DBc, DBmV, MHz | Motorola SG 2000 specs

Abbreviations and Acronyms

The abbreviations and acronyms list contains the full spelling of the short forms used in this manual.

Aampere

ac	alternating current
A/D	analog-to-digital
ADU	automatic drive unit
AGC	automatic gain control
APC	angled physical contact
BW	bandwidth
CATV	Community Antenna Television
c/n	carrier-to-noise ratio
CSO	composite second order
CTB	composite triple beat
CU	control unit
dB	decibel
dBc	decibels relative to the carrier
dBm	decibels relative to 1 milliwatt
dBmV	decibels relative to 1 millivolt
dc	direct current
DFB	distributed feedback
DIP	dual in-line package
FC	ferrule connector
FM	frequency modulation
FTEC	fast trigger electronic crowbar
GBPS	Gigabytes per second
IC	integrated circuit
I/O	input/output
ICS	ingress control switch
km	kilometer
MCB	manual control board
MHz	megahertz
∝ W	microwatt
mA	milliamp
mW	milliwatt

SG 2000 Installation and O peration Manual

Image 103

Motorola SG 2000 operation manual DBc, DBmV, MHz

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 If You Need Help Document ConventionsBold type Calling for Repairs SG 2000 housing dimensions front and side view HousingMounting Holes 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 PathAnalog Return Transmitters Model Description JXP SG2 transmitter block diagram Digital return transmitters Digital Return Path DS-SG2-DRT-2X/A Model Description Function Options and AccessoriesOptions and accessories Level Control SG2-FE SG2-SBSG2-PS2 SG2 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 Fiber Cables Coaxial CablesCenter conductor length Housing lid and fiber spool tray Fiber spool tray Installation Single Receiver Mode Forward Path RF Configuration Broadband/narrowcast Redundant Receiver ModeBroadband/Narrowcast Mode Redundant receiver Override AB Override Functionality Status monitor/MCB operation Status Monitor/Manual Control Operation Redundant return Analog Return Path RF ConfigurationSplit 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 SG 2000 Optical Modules Installing SG 2000 Optical ModulesRemoving SG 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 features FeatureDescriptionSG2 Ifpt Optical Transmitter SG2-FPT features Transmitter enableSG2 FPT Optical Transmitter 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 SG2-PS power supply SG2-PS Power SupplyDS-SG2-DRT-2X/A second RF input cable connection Parameter Description Status Monitoring Description Function Manual Control Board Through ICS4 Alarm test pointDB test point Potentiometers ICS1 State Description Ingress ControlOff Appendix a Parameter SpecificationTable A-1 SG 2000 optical characteristics Table A-2 Station RF characteristics ParameterSpeci fic ation Table A-6 SG2-FPT RF specifications Table A-5 SG2-IFPT RF specificationsParameter 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-16 SG2-87 performance, with 110 channels Channels Link Launch SystemTable A-14 SG2-75 performance, with 77 channels Table A-15 SG2-87 performance, with 94 channels Torque Fastener Screw Size Wrench Size In-lbs Ft-lbs MHz DBcDBm DBmV Optical modulation index Return for service authorizationSnap connector National Television Standards Committee Mgbi