
DVB-S2 SHORT and NORMAL FEC Block
SHORT Block 16kbit
3
/
5
,
2
/
3
,
3
/
4
,
5
/
6
,
8
/
9
NORMAL Block 64kbit
3
/
5
,
2
/
3
,
3
/
4
,
5
/
6
,
8
/
9
,
9
/
10
16APSK:
340kbps to 140Mbps
DVB-S2 SHORT and NORMAL FEC Block
SHORT Block 16kbit
2
/
3
,
3
/
4
,
4
/
5
,
5
/
6
,
8
/
9
NORMAL Block 64kbit
2
/
3
,
3
/
4
,
4
/
5
,
5
/
6
,
8
/
9
,
9
/
10
Modulation Roll-Off Factor
12% to 35% with 1% resolution
Summary of Contents for AMT-70
Page 34: ...AMT 70 AMT 73 AMT 75 Installation and Operation 34 This page has been left intentionally blank...
Page 35: ...AMT 70 AMT 73 AMT 75 Installation and Operation 35 This page has been left intentionally blank...
Page 36: ...AMT 70 AMT 73 AMT 75 Installation and Operation 36 This page has been left intentionally blank...