Forward Path RF Configuration | Motorola SG 2000 manual

Section 5

Operation

This section provides information concerning the use of various options and applications required by your system. It may be helpful to refer to Figures 3-1 and 3-2 that illustrate the major components in the SG 2000 lid and RF chassis.

Forward Path RF Configuration

You can configure the SG2-lid motherboard (LIDB) using three different forward path RF options.

Single Receiver Mode

If you are using a single optical receiver module (SG2-LR) it must be installed in position C. An SG2-FJB/P jumper board must also be plugged into the LIDB. Figure 3-1 illustrates the location of this jumper board.

The SG2-LIDB distributes an RF signal from the primary receiver (C) to the RF chassis as illustrated in Figure 5-1:

Figure 5-1 Single receiver

Optical

receiver C

Optical

receiver B

Optical

receiver A

	SG2-FJB/P
JXP	JXP	A	RF chassis

JXP

Relay

JXP

SG 2000 Installation and O peration Manual

Image 65

Motorola SG 2000 operation manual Forward Path RF Configuration, Single Receiver Mode

Contents

A R L I N E Special Symbols that Might Appear on the Equipment Contents E r a t i o n Installation Torque Specifications Abbreviations and Acronyms Specification s SG2-LR Tables N t e n t s SG 2000 closed Section SG 2000 open Features include Related Documentation Using this Manual Bold type Document ConventionsIf You Need Help Calling for Repairs Mounting Holes HousingSG 2000 housing dimensions front and side view Port locations Port Locations Gaskets Housing gaskets SG2-PS2 power supply Power Supply Network Monitoring Configuration To suit system requirements the RF chassis cover. notation Forward Path Signal flow diagram E r v i e w SG2-LR Receiver SG2-LR receiver functional diagram Analog Return Transmitters Analog Return PathModel Description Analog return transmitters JXP SG2 transmitter block diagram Digital return transmitters Digital Return Path DS-SG2-DRT-2X/A Options and accessories Options and AccessoriesLevel Control Model Description Function SG2-PS2 SG2-SBSG2 SG2-FE Optical input versus 750 MHz gain Gain Selection Optical input versus 870 MHz gain 10 illustrates the gain option selection chart for 870 MHz Relative level dB versus 750 MHz slope 77 channels Tilt Selection Relative level dB versus 870 MHz slope 94 channels SG2 870 MHz Slope Chart Analog Channels, 220 MHz Digital Relative level dB versus 870 MHz slope 110 channels SG2 870 MHz Slope Chart Analog Channels, 120 MHz Digital N c h S e t u p G u r e 3 2 0 0 0 R F c h a s s i s W e r i n g t h e N o d e Fuse Functi o n Rati ng Ype W e r S u p p l y S e t t i n g s Illustrates the location of the LO-HIjumper Single Power Supply or Commonly Po wered Redundant Supplies I c k C h e c k s F u n c t i o n a l T e s t i n g N u a l G a i n C o n t r o l Analog Retu rn Path R w a r d P a t h P a d d i n g B l e 3 2 0 0 0 p a d c h a r t s t a n d a r d g a i n B l e 3 2 0 0 0 p a d c h a r t h i g h g a i n G u r e 3 N k P e r f o r m a n c e G u r e 3 1 N c h S e t u p Install i n g t h e D S S G 2 D R R B B o a r d O p t i o n G u r e 3 1 S G 2 D R R B b o a r d Install e d G u r e 3 1 C a t i o n o f J X P s o n E p a c k Digital Transmitter Install i n g t h e S t a t u s M o n i t o r O p t i o n 2 0 0 0 a c t i v a t i o n W o r k s h e e t DC powering Splicing Fiber Service cable connection and compression fitting Installation Mounting bracket-front view Strand Wire Mounting Mounting bracket-rear and side views Center conductor length Coaxial CablesFiber Cables Housing lid and fiber spool tray Fiber spool tray Installation Single Receiver Mode Forward Path RF Configuration Broadband/Narrowcast Mode Redundant Receiver ModeRedundant receiver Broadband/narrowcast Override AB Override Functionality Status monitor/MCB operation Status Monitor/Manual Control Operation Split return Analog Return Path RF ConfigurationRedundant return RF chassis and location of the SG2-RPM/C or SG2-RPM/S board DS-SG2-DRT/A redundant return Digital Return Path RF Configuration DS-SG2-DRT-2X/A redundant return DS-SG2-DRT-2X/A split return Removing SG 2000 Optical Modules Installing SG 2000 Optical ModulesSG 2000 Optical Modules SG2 LR Optical Receiver Cleaning the Optical Connector Feature Description 0.3 Test-point voltage versus optical power Wavelength selection jumper Wavelength Selection Jumper SG2 Ifpt Optical Transmitter FeatureDescriptionSG2-IFPT features SG2 FPT Optical Transmitter Transmitter enableSG2-FPT features SG2 Dfbt Optical Transmitter SG2-DFBT features Single red LED that lights if the hybrid current is outside SG2 DFBT/3 Optical Transmitter SG2-DFBT/3 features SG2 Eifpt Optical Transmitter SG2-EIFPT features DS-SG2-DRT/A DS SG2 DRT/A Digital Return Transmitter DS-SG2-DRT/A features Feature DS-SG2-DRT-2X/A DS SG2 DRT 2X/A Digital Return Transmitter DS-SG2-DRT-2X/A features DS-SG2-DRT-2X/A installed in SG DS-SG2-DRT-2X/A cable connector DS-SG2-DRT-2X/A second RF input cable connection SG2-PS Power SupplySG2-PS power supply Parameter Description Status Monitoring Description Function Manual Control Board DB test point Alarm test pointPotentiometers ICS1 Through ICS4 Off Ingress ControlState Description Table A-1 SG 2000 optical characteristics Parameter SpecificationTable A-2 Station RF characteristics Appendix a ParameterSpeci fic ation Parameter Table A-5 SG2-IFPT RF specificationsTable A-6 SG2-FPT RF specifications Table A-8 SG2-DFBT/3 RF specifications Table A-7 SG2-DFBT RF specifications Table A-10 SG2-DRT/A RF specifications Table A-9 SG2-EIFPT RF specifications Table A-11 SG2-DRT-2X/A RF specifications Minimum Optical Model Output Power DBm Option Watts ac Amps Power @90V @60V @52V @44V Table A-14 SG2-75 performance, with 77 channels Channels Link Launch SystemTable A-15 SG2-87 performance, with 94 channels Table A-16 SG2-87 performance, with 110 channels Torque Fastener Screw Size Wrench Size In-lbs Ft-lbs DBm DBcDBmV MHz Snap connector Return for service authorizationNational Television Standards Committee Optical modulation index Mgbi