Comtech EF Data CDM-700 - Manual (Page 143)

10–1
Chapter 10. SUMMARY OF
SPECIFICATIONS
10.1 Summary of Specifications
Table 10-1. Summary of Specifications
Item Requirement
Data Rate Range Up to155 Mbps within symbol rate range in 1 bps steps, depending on data
interface
(Refer to 10.2)
Symbol Rate Range 1 to 64Msps
Data Rate Programmable At Data Interface
Modulation Types QPSK, 8-PSK, 16-QAM, or 64-QAM
Alpha 25% or 35% mask per DVB per Figure 10-1 and Table 10-2
FEC type 3/4, 7/8 (20/23 actual)
M&C / Remote Interface 10/100BaseT with HTTP, SNMP and Telnet or RS-232/485
Latency <20 ms at 10 Mbps (see Chapter 7)
Reflash FTP Ethernet (rear panel)
Frequency Reference:
Internal Reference
External Clock
External Ref
Selectable
10 MHz for data and IF, stability
±1.5 ppm
For data interfaces only, not IF. Clock Input depends upon data interface
module.
None (off), 1, 2, 5, 10 or 20 MHz for IF, internally phase locked. Input is 50 /
75
Ω compatible with 0.5 to 4.0 V pp sine or square wave. Requires high
stability source.
Form C Modulator fault and demodulator fault
Multiplexing Overhead ≤ 2.5%
Agency Approval Safety, conducted and radiated emissions (Class B) and Immunity sufficient
for
CE certification