Installation and Operation Manual SG4000 1 GHz Modular Optical Node (Revision 3)
Caution These servicing instructions are for use by qualified personnel only. To reduce the risk of electrical shock, do not perform any servicing other than that contained in the Installation and Troubleshooting Instructions unless you are qualified to do so. Refer all servicing to qualified service personnel.
FDA Compliance This product meets the requirements of the Code of Federal Regulations, Title 21, Chapter I, Subchapter J, Sections 1010.2, 1010.3, 1040.10, and 1040.11 CLASS 1 LASER PRODUCT Declaration of Conformity We Motorola, Inc. 101 Tournament Drive Horsham, PA 19044, U.S.A.
Contents Section 1 Introduction Using this Manual ............................................................................................................................................................................ 1-3 Related Documentation................................................................................................................................................................... 1-3 Document Conventions...........................................................................
ii Contents Section 3 Bench Setup and Operation Forward Path Configuration ............................................................................................................................................................3-3 Forward Split ............................................................................................................................................................................3-5 Forward Redundant Split ............................................................
Contents iii Section 5 Installation Splicing Fiber ................................................................................................................................................................................... 5-1 Fiber Cables...................................................................................................................................................................................... 5-2 Standard Strand Wire Mounting .............................................
iv Contents Figure 3-7 Forward redundant-split, two-receiver configuration................................................................................................3-8 Figure 3-8 Forward redundant-split board....................................................................................................................................3-9 Figure 3-9 Forward redundant-split board – signal flow .........................................................................................................
Contents v Figure 4-6 SG4-RF module block diagram ................................................................................................................................. 4-10 Figure 4-7 SG4-RF module........................................................................................................................................................... 4-11 Figure 4-8 FSB board........................................................................................................................
vi Contents Table A-6 SG4-PS power requirements........................................................................................................................................ A-3 Table A-7 SG4000 performance, with 77 channels ..................................................................................................................... A-3 Table A-8 SG4-IFPT RF specifications ....................................................................................................................
Section 1 Introduction Motorola’s SG4000 modular optical node is now available with 1 GHz forward actives. Revision 3 of the Installation and Operation Manual includes specific information regarding the 1 GHz models, as well as expanded details on the overall node features and functions. Motorola’s STARLINE® SG4000 modular optical node is the successor to the popular fouroutput SG2440 platform.
1-2 Introduction Figure 1-2 illustrates an open SG4000 telecommunications optical node.
Introduction 1-3 Using this Manual The following sections provide information and instructions to install, configure, and operate the SG4000: Section 1 Introduction provides a brief description of the product, identifies the information contained in this manual, and gives the help line telephone number and repair return information. Section 2 Overview provides a list of the options and accessories, housing, and configuration information for the SG4000.
1-4 Introduction Document Conventions Before you begin to use the SG4000, familiarize yourself with the stylistic conventions used in this manual: Bold type Indicates text that you must type exactly as it appears or indicates a default value. SMALL CAPS Denotes silk screening on the equipment, typically representing front and rear-panel controls, I/O connections, and indicators (LEDs).
Introduction 1-5 Calling for Repairs If repair is necessary, call the Motorola Repair Facility at 1-800-227-0450 for a Return for Service Authorization (RSA) number before sending the unit. The RSA number must be prominently displayed on all equipment cartons. The Repair Facility is open from 8:00 AM to 5:00 PM Central Time, Monday through Friday. When calling from outside the United States, use the appropriate international access code and then call 956-541-0600 to contact the Repair Facility.
Section 2 Overview This section provides an overview of the multiple receiver and transmitter combinations available to satisfy a variety of architectures. The forward path uses Motorola Proprietary Enhanced Gallium Arsenide (E-GaAs) technology to deliver broadcast video and data over the entire 47 MHz-1 GHz passband.
2-2 Overview Housing The SG4000 optical node is furnished in an aluminum housing that protects the electronics from weather and dissipates internally generated heat. Figure 2-1 illustrates the SG4000 housing and provides its dimensions. Figure 2-1 SG4000 housing dimensions – front and side view 4 16.84 inches 6 5 11.03 inches 23.63 inches 10.59 inches Coaxial cable connections to the housing are made using conventional 5/8 inch × 24 threads per inch stinger-type connectors.
Overview 2-3 Port Locations The six housing ports provide connections for either RF coaxial cables or an external 60 or 90 VAC power supply. The node is shipped with RF modules in the four corner locations, each with an externally accessible –20 dB forward RF test point. Ports 2 and 5 are available for connection to an external power supply. Two ports (one on each end of the housing lid) provide fiber entry. All ports are protected by factory-inserted threaded plugs or plastic cap plugs.
2-4 Overview Gaskets The housing lid is equipped with an elastomer core, woven-wire RF gasket for EMI shielding and ground continuity. The housing base is equipped with a silicone-rubber gasket to provide an environmental seal between the housing base and lid. Both gaskets must be in place and in good condition to ensure proper operation and protection of the station. The weather gasket should be lightly coated with silicone grease each time the node is opened. Figure 2-4 illustrates the housing gaskets.
Overview 2-5 Network Monitoring The optional LIFELINE Status Monitoring System enables you to monitor the SG4000 from a headend or a remote location. The transponder (LL-SG4) consists of a plug-in module mounted in the lid. The entire LIFELINE system includes: LL-CU control units Connected to the system at the headend and interrogate each SG4000 field transponder with FM outbound and inbound transmissions.
2-6 Overview Model Description Function LME-100-* Forward equalizers Used to increase the output tilt of the receiver in a 1 GHz system. They are available in 1 dB increments from 3 dB through 10 dB. ICS II Ingress switch This switch enables the operator to troubleshoot without shutting down the return path. It requires the use of either the LL-SG4/* or the SG4-EPIM. SG4-R/* Lightwave receiver This receiver converts the received optical signal to broadband RF.
Overview 2-7 Figure 2-5 provides a diagram of the signal flow path through the SG4000 lid. Figure 2-5 Signal flow diagram – SG4000 lid Status Monitor (Optional) Optical Input (-3 dBm to +2 dBm) TP (-20 dB) RCVR Slot 1 PAD EQ 0.0 dB -1.0 dB +24.0 dB Optical Input (-3 dBm to +2 dBm) -1.0 dB TP (-20 dB) RCVR Slot 2 PAD EQ 0.0 dB -1.0 dB +24.0 dB -1.0 dB TP (-20 dB) Tx Slot 3 PAD +30.0 dB -0.5 dB 6.0 dB TP (-20 dB) Tx Slot 4 PAD +30.0 dB -0.5 dB 6.
2-8 Overview Figure 2-6 provides a diagram of the signal flow-path through the SG4000 base. Figure 2-6 Signal flow diagram – SG4000 base Port Entry -1.0 dB -0.25 dB RF Module 1 -1.0 dB PAD +23 dB -1.0 dB H RESP LPF ICS PAD -1.5 dB -1.0 dB 0.0 dB L -0.25 dB Port 1 TP (-20 dB) TP -20 Ext. -1.0 dB To Pwr Dist Brd -0.6 dB 20A -0.7 dB Port 2 TP (-20 dB) To Pwr Dist Brd RF Module 3 -1.0 dB PAD +23 dB TP (-20 dB) -1.0 dB H RESP LPF ICS PAD -1.5 dB -1.0 dB 0.0 dB L -0.
Overview 2-9 Configuration The SG4000 is available in standard configurations. The shipped configuration is noted on the bar code label. Figure 2-7 illustrates the configuration notation. Figure 2-7 Configuration notation Key None X Combined A Combined, redundant B Split C D Split, redundant Segmented Digital return transmitters are purchased separately. Fiber service cable is purchased separately. Standard accessories include FTEC, 20A fuses.
2-10 Overview Bandpass Frequency The SG4000 modular optical node is only available in a forward bandpass frequency of 1 GHz. If you are deploying the SG4000 in a system with less than 1 GHz, refer to Figure 2-8 to determine the tilt at the appropriate frequency. For example, the standard node slope of 14.5 dB at 1 GHz equates to 12.5 dB at 870 MHz. Figure 2-8 illustrates the tilt selection chart for 1 GHz bandwidth.
Overview 2-11 Bandpass Frequency Splits The SG4000 is configured with sufficient frequency bandsplits to accommodate global requirements.
2-12 Overview Table 2-2 illustrates the typical padding required for optimum performance with a 79 channel load. Table 2-2 SG4000 pad chart-standard gain Input dBm/mW 40 41 42 43 44 45 46 47 48 49 2.0/1.6 Receiver JXPs RF mod JXPs 10 10 10 9 10 8 10 7 10 6 10 5 10 4 10 3 10 2 10 1 1.5/1.4 Receiver JXPs RF mod JXPs 10 9 10 8 10 7 10 6 10 5 10 4 10 3 10 2 10 1 10 0 1.0/1.3 Receiver JXPs RF mod JXPs 10 8 10 7 10 6 10 5 10 4 10 3 10 2 10 1 10 0 9 0 0.5/1.
Overview 2-13 board. A flexible power-distribution design enables you to power the node from any of the six RF/AC ports. Using fuses and shunts, you can configure the node to distribute power to the remaining active ports. You can also power the node locally through either end while a second cable-plant power supply loops through the other end of the node. You can power the SG4000 from either 60 VAC or 90 VAC system power supplies. There is no voltage selection jumper to relocate.
2-14 Overview You can distinguish the SG4000 1 GHz port entry assemblies by the addition of a terminal clamp block on the bottom of the port entry board. The terminal clamp secures the AC wiring that connects each of the port entry assemblies. The 870 MHz port entry assemblies have the AC wiring soldered directly to the board. The terminal clamp design on the 1 GHz model enables field personnel to replace the port entry board if necessary.
Section 3 Bench Setup and Operation Before you install the SG4000, it must be set up to meet the power and configuration requirements for each particular node location. This section presents the set up procedures that are recommended to ensure proper functioning of all components and simplify field installation. This section also provides information concerning the operation of the various options and applications required by your system.
3-2 Bench Setup and Operation Figure 3-2 illustrates the SG4000 optical node indicating the location of major components in the lid.
Bench Setup and Operation 3-3 Forward Path Configuration The following subsections present information to help you configure the forward path of the SG4000. To configure the forward path, you must install configuration-specific boards in forward configuration board locations 1 and/or 4, as illustrated in Figure 3-3. Figure 3-3 illustrates the SG4000 and identifies the location of all major forward-path components.
3-4 Bench Setup and Operation You can configure the SG4000 forward path with up to four SG4-R receivers and up to two forward configuration plug-in boards. Each board has a specific function and receiver combination associated with it and is clearly labeled. The forward configuration board, in location 1, services the SG4-R receivers in optics slots 1 and 2, as illustrated in Figure 3-2. The forward configuration board in location 4 services the SG4-R receivers in lid optics slots 7 and 8.
Bench Setup and Operation 3-5 The following subsections describe the forward-path configuration options. Forward Split In the standard forward split configuration, a single SG4-R receiver delivers forward broadcast content to a single, forward split configuration board. The forward split board distributes signals to 2, 3, or 4 RF outputs. The single SG4-R must be located in lid optics slot 1.
3-6 Bench Setup and Operation Figure 3-5 illustrates the forward split board. Jumpers J6 and J7 are shown in the normal default position that enables signal flow to each output connector. When configuring for three outputs, move J6 to the left position, thereby terminating output connector J5 (Port 2). When configuring for two outputs, move J7 to the upper position, thereby terminating output connector J8 (Port 3).
Bench Setup and Operation 3-7 7 Ensure that the power interconnect cable (PIC) is properly connected from the lid router board to the center power-distribution board in the node housing base. 8 Route the fiber service cable into the node and fiber tray. 9 Measure the optical input power on the forward pigtail, leaving enough length to connect it to the receiver bulkhead connector. 10 Apply power to the node (See Powering the Node in this section).
3-8 Bench Setup and Operation Forward Redundant Split In this configuration, the output of two SG4-R receivers deliver forward broadcast content to a single forward redundant-split configuration board. Operation in the redundant mode requires that you install two SG4-R/* receivers: the primary in lid optics slot 1, the secondary in lid optics slot 2. Each SG4-R receives an optical input, but only one receiver has an active RF output based on the Embedded Plug-In Module (EPIM) jumper settings.
Bench Setup and Operation 3-9 Figure 3-8 illustrates the forward redundant-split board. Jumpers J7 and J8 are shown in the normal default position that enables signal flow to each output connector. When configuring for three outputs, move J7 to the left position, thereby terminating output connector J5 (OUT 4). When configuring for two outputs, move J8 to the right position, thereby terminating output connector J6 (OUT 3).
3-10 Bench Setup and Operation The EPIM board contains jumpers J4 through J9 (illustrated in Figure 3-10) that determine the primary and secondary receiver. The EPIM then activates receiver one or two based on the jumper position. Refer to Section 4, “Modules,” Embedded Plug-in Module for more information regarding its use. Figure 3-10 illustrates the suitcase jumpers located on the EPIM.
Bench Setup and Operation 3-11 13 Verify that the green LED (ON), located on the top panel of the SG4-R/* in lid optics slot 1, is illuminated to confirm enable status. 14 Using a voltmeter, test the optical input power to the receivers. Figure 4-2 illustrates the optical power test point on the top panel of the SG4-R/* receiver. The scaled voltage at this test point is 1.0 V/mW. 15 Measure the RF output level at the primary receiver –20 dB test point using an RF meter. For 0 dBm (1.
3-12 Bench Setup and Operation Forward Segmented 2X In the forward segmented 2X configuration, the output of two SG4-R/* receivers each drive one pair of SG4000 RF outputs. This configuration requires the installation of optical receivers in lid optics slots 1 and 7 (Figure 3-11). Receiver 1 is connected to the forward 2X segmented configuration board in location 1. Receiver 7 is connected to the forward 2X segmented configuration board in location 4.
Bench Setup and Operation 3-13 Figure 3-12 illustrates the forward segmented 2X board. Jumper J4 is shown in the normal position that enables signal flow to each output connector. When configuring for a single output, move J4 to the lower position, thereby terminating output connector J5 (OUT 1). Figure 3-12 Forward segmented 2X board OUT 2 OUT 1 N O R M T E R M J4 RX Figure 3-13 illustrates the signal flow through the forward segmented 2X board. Loss is measured at 870 MHz.
3-14 Bench Setup and Operation 8 Measure the optical input power on the forward pigtails, leaving enough length to connect them to the receiver bulkhead connectors. 9 Apply power to the node (see Powering the Node in this section). Allow five to ten seconds for the system self diagnosis to complete. 10 Connect the service cables to each receiver bulkhead connector. 11 Verify that the green LED (on), located on the top panel of the SG4-R/*, is illuminated to confirm enable status.
Bench Setup and Operation 3-15 Forward Redundant Segmented 2X In the forward redundant segmented 2X configuration, the output of two pair of SG4-R/* receivers each drives one pair of SG4000 RF outputs. Operation in this configuration requires the installation of optical receivers in lid optics slots 1, 2, 7, and 8 (Figure 3-14). Receivers in optics slots 1 and 2 are connected to the forward segmented 2X board in configuration location 1.
3-16 Bench Setup and Operation Figure 3-15 illustrates the forward redundant segmented 2X board. Jumper J5 is shown in the normal default position that enables signal flow to each output connector. When configuring for a single output, move J5 to the left position, thereby terminating output connector J6 (OUT 2). Figure 3-15 Forward redundant segmented 2X board OUT 1 OUT 2 J5 TERM SEC RX NORM PRI RX Figure 3-16 illustrates the forward redundant segmented 2X signal flow. Loss is measured at 870 MHz.
Bench Setup and Operation 8 3-17 Position jumper J5 as required for the number of active outputs you are using. In a typical installation, the RF modules in Ports 1 and 3 are connected to the forward redundant segmented 2X board in configuration location 1. The RF modules in Ports 4 and 6 are connected to the forward redundant segmented 2X board in configuration location 4. 9 Ensure that the PIC cable is properly connected to the lid router board and center power distribution board in the node base.
3-18 Bench Setup and Operation 26 Move the jumper on the EPIM board from the SW2 auto to the SW2 A position, thereby disabling receiver 8. See Section 4, “Modules,” Embedded Plug-in Module for detailed information on the switch and jumper settings. 27 Route the fiber service cable into the node and fiber tray. 28 Measure the optical input power on the primary and secondary forward pigtails, leaving enough length to connect them to the receiver bulkhead connectors.
Bench Setup and Operation 3-19 Forward Segmented 4X In the forward segmented 4X configuration, four SG4-R/* receivers deliver signals to four SG4000 RF modules. Operation in this configuration requires the installation of optical receivers in lid slots 1, 2, 7, and 8 (Figure 3-17). The receivers in lid optics slots 1 and 2 are connected to the forward segmented 4X board in configuration location 1.
3-20 Bench Setup and Operation Figure 3-18 illustrates the forward segmented 4X board. Figure 3-18 Forward segmented 4X board Figure 3-19 illustrates the signal flow through the forward segmented 4X board. Loss is measured at 870 MHz. Figure 3-19 Forward segmented 4X – signal flow Rx Out Loss = 2.7 dB Rx Out To set up the forward segmented 4X option: 1 Confirm that an SG4-R/* receiver is installed in lid optics slots 1, 2, 7, and 8.
Bench Setup and Operation 3-21 10 Verify that the green LED (ON), located on the top panel of each SG4-R/*, is illuminated to confirm enable status. 11 Using a voltmeter, test the optical input power to the receivers. Figure 4-2 illustrates the optical power test point on the top panel of the SG4-R/* receiver. The scaled voltage at this test point is 1.0 V/mW. 12 Measure the RF output level at the receiver’s −20 dB RF test point using an RF meter. For 0 dBm (1.
3-22 Bench Setup and Operation Return Path Configuration The following subsections present information to help you configure the SG4000 return path. To configure the return path, you must install configuration-specific boards in return configuration board locations 2 and 3, as illustrated in Figure 3-20. Figure 3-20 illustrates the SG4000 and identifies the location of all major return-path components.
Bench Setup and Operation 3-23 You can configure the SG4000 return path using a variety of analog or digital transmitters and up to two configuration plug-in boards in the return configuration board locations. Each board has a specific function and transmitter combination associated with it and is clearly labeled. The return configuration board, in location 2, services the analog transmitters in lid optics slots 3 and 4.
3-24 Bench Setup and Operation The following subsections describe the return path configurations. Combined Return In the combined return configuration, two, three, or four RF returns are combined onto a single combined redundant return board located in return configuration board location 2, illustrated in Figure 3-21. This board is also used in the combined redundant return configuration in the next subsection. Figure 3-21 illustrates the combined return configuration.
Bench Setup and Operation 3-25 Figure 3-22 illustrates the combined return board required for the combined return configuration. Jumpers J3, J6, and J9 are shown in the normal default position. Jumper J9 enables/disables the signal flow to output connector J10 (TX2). Jumper J9 is shown in the upper position to terminate the output connector path to TX2. The RF output to TX1 is connected to a single return transmitter in lid optics slot 4.
3-26 Bench Setup and Operation Jumper J3 enables/disables IN4 and jumper J6 enables/disables IN2. 7 Ensure that the PIC cable is properly connected to the lid and center power distribution board in the housing base. 8 Route and connect the fiber service cable. 9 Apply power to the node (see Powering the Node in this section). Allow five to ten seconds for the system self-diagnosis to complete.
Bench Setup and Operation 3-27 Combined Redundant Return In the combined redundant return configuration, two, three, or four RF returns are combined onto a combined redundant return board. The combined redundant return board directs the signals to two return transmitters located in lid optics slots 3 and 4. This board is located in configuration location 2, as shown in Figure 3-24. Figure 3-24 illustrates the combined redundant return configuration.
3-28 Bench Setup and Operation Figure 3-25 illustrates the combined redundant return plug-in board required for combined redundant return configuration. Jumpers J3, J6, and J9 are shown in the normal default position. Jumper J9 enables/disables the signal flow to output connector J10 (TX2). Jumper J9 is shown in the lower position to enable the output connector path to TX2. The RF output to TX1 is connected to a return transmitter in lid optics slot 4.
Bench Setup and Operation 5 Connect the appropriate return RF cables from the SG4-RF modules to the combined redundant return board. 6 Position jumpers J3 and J6 as required by the number of active inputs you are using. 3-29 Jumper J3 enables/disables IN4 and jumper J6 enables/disables IN2. 7 Ensure that the PIC cable is properly connected to the lid router board and center power distribution board in the housing base. 8 Route and connect the fiber service cables.
3-30 Bench Setup and Operation Split Return In the split return configuration, each pair of RF returns is applied to a separate 2X redundant return configuration board. The 2X redundant return configuration board, in return configuration board location 2, directs RF to the transmitter in lid optics slot 3. The 2X redundant return configuration board, in return configuration board location 3, directs RF to the transmitter in lid optics slot 6.
Bench Setup and Operation 3-31 Figure 3-28 illustrates the 2X redundant return configuration board. Jumpers J5 and J6 are shown in the normal default position. Jumper J6 enables/disables signal flow to output connector J8 (TX2). Jumper J5 terminates input connector J3 (IN2) when only a single RF input is used.
3-32 Bench Setup and Operation In a typical installation, the RF modules in Ports 1 and 3 are connected to the 2X redundant return board in return configuration location 3. The RF modules in Ports 4 and 6 are connected to the 2X redundant return configuration board in configuration location 2. 7 Ensure that the PIC cable is properly connected to the lid and center power distribution board in the housing base. 8 Route and connect the fiber service cable.
Bench Setup and Operation 3-33 Split Redundant Return In the split redundant return configuration, each pair of RF returns is applied to a separate 2X redundant return configuration board. The 2X redundant return board, in return configuration location 2 (Figure 3-30), directs RF to two transmitters in lid optics slots 3 and 4. The 2X redundant return board, in return configuration location 3, directs RF to two transmitters located in lid optics slots 5 and 6.
3-34 Bench Setup and Operation Figure 3-31 illustrates the plug-in board required for the 2X redundant return option. Jumpers J5 and J6 are shown in the correct position. Jumper J6 enables signal flow to output connector J8 (TX2) when in the left-most position. If you are using only a single RF input, jumper J5 terminates input connector J3 (IN2) when in the right-most position.
Bench Setup and Operation 3-35 In a typical installation, the RF module in Ports 1 and 3 are connected at the 2X redundant return board in configuration location 3. The RF modules in Ports 4 and 6 are connected to the 2X redundant return board in configuration location 2. 7 Ensure that the PIC cable is properly connected to the lid and center power distribution board in the housing base. 8 Route and connect the fiber service cable. 9 Apply power to the node (see Powering the Node in this section).
3-36 Bench Setup and Operation Segmented Return In the segmented return configuration, each RF return is applied to an individual transmitter. Two segmented return boards are required. The segmented return boards contain two independent RF paths. The segmented return board installed in return configuration location 2 directs RF to the transmitters located in lid optics slots 3 and 4.
Bench Setup and Operation 3-37 Figure 3-34 illustrates the segmented return plug-in board. Figure 3-34 Segmented return board IN2 IN1 C4 C7 C1 C9 C12 R2 R9 R3 C2 T1 R10 C8 C3 R11 R4 J5 J6 SM C6 C10 R7 R5 R6 R8 J4 C12 C11 J7 R1 J3 TX2 TX1 Figure 3-35 illustrates the signal flow through the segmented return board. Figure 3-35 Segmented return board – signal flow TX2 Pad IN2 -0.5dB TX1 IN1 Pad Loss = 0.
3-38 Bench Setup and Operation 8 Apply power to the node (see Powering the Node in this section). Allow five to ten seconds for the system self-diagnosis to complete. 9 Verify that the green LED (ON), located on the top panel of each transmitter, is illuminated to confirm enable status. Refer to Section 4, “Modules,” for fault LED functions. 10 Measure the RF power at the test point on the top of each return path transmitter.
Bench Setup and Operation 3-39 Powering the Node You can conveniently power the SG4000 by applying 60 VAC or 90 VAC to any of the six RF/AC ports. Typically, the middle housing ports, 2 and 5, are not used for RF purposes and are the default powering ports. All six ports are rated at 15 amperes maximum, and each port is fused with a blade-type 20-ampere mini-auto fuse. AC is never transferred onto the RF modules; the port entry boards direct the AC to the power distribution board in the housing base.
3-40 Bench Setup and Operation Figure 3-37 illustrates the power distribution board and fuse locations.
Bench Setup and Operation 3-41 Figure 3-38 illustrates the fuse locations in the SG4000 node.
3-42 Bench Setup and Operation CAUTION! Voltages up to 90 VAC are accessible. To avoid shock hazard, confirm that no power is applied to the node before removing cover or replacing fuses. Table 3-3 identifies and describes the SG4 fuses and powering options. Table 3-3 SG4 fuses and powering options Fuse Location Function Rating Type Port 1 Passes AC to/from Port 1 of the housing base. 20 A, 32 VDC Plug-in, fast blow, mini-auto Port 2 Passes AC to/from Port 2 of the housing base.
Bench Setup and Operation 3-43 Power Supply Operation You can power the SG4000 from 60 VAC or 90 VAC system supplies. The SG4000 power supply module is auto-ranging and requires no start-up voltage jumper selection. The power supplies begin to operate when the proper input voltage level of 44 VAC rms is reached; they continue to operate until the input voltage drops below 39 VAC. The line frequency must be 50 Hz or 60 Hz, and the input voltage waveshape must be quasi-squarewave.
3-44 4 Bench Setup and Operation Ensure shunt F1 (30 A): is in place to direct AC to the right side of the node. is removed to disable AC from passing to the right side of the node. If powering the node from Port 2 and you remove F3, F1 can still direct AC from Ports 1 and 3 to the rest of the node.
Section 4 Modules This section identifies and provides detailed information on all modules that you can use with the SG4000. It also discusses their installation, removal, and cleaning of the optical connectors where appropriate. All of the SG4000 optical modules are equipped with SC/APC connectors but may be ordered with SC to E2000 adaptors.
4-2 Modules Removing SG4000 Optical Modules The SG4000 optical modules design enables you to remove them while the node is in service. CAUTION! The module surfaces may be hot. Allow sufficient time for the module to cool before handling. To remove an optical module: 1 Disconnect the service cable from the optical connector assembly on the module. 2 Place dust covers on the service cable connector and on the modules’ optical connector assembly.
Modules 4-3 SG4-R/* Optical Receiver The SG4-R/* is a line of forward-path optical receivers used in the SG4000 node platform. It is designed for use with a Motorola Omnistar GX2® or similar optical transmitter. The SG4-R/* line delivers the high output levels required in the SG4000. The two-stage receiver uses an integrated optical-hybrid photodetector and a push-pull amplifier for improved RF performance over the entire 40 MHz through 1 GHz passband.
4-4 Modules Figure 4-2 illustrates the SG4-R/* receiver with the cover installed (left) and the cover removed (right). Figure 4-2 SG4-R/* cover on, cover off RF TP ENABLE LEDs RF test point ON FAULT FAULT LME Wavelength selection jumper SLOPE 1550 1310 Optical power test point 1V/mW OPTICAL INPUT JXP attenuator 1 GHz OPTICAL RECEIVER Table 4-1 provides additional information on the user-related features of the SG4-R/*.
Modules 4-5 Table 4-2 provides SG4-R* minimum output levels; levels at the receiver test point are -20 dB. Table 4-2 SG4-R/* minimum output levels Optical input level (dBm/mW) TP Volts (1 mW=1 V) Output (dBmV) @ 547.25 MHz 77 channels Comments 3.0/2.0 2.0 52 High level alarm 2.0/1.58 1.58 50 Normal 1.5/1.4 1.4 49 Normal 1.0/1.26 1.26 48 Normal 0.5/1.1 1.1 47 Normal 0.0/1.00 1.00 46 Optimum –0.5/0.9 0.9 45 Normal –1.0/0.8 0.8 44 Normal –1.5/0.71 0.71 43 Normal –2.
4-6 Modules Figure 4-3 illustrates the relationship between test-point voltage (Vdc) and optical power (dBm). Figure 4-3 Test-point voltage versus optical power 5 4 Optical power (dBm) 3 2 1 0 -1 -2 -3 -4 -5 -6 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 Test point DC Voltage (Vdc) 1 Volt = 1 mW optical power 10 Log10 x Voltage (DC) = optical power (dBm) SG4000 Installation and Operation Manual 2.50 2.75 3.
Modules 4-7 SG4-* Analog Optical Return Path Transmitters The analog SG4000 analog optical return transmitters are single wide modules that feature either Fabry-Perot or Distributed Feedback lasers, depending on the level of performance required. The physical form factor of each transmitter is identical and shown in Figure 4-4.
4-8 Modules Table 4-3 provides information on the user-related features of the analog SG4-* transmitter. Table 4-3 SG4-* transmitter features Feature Description Input JXP attenuator JXP style attenuator pad that enables you to make return path gain adjustments to set the proper into the laser. This pad value is factory set to 6 dB in anticipation of 28 dBmV total power at the node housing input. Select the proper pad value required to measure −5 dBmV total power at the RF input test point.
Modules 4-9 SG4-EIFPT Optical Transmitter The SG4-EIFPT is a 1310 nm enhanced, isolated Fabry-Perot return-path optical transmitter with a nominal optical output power of 1.0 mW that you can use with a Motorola OmniStar GX2® RX2000BX2 or similar return path optical receiver. This transmitter is a multimode device that exhibits better dynamic range and is suitable for networks with increased link loss requirements. The OMI is 0.35 ±0.020.
4-10 Modules SG4000 RF Module Each SG4-RF module contains the entire necessary forward and return path circuitry for each individual port within the SG4000 node. All diplex filtering in the node is achieved within the RF module by means of the main diplex filter and a Vertical Return Path Low Pass Filter (V-RPLPF) designed to further reject forward energy from the transmitter input. AC power passing and fuses have been removed from the RF module.
Modules 4-11 Figure 4-7 illustrates an SG4-RF module with the cover installed (left) and cover removed (right). Figure 4-7 SG4-RF module RF MODULE FWD Forward JXP attenuator RTN 1 GHz FWD EQ LPF Return path low pass filter ICS FSB Return test point RTN T.P. -20dB ICS Return JXP attenuator H L Diplex filter FWD T.P. Forward test point -20dB Table 4-5 provides information on the user-related features of the SG4-RF module.
4-12 Modules Feature Description Return Input JXP Attenuator JXP style attenuator pad that enables you to make return path level adjustments. Ingress Control Switch (ICS) Optional, active plug-in device that enables you to attenuate the return path of the individual RF module in 0, -6 dB, and off states. It is controlled through the optional EPIM or transponder module. You can access the ICS by removing the RF module chassis cover.
Modules 4-13 SG4-PS Power Supply The SG4-PS power supply module is auto-ranging and requires no start-up voltage jumper selection. The SG4-PS begins to operate when the proper input voltage level of 44 VAC rms is reached with a line frequency of 50 Hz or 60 Hz. The wave shape of the input voltage must be quasi-squarewave. The SG4-PS features a self-protection attribute that shuts it down for instantaneous line voltages higher than 176 VAC.
4-14 Modules A single SG4-PS power supply provides 2.9 A at +24 V. You can use the test point on the top panel of the SG4-PS to verify the 24 VDC output. A green LED also on the top panel indicates that the power supply is functioning properly. If the green LED is not on, the supply is not producing a 24 V output. You can use the AC test point on the top panel of the SG4-PS to determine if the unit is receiving an AC input.
Modules 4-15 Figure 4-10 illustrates the relationship between AC current draw and DC current output in the SG4-PS. Figure 4-10 SG4-PS current input and output curves SG4000 V-A Curves 5.5 5 AC Current Amps True rms 4.5 4 1, 2, or 3 SG-4 PS @ 44V 3.5 1, 2, or 3 SG-4 PS @ 90V 3 2.5 2 1.5 2.3 5.
4-16 Modules The EPIM contains microprocessor circuitry that collects telemetry data from all modules installed in the SG4000 modular node. When a transponder module is installed, the EPIM serves as the primary interface to the transponder, relaying the data to a remote interface. The EPIM board contains a 3-gang, dual-in-line-package (DIP) switch, six jumper-selectable header switches, indicator LEDs, and a reset switch. Table 4-9 provides descriptions and functions of these user-interface settings.
Modules 4-17 Ingress Control The SG4000 platform incorporates electronic ingress control switching, enabling you to choose one of three options for troubleshooting noise sources. A maximum of four switches (one ingress switch per RF module) can populate the SG4000. Figure 4-7 illustrates the ICS location on the RF module.
4-18 Modules Parameter Transmitter Telemetry Optical Output Power DC current Transmitter Identification Power Supply Telemetry Power Supply Presence DC voltage Power Supply Identification RF Amplifier Module Ingress Control Switch Amplifier Module Identification DC Current Station RF Active Connection Tamper SG4000 Installation and Operation Manual
Section 5 Installation Installation consists of splicing the six- or eight-fiber service cable to the transportation fiber, installing the housing and electronics on the messenger strand, applying power, and placing the unit in service. To avoid excess weight and the possibility of damage during installation, the housing is normally mounted prior to inclusion of the expensive electronic components.
5-2 3 Installation Assemble the splice enclosure following the instructions furnished with the enclosure. CAUTION! It is important that the connections at the headend be duplicated. If they are different from the above recommendations, follow the scheme used for the headend connections. 4 Complete the splicing and installation of the splice enclosure. 5 Suspend the extra cable from the messenger using locally accepted methods.
Installation 5-3 Figure 5-2 illustrates the SG4000 housing lid and fiber management trays. The standard tray is shown to the right and the optional tray to the left. Figure 5-2 Housing lid and fiber management trays Fiber management tray Figure 5-3 illustrates the fiber management tray with the lid removed to show correct fiber spooling.
5-4 Installation 6 Connect each fiber by removing the protective boot from the fiber connector, cleaning the connector with pure isopropyl alcohol (99%) using a lint-free wipe, and drying it with filtered compressed air. 7 After cleaning the fiber, insert it into the appropriate receiver or transmitter module. 8 Position the fiber service cable in the compression fitting to provide some slack in the fibers inside the housing. 9 Tighten the compression nut until it bottoms out.
Installation 5-5 Figure 5-5 illustrates a front and side view of the strand mounting clamps. Figure 5-5 Strand mounting clamps – front and side view Clamp 6 5 4 Clamps To mount the SG4000 to the strand wire: 1 Loosen the 5/16 × 18 strand clamp bolt located on each mounting bracket. 2 Lift the node such that the clamps are level with the strand and slide the node back until the strand engages the strand clamps. Do not tighten the hex-head bolts at this time.
5-6 Installation Figure 5-6 illustrates a front and side view of the optional strand bracket mounting procedure on the SG4000. Figure 5-6 Optional SG2-style mounting bracket – front and side views Spacer blocks 3 Verify that the strand clamps on the mounting bracket are facing the front of the SG4000. 4 Pass the two 5/16 × 18 bolts through the mounting bracket, through the spacer blocks, and into the same holes that contained the original strand clamp bolts.
Installation 5-7 Figure 5-7 illustrates the optional strand bracket installed on an SG4000. Figure 5-7 Optional strand bracket – installed Pedestal Mounting To mount the SG4000 in a pedestal or surface installation: 1 Remove the two 5/16 × 18 bolts and associated strand clamps from the top of the node housing base.
5-8 Installation Figure 5-8 illustrates the strand clamp bolts and pedestal mounting holes on the rear of the housing base. Figure 5-8 Pedestal or surface mounting Mounting holes 11.00 inches Strand clamp bolt Strand clamp bolt Grounding the SG4000 You can bond the node housing to a good earth ground by one of two methods. Figure 5-9 illustrates a sticker bearing the ground symbol and its location near the two grounding points on the housing casting.
Installation 5-9 For aerial metal-strand connections, the strand clamp is usually sufficient. However, an additional 5/16-inch bolt is included. Attach a wire from earth ground to this bolt and tighten securely into one of the pedestal mounting holes on the rear of the housing base. For pedestal installations, attach a ground wire to the extra 5/16-inch bolt and screw it into one of the strand clamp holes.
5-10 Installation Closing the Housing To close the SG4000 housing: 1 Verify that all maintenance is complete, carefully stow the fiber tray(s), and ensure that no cables or fibers will be pinched. 2 Close the housing and use a torque wrench to sequentially and progressively tighten the housing bolts to a final torque of 12 ft-lbs. in the sequence stamped on the housing lid as illustrated in Figure 5-11.
Appendix A Specifications Specifications for the SG4000 are valid over the given bandpass and operating temperature range listed in this section. The current catalog may contain additional information not provided below. Table A-1 lists the optical characteristics for the SG4000 node.
A-2 Specifications Table A-3 lists the general characteristics for the SG4000 node. Table A-3 SG4000 general characteristics Parameter Specifications AC input voltage 44 VAC through 95 VAC quasi-squarewave AC bypass current 15 A Hum modulation –65 dB @ 15 A bypass current Operating temperature –40°C through +60°C (–40°F through +140°F) Housing dimensions 22.8”(L) × 11”(W) × 10.6”(D) (57.9 cm × 27.5 cm × 26.9 cm) Weight Minimum 37 lbs./maximum 48 lbs. (16.78 / 21.
Specifications A-3 Table A-6 lists the typical power requirements for the SG4-PS power supply module. In a maximum configured capacity, including efficiency and power factor, the following are typical measurements. Table A-6 SG4-PS power requirements Power Supply Modules DC Current (Amps@ 24VDC) Power Consumed (Watts) One 2.9 90 Two 5.8 176 Three 5.8 179 Table A-7 lists distortion and c/n performance for the SG4000 with a load of 77 channels.
A-4 Specifications Table A-9 lists the RF performance specifications for the SG4-EIFPT laser transmitter. Table A-9 SG4-EIFPT RF specifications Parameter Specification Nominal RF input impedance 75 Ohms RF input passband 5 MHz through 65 MHz Flatness (peak to valley) 1.
Appendix B Torque Specifications Torque specifications are valid for all models of the SG4000 node. Torque Screw Size Wrench Size In-lbs Ft-lbs N•m Strand clamp/pedestal mounting 5/16–18 1/2 inch 120–144 10–12 13.6–16.3 Housing/lid closure 5/16–18 1/2 inch 144 12 16.3 External/internal port plugs 5/8–24 1/2 inch 25–40 2.1–3.3 2.8–4.5 Port seizure screw #8–32 1/16 inch 11–12 0.9–1.0 1.2–1.4 RF module chassis #8–32 1/4 inch 8–12 0.6–1.0 .8–1.
Abbreviations and Acronyms The abbreviations and acronyms list contains the full spelling of the short forms used in this manual.
Abbreviations and Acronyms-2 mW milliwatt NTSC National Television Standards Committee OMI optical modulation index P-V Peak-to-valley pA picoampere PIC power interconnect cable RF radio frequency RIN relative intensity noise RSA return for service authorization SC snap connector TCU thermal control unit V volt VCXO voltage controlled crystal oscillator XO crystal oscillator SG4000 Installation and Operation Manual
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