Comtech EF Data DMD20 User Manual
Page 5
MN-DMDREMOTEOP Revision 9
iii
Table of Contents
PREFACE .................................................................................................................................... V
About this Manual ...................................................................................................................................... v
Patents and Trademarks ............................................................................................................................ v
Product Support .......................................................................................................................................... v
Safety Compliance ..................................................................................................................................... vi
Warranty Policy ........................................................................................................................................ vii
CHAPTER 1. REMOTE OPERATIONS ................................................................................. 1–1
1.1
Introduction ................................................................................................................................. 1–1
1.2
Modem Remote Communications (RLLP): .............................................................................. 1–1
1.2.1
Protocol Structure: ................................................................................................................ 1–2
1.2.2
Protocol Wrapper: ................................................................................................................. 1–2
1.2.3
Frame Description and Bus Handshaking: ............................................................................ 1–4
1.2.4
Global Response Operational Codes:.................................................................................... 1–5
1.2.5
Collision Avoidance:............................................................................................................. 1–7
1.2.6
Software Compatibility: ........................................................................................................ 1–8
1.2.7
Flow Control and Task Processing: ...................................................................................... 1–9
1.2.8
RLLP Summary: ................................................................................................................. 1–10
1.3
Remote Port Packet Structure: ................................................................................................ 1–10
1.4
DMD20 Opcode Command Set: .............................................................................................. 1–11
1.4.1
Modem Command Set: ....................................................................................................... 1–12
1.5
Detailed Command Descriptions: ............................................................................................ 1–15
1.5.1
DMD20 Modulator: ............................................................................................................ 1–15
1.5.2
DMD20 Demodulator: ........................................................................................................ 1–44
1.5.3
Modem Queries & Commands: .......................................................................................... 1–74
Bit 0 = Transmit FPGA/Processor Fault ......................................................................... 1–75
CHAPTER 2. SNMP (MIB) .................................................................................................... 2–1