Comtech EF Data DMD2401/DMD2401L - Manual (Page 8)

DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Table of Contents
TM065 - Rev. 3.3 vii
Table of Contents
Section 1 – Introduction
1.0 Description _____________________________________________________ 1-1
1.1 DMD2401 Available Options ________________________________________ 1-2
1.1.1 Reed-Solomon Codec ___________________________________________ 1-2
1.1.2 Sequential Decoding ____________________________________________ 1-2
1.1.3 Asynchronous Overhead Channel __________________________________ 1-2
1.1.4 Customized Options _____________________________________________ 1-3
1.1.5 8PSK Modulation _______________________________________________ 1-3
1.1.6 Analog AGC Voltage ____________________________________________ 1-3
1.1.7 Drop and Insert (D&I) ____________________________________________ 1-3
1.1.8 Turbo Product Codec (TPC) ______________________________________ 1-3
Section 2 – Installation
2.0 Installation Requirements __________________________________________ 2-1
2.1 Unpacking ______________________________________________________ 2-1
2.2 Removal and Assembly____________________________________________ 2-1
2.3 Mounting Considerations___________________________________________ 2-2
2.4 Modulator Checkout ______________________________________________ 2-2
2.4.1 Initial Power-Up ________________________________________________ 2-2
Section 3 – Operation
3.0 Theory of Operation ______________________________________________ 3-1
3.1 DMD2401 Operation ______________________________________________ 3-1
3.2 Applications _____________________________________________________ 3-1
3.2.1 SCPC Point-to-Point Links ________________________________________ 3-1
3.2.2 SCPC Point to Multi–Point Links in a Broadcast Application ______________ 3-2
3.2.3 DAMA (Demand Assigned Multiple Access) __________________________ 3-2
3.2.4 TDMA (Time Division Multiple Access) Remote Site Application___________ 3-2
3.3 DMD2401 Initial Configuration Check _________________________________ 3-3
3.4 DMD2401 Automatic Uplink Power Control (AUPC Operation) _____________ 3-3
3.5 DMD2401 Asynchronous Overhead Operation__________________________ 3-4
3.5.1 Asynchronous Framing/Multiplexer Capability _________________________ 3-4
3.6 Standard IBS Mode _______________________________________________ 3-6