Comtech EF Data CDM-710G - Manual (Page 28)

CDM-710G High-Speed Satellite Modem Revision 1
Introduction MN-CDM710G
1–2
control, although it can be fully remote-controlled via its RS-485 bus or 10/100 Base-T Ethernet
Interface.
1.1.1 Standard and Optional Features
The CDM-710G operates in DVB-S2 (QPSK, 8PSK, 16APSK, and 32APSK) mode only. The
CDM-710G is operated from the front panel using the keypad and display or remote controlled
via an RS-232 / RS-485 2/4 Wire bus or 10/100 Base-T Ethernet port located on the base unit.
The CDM-710G is available for either 70/140 MHz or L-Band applications. The standard 70/140
MHz Tx-IF port has a BNC female connector that is programmable for either with 50
Ω or 75Ω
impedance operations. Spectral rolloffs of 20, 25, and 35% are available.
1.1.2 Applications
The CDM-710G’s bandwidth and power-efficient operation is ideal for:
• Transmission of non-transport stream data (referred to as Generic Data in DVB-S2)
• Business enterprise data distribution
• Broadband Interactive and Internet services
• Any networking application relying on
o
Point-to-point transmission
o
Point-to-multipoint transmission
o
Arbitrary topology
With a Gigabit Ethernet (GigE) data interface and either a 70/140 MHz (CDM-710G) or L-Band
(CDM-710GL) IF, the CDM-710G is equipped with the
configuration most frequently requested
by users. This is ideal for data transmission formats that take advantage of the Ethernet packets
for digital one-way, two-way and any network applications. The HSSI interface enables IP or
other data formats via a serial interface, and telecom applications are supported with the G.703
interface.
DVB-S2 offers new opportunities for data transmission applications. With
a broad range of modulation and coding formats, it permits the user to
tailor a link for the available bandwidth and power to optimize link
performance. Whether a link is point-to-point or point-to-multipoint, there is a format available to
suit each application.
1
1 The DVB-S2 logo is a trademark of the DVB Digital Video Broadcasting Project (1991 to 1996).