Motorola SG 2000 operation manual FeatureDescription, DS-SG2-DRT-2X/A features

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O p e r a t i o n

5 - 2 3

Table 5-9 provides information on the user-related features of the DS-SG2-DRT-2X/A:

Table 5-9

DS-SG2-DRT-2X/A features

FeatureDescription

Test point A and B

Input A and B

Increment attenuator setting

Decrement attenuator setting

Change increment/ decrement direction

Restore factory default setting

Status

Alarms

No alarm

Over temperature (> + 85°C) Low + 24 Vdc (< + 18 Vdc) Low + 5 Vdc (< + 4.5 Vdc) Low + 2.5 Vdc (< + 2.2 Vdc)

Laser bias/optical power out of spec.

RF input B

These test points enable monitoring of the RF level at the input to the A/D. It measures − 20 dB from the A/D input level.

The transmitter has a digitally controlled attenuator that adjusts for varying input levels. These push-buttons are input level-control adjustments that provide + 2 to − 13 dB of adjustment from an input level of 15 dBmV. No action is taken if both buttons are pressed.

Short press (0.1 to 1.5 seconds). The status LED indication is green with a short OFF blink (0.25 sec.) when the button is released. A short red blink occurs if the increment attempts to go past the maximum.

Short press (0.1 to 1.5 seconds). The status LED indication is green with a short yellow blink (0.25 sec.) when the button is released. A short red blink occurs if the decrement attempts to go past the minimum.

Medium press (1.5 to 5.0 seconds). The status LED is OFF after

1.5seconds when in the increment direction, and yellow when in the decrement direction. The LED is restored to its green or alarm state when the button is released. No increment or decrement occurs.

Long press (5.0 seconds or longer). The status LED flashes green and yellow rapidly until the button is released. After five seconds of flashing, the factory defaults are restored.

This tri-color LED is green if all parameters are within specification. A series of red flashes indicate an alarm condition. The number of red flashes indicate the parameter that is outside the specification.

Status LED indication:

Steady green

Long red, one red flash (repeating) Long red, two red flashes (repeating) Long red, three red flashes (repeating) Long red, five red flashes (repeating) Long red, six red flashes (repeating)

This input is the second RF return signal that is obtained from the adjacent transmitter connector through a provided cable. The cable is illustrated in Figure 5-27.

It is recommended that you restore the factory default settings before you set up the node levels. This procedure places the transmitter input level 2 dB below maximum.

SG 2000 Installation and O peration Manual

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Page 86 Page 88
Contents A R L I N E Special Symbols that Might Appear on the Equipment Contents E r a t i o n InstallationTorque Specifications Abbreviations and Acronyms Specification sSG2-LR Tables N t e n t s SG 2000 closed SectionSG 2000 open Features includeRelated Documentation Using this ManualDocument Conventions If You Need HelpBold type Calling for Repairs Housing SG 2000 housing dimensions front and side viewMounting Holes Port locations Port LocationsGaskets Housing gasketsSG2-PS2 power supply Power SupplyNetwork Monitoring ConfigurationTo suit system requirements the RF chassis cover. notation Forward Path Signal flow diagramE r v i e w SG2-LR Receiver SG2-LR receiver functional diagramAnalog return transmitters Analog Return PathAnalog Return Transmitters Model DescriptionJXP SG2 transmitter block diagramDigital return transmitters Digital Return PathDS-SG2-DRT-2X/A Model Description Function Options and AccessoriesOptions and accessories Level ControlSG2-FE SG2-SBSG2-PS2 SG2Optical input versus 750 MHz gain Gain SelectionOptical input versus 870 MHz gain 10 illustrates the gain option selection chart for 870 MHzRelative level dB versus 750 MHz slope 77 channels Tilt SelectionRelative level dB versus 870 MHz slope 94 channels SG2 870 MHz Slope Chart Analog Channels, 220 MHz DigitalRelative level dB versus 870 MHz slope 110 channels SG2 870 MHz Slope Chart Analog Channels, 120 MHz DigitalN 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 fittingInstallation Mounting bracket-front view Strand Wire MountingMounting bracket-rear and side views Coaxial Cables Fiber CablesCenter conductor length Housing lid and fiber spool tray Fiber spool tray Installation Single Receiver Mode Forward Path RF ConfigurationBroadband/narrowcast Redundant Receiver ModeBroadband/Narrowcast Mode Redundant receiverOverride AB Override FunctionalityStatus monitor/MCB operation Status Monitor/Manual Control OperationAnalog Return Path RF Configuration Redundant returnSplit 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 ConfigurationDS-SG2-DRT-2X/A redundant return DS-SG2-DRT-2X/A split returnInstalling SG 2000 Optical Modules SG 2000 Optical ModulesRemoving SG 2000 Optical Modules SG2 LR Optical Receiver Cleaning the Optical ConnectorFeature Description 0.3 Test-point voltage versus optical powerWavelength selection jumper Wavelength Selection JumperFeatureDescription SG2-IFPT featuresSG2 Ifpt Optical Transmitter Transmitter enable SG2-FPT featuresSG2 FPT Optical Transmitter SG2 Dfbt Optical Transmitter SG2-DFBT featuresSingle red LED that lights if the hybrid current is outside SG2 DFBT/3 Optical Transmitter SG2-DFBT/3 featuresSG2 Eifpt Optical Transmitter SG2-EIFPT featuresDS-SG2-DRT/A DS SG2 DRT/A Digital Return TransmitterDS-SG2-DRT/A features FeatureDS-SG2-DRT-2X/A DS SG2 DRT 2X/A Digital Return TransmitterDS-SG2-DRT-2X/A features DS-SG2-DRT-2X/A installed in SG DS-SG2-DRT-2X/A cable connectorSG2-PS Power Supply SG2-PS power supplyDS-SG2-DRT-2X/A second RF input cable connection Parameter Description Status MonitoringDescription Function Manual Control BoardThrough ICS4 Alarm test pointDB test point Potentiometers ICS1Ingress Control State DescriptionOff Appendix a Parameter SpecificationTable A-1 SG 2000 optical characteristics Table A-2 Station RF characteristicsParameterSpeci fic ation Table A-5 SG2-IFPT RF specifications Table A-6 SG2-FPT RF specificationsParameter Table A-8 SG2-DFBT/3 RF specifications Table A-7 SG2-DFBT RF specificationsTable A-10 SG2-DRT/A RF specifications Table A-9 SG2-EIFPT RF specificationsTable A-11 SG2-DRT-2X/A RF specifications Minimum Optical Model Output Power DBmOption 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 channelsTorque Fastener Screw Size Wrench Size In-lbs Ft-lbs MHz DBcDBm DBmVOptical modulation index Return for service authorizationSnap connector National Television Standards CommitteeMgbi
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