Technical specifications, 0 introduction, 1 specifications without cable upconverter – Comtech EF Data QAM256 User Manual
Page 42: 1 if interface, 2 baseband interface, 3 remote interface, 4 physical, 2 specifications with cable upconverter
QAM256 Digital Video Modulator and Upconverter
Technical Specifications
TM077 – Rev. 4.0
7-1
Technical Specifications
7
7.0 Introduction
This section defines the technical performance parameters and specifications for the QAM256
Digital Video Modulator and Upconverter.
7.1 Specifications Without Cable Upconverter
Data Rate:
1 - 55 Mbps
Modulation:
4, 16, 32, 64, 128, and 256 QAM (7 Msps Maximum)
Roll Off:
12, 15, and 18% Selectable
FEC:
204/188 Reed-Solomon with I = 1 - 204 programmable
Forney Convolutional Interleaver meets J.83 Annex A,
Annex B
7.1.1 IF Interface
Frequency:
43 – 44 MHz, or optional 35 – 37 MHz, 1 Hz Steps
Level:
0 to –25 dBm
Spurious: -50
dBc
Impedance: 75Ω
7.1.2 Baseband Interface
Format: MPEG-2
Transport
Physical: Parallel,
ASI,
Advanced
ASI, DVB Parallel, M2P Parallel
7.1.3 Remote Interface
RS-485, Terminal RS232, Ethernet, 10 Base-T SNMP
(Optional)
7.1.4 Physical
Chassis Size:
1.75” H x 19” W x 17.75” D
(4.445cm H x 48.26cm W x 48.085cm D)
Power:
100 – 240 VAC, 50/60 Hz or –48 VDC (Optional)
Environmental:
0 - 50°C, < 95% Humidity @ 25°C
7.2 Specifications With Cable Upconverter
Data Rate:
1 - 55 Mbps
Modulation:
4, 16, 32, 64, 128, and 256 QAM (7 Msps Maximum)
Roll Off:
12, 15, and 18% Selectable
FEC:
204/188 Reed-Solomon with I = 1 - 204 programmable
Forney Convolutional Interleaver meets J.83 Annex A,
Annex B