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2-6 Overview
SG4000 Installation and Operation Manual
Model Description Function
LME-100-*
Forward
equalizers
Used to increase the output tilt of the receiver in a 1 GHz system.
They are available in 1 dB increments from 3 dB through 10 dB.
ICS II
Ingress switch This switch enables the operator to troubleshoot without shutting
down the return path. It requires the use of either the LL-SG4/* or the
SG4-EPIM.
SG4-R/*
Lightwave
receiver
This receiver converts the received optical signal to broadband RF.
SG4-*
Analog return
transmitters
Refer to the list provided in Section 4, “Modules.”
SG4-FSB
Flatness slope
board
Provides slope for individual RF modules.
Electronics Package
Individual RF modules that provide superior port-to-port isolation and improved reliability now
replace the traditional one-piece electronics package. Connections to the RF modules are made
with double-shielded RG 179 RF cables for the forward and return path signals.
The individual RF modules can be driven by multiple combinations of receivers, transmitters,
and plug-in configuration boards.
Forward Band
Forward band configurations use up to four SG4-R receivers in the following combinations:
Split
Four common RF outputs are served by a single SG4-R/* receiver.
Split redundant
Four common RF outputs are served by either of two SG4-R/* receivers.
Segmented 2X
Two SG4-R/* receivers – each drives one pair of RF outputs.
Segmented 2X redundant
Two pairs of SG4-R/* receivers – each pair drives one pair of RF outputs.
Segmented 4X
Four SG4-R receivers each drive an individual RF output.
Return Band
Return band configurations use up to four analog optical transmitters in the following
combinations:
Combined Single
All four RF returns are combined and are input to a single return transmitter.
Combined redundant
All four RF returns are combined and are input to two return transmitters.
Split
Two pair of RF returns are combined and each is input to a return transmitter.
Split redundant
Two pair of RF returns are combined and each is input to two return transmitters.
Segmented
Each RF return is input to a dedicated return transmitter.
- Installation and 1
- Operation Manual 1
- FDA Compliance 3
- Contents 4
- Modules 5
- Installation 6
- Figures 6
- Contents v 8
- Introduction 10
- Figure 1-2 11
- SG4000 – open 11
- Using this Manual 12
- Related Documentation 12
- Document Conventions 13
- If You Need Help 13
- Calling for Repairs 14
- Overview 15
- Housing 16
- Figure 2-3 17
- Housing port locations 17
- Gaskets 18
- Weather gasket 18
- (silicone rubber) 18
- RF gasket 18
- (woven wire) 18
- Network Monitoring 19
- Options and Accessories 19
- Electronics Package 20
- Figure 2-5 21
- Figure 2-6 22
- Configuration 23
- Bandpass Frequency 24
- Station Slope 24
- Bandpass Frequency Splits 25
- Level Control 26
- Port Entry 27
- Figure 2-10 28
- Bench Setup and Operation 29
- Figure 3-2 30
- Forward Path Configuration 31
- Forward Split 33
- Loss = 8.7 dB 34
- Forward Redundant Split 36
- PRI) and secondary (SEC) 38
- SW1 AUTO position 39
- Forward Segmented 2X 40
- Figure 3-14 43
- SEC RX PRI RX 44
- SW2 AUTO position 46
- Forward Segmented 4X 47
- Loss = 2.7 dB 48
- Return Path Configuration 50
- Combined Return 52
- Loss = 0.9 dB 53
- Combined Redundant Return 55
- Split Return 58
- Split Redundant Return 61
- Segmented Return 64
- Power Distribution Board 67
- Figure 3-37 68
- Power distribution board 68
- Figure 3-38 69
- SG4000 – fuse locations 69
- of the housing base. 20 A 70
- Power Supply Operation 71
- Ensure shunt F1 (30 A): 72
- 4-2 Modules 74
- SG4-R/* Optical Receiver 75
- 4-4 Modules 76
- 4-6 Modules 78
- Figure 4-4 79
- Figure 4-5 79
- SG4-* transmitter 79
- SG4-IFPT Optical Transmitter 80
- SG4-DFBT Optical Transmitter 81
- SG4000 RF Module 82
- Modules 4-11 83
- FSB Board 84
- SG4-PS Power Supply 85
- Adding Power Supply Modules 86
- Embedded Plug-in Module 87
- 4-16 Modules 88
- RF port 1 88
- RF port 6 88
- Ingress Control 89
- Status Monitoring 89
- Parameter 90
- Fiber Cables 92
- Figure 5-3 93
- Fiber management tray 93
- Figure 5-2 93
- 5-4 Installation 94
- Clamps Clamp 95
- 5-6 Installation 96
- Pedestal Mounting 97
- Grounding the SG4000 98
- Coaxial Cable Installation 99
- Closing the Housing 100
- Specifications 101
- A-2 Specifications 102
- Specifications A-3 103
- A-4 Specifications 104
- Torque Specifications 105
- Abbreviations and Acronyms 106
- Abbreviations and Acronyms-2 107
- 529086-001 108
- Visit our website at: 108
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