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Codan 6700 Series User Manual
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Maintenance and fault finding
92
Block Up Converter Systems 6700/6900 series User Guide
Figure
21:
BUC fault diagnosis chart
6
BUC fault
diagnosis chart 6
Check for presence of
Tx IF from modem at
both ends of the Tx IF
cable (Test D)*.
OK?
Is the
transmit
attenuator setting
correct?
* Refer to test
procedures
BUC faulty.
Refer to Codan.
Set the correct
transmit attenuator
setting using
STA
command.
Modem, any other
device on IF cable, or
cable faulty. Replace
as required.
Yes
Yes
No
No
101
103
Table of Contents
Default Chapter
3
Table of Contents
3
1 Overview
14
Introduction
14
BUC System Configuration
15
Figure 1: BUC with L-Band Modem and LNB
15
Figure 2: BUC with L-Band Modem, External In-Line PSU
16
Buc
17
Transmit Frequency Bands
17
Frequency Conversion Plans
17
Table 1: Transmit Frequency Bands for C-Band and
17
Table 2: Frequency Ranges for C-Band Bucs (Standard)
18
Figure 3: C-Band Frequency Conversion Plan at an lo
19
Table 3: Frequency Ranges for C-Band Bucs (Extended)
19
Figure 4: C-Band Frequency Conversion Plan at an lo Frequency of 7375 Mhz
20
Figure 5: C-Band Frequency Conversion Plan at an lo Frequency of 7600 Mhz
20
Figure 6: C-Band Frequency Conversion Plan at an lo Frequency of 7675 Mhz
21
Table 4: Frequency Ranges for Ku-Band Bucs (Standard)
21
Figure 7: Ku-Band Frequency Conversion Plan for Bucs that Cover the Standard Frequency Band
22
Table 5: Frequency Ranges for Ku-Band Bucs (Extended)
22
Power Supply Options
23
Figure 8: Ku-Band Frequency Conversion Plan for Bucs that Cover the Extended Frequency Band
23
Table 6: Power Supply Options for Bucs
23
Lnb
25
Table 7: Frequency Band Options for the Ku-Band LNB
25
Redundancy Systems
26
The Redundancy Controller
27
Figure 9: Control Panel on the Redundancy Controller
28
Figure 10: Connector Panel on the Redundancy Controller
29
How the Redundancy Controller Works
30
RF Waveguide Switches
33
The Remote Controller 6570 and Hand-Held Controller 6560
36
2 Installation
37
Unpacking the Equipment
38
Installing the BUC Equipment
38
Table 8: Pinouts of the AC INPUT Connector
41
Cable Recommendations
42
Table 9: Recommendations for if Coaxial Cables
42
Cable Lengths
43
Table 10: Cable Lengths Resulting in a 20 Db Loss
43
IF Levels
44
Figure 11: if Levels Required for Short Cables
45
Figure 12: if Levels Required for Long Cables
46
Serial Interfaces
47
RS232 Interface
47
RS422/485 Interface
48
FSK Interface
48
Connecting the Serial Interface
49
Permanent Interface Connection
49
Temporary Interface Connection
49
Monitor and Control Interface of the BUC
50
Figure 13: Monitor and Control Interface of the BUC
51
Installing the Redundancy System
52
Mounting the Redundancy Controller
52
Installing Separate Transmit and Receive RF Waveguide Switches
52
Installing the Combined RF Waveguide/Coaxial Switch (C-Band Transmit/Receive Systems Only)
55
Connecting the Power Cables
57
Connecting the Control Cables
58
Connecting the if from the Redundancy Controller to the Bucs
58
Connecting the if Cables between an L-Band if Modem (or Other Equipment) and the Redundancy Controller
58
Connecting the if from the Lnbs to the Redundancy Controller
59
Grounding the Installation
59
Serial Interfaces of the Bucs from the Redundancy Controller
60
Accessing the Auxiliary I/O Interface on the Redundancy Controller
61
Figure 14: Auxiliary I/O Interface of the Redundancy Controller
62
Setting up the Redundancy Switching Equipment
63
3 Setting up and Operating the BUC System
67
Switching on the BUC
68
LED Indicators
69
Table 11: LED Indicators on the BUC and Their States
69
Table 12: LED Indicators on the Control Panel of the Redundancy Controller
70
Serial Interface Monitor and Control
72
Serial Interface Commands
73
Table 13: Help Commands
74
Table 14: Set Commands
75
Table 15: Output Commands
82
Table 16: View Commands
83
Table 17: Reset Commands
84
Switching the Redundancy System on and off
86
Checking the Operation of the LED Indicators and Controls
86
Switching between Streams
86
Controlling the Redundancy System
88
4 Maintenance and Fault Finding
91
Precautions
92
Connections to Power Supplies
92
Servicing Requirements
92
RF Waveguide Switches
92
Table 18: Fuses in the Redundancy Controller
93
Fuses and Overcurrent Protection in the Redundancy Controller
93
If Technical Assistance Is Required
94
Finding Faults in the BUC System
95
Using the BUC Fault Diagnosis Charts
95
Figure 15: Main BUC Fault Diagnosis Chart
96
Figure 16: BUC Fault Diagnosis Chart 1
97
Figure 17: BUC Fault Diagnosis Chart 2
98
Figure 18: BUC Fault Diagnosis Chart 3
99
Figure 19: BUC Fault Diagnosis Chart 4
100
Figure 20: BUC Fault Diagnosis Chart 5
101
Figure 21: BUC Fault Diagnosis Chart 6
102
Figure 22: BUC Fault Diagnosis Chart 7
103
Figure 23: BUC Fan Fault Diagnosis Chart 1
104
Figure 24: BUC Fan Fault Diagnosis Chart 2
105
Figure 25: LNB Fault Diagnosis Chart
106
Test Procedures
107
Table 19: Test a
107
Table 20: Test B
107
Table 21: Test C
108
Table 22: Test D
108
Table 23: Test E
108
Table 24: Test F
109
Finding Faults in the Redundancy Switching Equipment
110
Replacing Fuses in the Redundancy Controller
112
Resolving Inconsistent Stream Selections
113
Finding Faults in an RF Waveguide Switch
113
Figure 26: RF Waveguide Switch Fault Diagnosis Chart
114
Table 25: Resistance of Coils When the RF Waveguide
115
Finding Faults in the Redundancy Controller
117
Disconnecting a Faulty BUC
117
Reverting to a Single-BUC Earth Station
118
Table 26: Tell-Back Contacts for Switch Positions 1 and 2
118
Finding Faults in the Remote Controller
119
Figure 27: Remote Controller Supply Fault Diagnosis Chart
120
Appendix A-Buc Model and Redundancy System Numbers
121
Figure 28: Segments of the BUC Model Number
121
Table 27: Definition of the BUC Model Number
121
Numbers
122
Figure 29: Segments of the Redundancy System Number
123
Numbers
123
Table 28: Definition of the Redundancy System Number
123
Numbers
124
Appendix B-Example Outputs for the View Commands
125
Commands
126
Commands
127
Commands
128
Appendix C-Compliance
130
Introduction
130
European R&TTE Directive
131
Electromagnetic Compatibility and Safety Notices
133
Appendix D-Definitions
138
Standards and Icons
138
Acronyms and Abbreviations
139
Units
141
Unit Multipliers
142
About this Issue
143
Index
145
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Codan 6700 Series Specifications
General
Brand
Codan
Model
6700 Series
Category
Media Converter
Language
English
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