Coaxial Cables, Fiber Cables | Motorola SG 2000 specification

I n s t a l l a t i o n

4 - 5

Figure 4-4 illustrates the dimensions of the center conductor:

Figure 4-4

Center conductor length

1.65"Max. 1.50" Min.

There are no surge protectors over the center seizure screws and none should be installed. Adding surge protectors degrades the return loss of the housing port.

Coaxial Cables

To install coaxial cables in the base:

1Loosen, but do not remove, the three bolts on top of the housing and the bolt on each side of the housing. Rotate these bolts away from the cover.

2Swing the housing lid away from the lower housing base.

3Remove the protective port cap(s) in the base and verify that the seizure screw within either the trunk or feeder port is loosened to accept the center pin of the cable connector.

4Secure the cable end in the cable connector as described in the instruction sheet for the connector.

5Insert the center conductor fully until it enters the seizure mechanism. Tighten the terminal screw onto the cable connector and torque to 12 in-lbs (1 ft-lb).

6Repeat steps 3 through 5 for all other cable connections required.

7Protect all cable connections with heat-shrink tape or tubing.

8Lash the cables to the strand where they approach it and secure the cable lashing wire to the strand with commercial clamps.

9Verify that port plugs on any unused ports are firmly seated and torqued to 5 ft-lbs.

Fiber Cables

To install fiber cables in the lid:

1Remove the protective port plug from the side of the housing lid and carefully pass the connector ends of the fiber service cable through this port. It is necessary to insert one connector at a time. Be careful not to bend the fiber any more than is necessary.

2Thread the compression fitting into the port. The compression nut and rubber grommet must be sufficiently loose to enable the fitting to be turned without turning the fiber cable at the same time. Torque the main body of the fitting to 60 to 72 in-lbs (5 to 6 ft-lbs).

SG 2000 Installation and O peration Manual

Image 62

Motorola SG 2000 operation manual Coaxial Cables, Fiber Cables, Center conductor length

Contents

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