Manuals / Motorola / Computer Equipment / Network Card

Motorola SG 2000 SG2 FPT Optical Transmitter, Transmitter enable, SG2-FPT features

Models: SG 2000

1 105

Download 105 pages 11.1 Kb

Page 79

O p e r a t i o n

5 - 1 5

Feature	Description
Transmitter enable	A green LED that provides visual indication of the transmitter’s
	enable status.
Fault indicator	A single red LED that lights when the hybrid current is outside the
	normal operating range, the laser output power is below normal
	limits, or the laser current is above normal limits. Because the laser
	output requires a short period of time to stabilize, it is acceptable
	for the fault indicator to illuminate during the stabilization interval
	(approximately 2 seconds). Note that the module must be enabled
	for the fault indicator to function.

SG2 - FPT Optical Transmitter

The SG2-FPT is a non-isolated Fabry-Perot return-path optical transmitter designed for use in the SG 2000 node platform. It has a nominal optical output power of 0.4 mW and can be used in conjunction with an AM-RPR, AM-OMNI-RPR/2, or other similar return path optical receiver. Figure 5-17 illustrates the SG2-FPT:

Figure 5-17

SG2-FPT

SG2000
Transmitter
LASER	O	F	SG2-FPT
LASER	N	A
CURRENT		U	ASSEM BLED
(1 V/A)		L	IN MEXICO
		T

Table 5-4 provides information on the user-related features of the SG2-FPT:

Table 5-4

SG2-FPT features

FeatureDescription

Optical power test point This test point enables monitoring of the optical output level of the module. The nominal scale factor is 1.0 V/mW. The optical power test point voltage is between 0.375 V and 0.425 V (optical power of 0.375 mW through 0.425 mW) when the module is enabled under normal operating conditions. Note that the optical power test point does not track changes in optical power due to the laser tracking error.

Laser current test point This test point enables monitoring of the current drawn by the laser diode. The nominal scale factor is 1.0 V/A. The laser current test point voltage is between 4 mV through 90 mV (laser current of

4 mA through 90 mA) when the module is enabled under normal operating conditions. The laser current is expected to vary widely with changes in temperature, but should always remain between the limits.

SG 2000 Installation and O peration Manual

Image 79

Motorola SG 2000 operation manual SG2 FPT Optical Transmitter, Transmitter enable, SG2-FPT features

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