Comtech-ef-data DD2401 Manual do Utilizador Página 34
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User Interfaces DD2401 Satellite Demodulator
4-10 MN-DD2401 - Rev. G
In acknowledgment (response) packets, the operational code <OPCODE> field of the message
packet is set to 0 by the receiving devices when the message intended for the device is evaluated
as valid. The device that receives the valid message then exchanges the <SOURCE ID> with the
<DESTINATION ID>, sets the <OPCODE> to zero in order to indicate that a good message was
received, and returns the packet to the originator. This “GOOD MESSAGE” opcode is one of nine
global responses. Global response opcodes are common responses, issued to the M&C
computer or to another device, that can originate from and are interpreted by all Radyne
equipment in the same manner. These are summarized as follows (all opcode values are
expressed in decimal form):
Table 4-5. Response Opcodes
Response Opcode Description
Opcode
Good Message
0000h
Bad Parameter
00FFh
Bad Opcode
00FEh
Bad Checksum
00FDh
Command Not Allowed in LOCAL Mode
00FCh
Command Not Allowed in AUTO Mode
00FBh
Bad Destination
00FAh
Unable to Process Command
00F9h
Packet Too Long
00F8h
The following response error codes are specific to the DD2401/DD2401L:
Response Opcode Description
Opcode
DPARM_MODE_ERROR
0x0600
DPARM_FREQUENCY_ERROR
0x0601
DPARM_DATARATE_ERROR
0x0603
DPARM_SWEEPBOUNDARY_ERROR
0x0604
DPARM_LEVELLIMIT_ERROR
0x0605
DPARM_DEMODULATIONTYPE_ERROR
0x0608
DPARM_CONVDECODER_ERROR
0x0609
DPARM_REEDSOLOMON_ERROR
0x060A
DPARM_DIFFERENTIALDECODER_ERROR
0x060B
DPARM_DESCRAMBLERCONTROL_ERROR
0x060C
DPARM_DESCRAMBLERTYPE_ERROR
0x060D
DPARM_SPECTRUM_ERROR
0x060E
DPARM_BUFFERCLOCK_ERROR
0x0610
DPARM_BUFFERCLOCKPOL_ERROR
0x0611
DPARM_INSERTMODE_ERROR
0x0612
DPARM_FRAMING_ERROR
0x0615
DPARM_OPERATINGMODE_ERROR
0x0616
DPARM_BERMEASUREPERIOD_ERROR
0x0619
DPARM_CIRCUITID_ERROR
0x061A
DPARM_TERRLOOPBACK_ERROR
0x061B
DPARM_BASELOOPBACK_ERROR
0x061C
DPARM_IFLOOPBACK_ERROR
0x061D
DPARM_INTERFACETYPE_ERROR
0x061E
DPARM_NOTIMPLEMENTED_ERROR
0x0622
DPARM_DATAINVERT_ERROR
0x0623
DPARM_SUMMARYFAULT_ERROR
0x0624
DPARM_EXTERNALEXCSOURCE_ERROR
0x0625
DPARM_BUFFERSIZEMSEC_ERROR
0x0629
DPARM_BUFFERSIZEBYTES_ERROR
0x062A
- L-Band and 70/140 MHz 1
- Satellite Demodulator 1
- Warranty Policy 3
- Preface 5
- Copyright 6
- Disclaimer 6
- Record of Revisions 6
- Table of Contents 7
- Introduction 11
- 1.1.1 Reed-Solomon Codec 12
- 1.1.2 Turbo Codec 12
- 1.1.3 8PSK (Optional) 12
- MN-DD2401 – Rev. G 13
- Installation 15
- 2.4 Demodulator Checkout 16
- 2.4.1 Initial Power-Up 16
- 2.3 Mounting Considerations 16
- Theory of Operation 19
- 2 MN-DD2401 - Rev. G 20
- 3.2 DD2401 Reed-Solomon 22
- 3.2.1 Reed-Solomon Codec 22
- 3.2.4 Interleaving 22
- 6 MN-DD2401 - Rev. G 24
- User Interfaces 25
- 2 MN-DD2401 - Rev. G 26
- 8 data bits 26
- no parity 26
- 1 stop bit 26
- 4.3.2 Terminal Screens 27
- 4 MN-DD2401 - Rev. G 28
- 4-6 MN-DD2401 - Rev. G 30
- 4.4.1 Protocol Structure 31
- 4.4.2 Protocol Wrapper 31
- 8 MN-DD2401 - Rev. G 32
- 10 MN-DD2401 - Rev. G 34
- Multi-Drop 35
- Override ID 35
- 12 MN-DD2401 - Rev. G 36
- 4.4.8 RLLP Summary 37
- 14 MN-DD2401 - Rev. G 38
- 4.4.11 Module Command Set 39
- block 40
- 18 MN-DD2401 - Rev. G 42
- 22 MN-DD2401 - Rev. G 46
- 26 MN-DD2401 - Rev. G 50
- 32 MN-DD2401 - Rev. G 56
- 34 MN-DD2401 - Rev. G 58
- 38 MN-DD2401 - Rev. G 62
- <1> 62
- 44 MN-DD2401 - Rev. G 68
- Electrical Interfaces 69
- 5.3 EXT REF 70
- 5.5 RX IN 71
- 5.5.1 L-Band (J4) 71
- 5.6 Remote Port (J5) 72
- 5.7 Remote Addresses 73
- 6.0 Periodic Maintenance 76
- Technical Specifications 79
- 7.5 Physical 80
- Viterbi 81
- 81
- Viterbi Decoder 82
- Reed Solomon 82
- Trellis 84
- Turbo Decoder 86
- 7.8 AGC Curve 90
- Glossary 93
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