CHAPTER 2: Installation
List of Contents
2.1 Introduction ............................................................... 2-2
2.1.1 Read This First! ............................................................ 2-2
2.1.2 General ...................................................................... 2-2
2.1.3 Site Requirements ..................................................... 2-2
2.1.3.1 Power Supplies .......................................................... 2-2
2.1.3.2 Environment ............................................................... 2-2
2.1.4 EMC Compliance Statements ................................ 2-2
2.1.4.1 EN 55022 ..................................................................... 2-2
2.1.4.2 FCC ............................................................................. 2-2
2.2 Preliminary Checks ................................................... 2-3
2.2.1 Mechanical Inspection ............................................ 2-3
2.2.2 Moving the Equipment Safely ................................. 2-3
2.3 Unpacking and Inspection ...................................... 2-3
2.3.1 Unpac kin g .................................................................. 2-3
2.3.2 Inventory ..................................................................... 2-4
2.4 Installing the equipment .......................................... 2-4
2.4.1 Modulator Rack Mounting Support Kit .................. 2-4
2.4.2 Cable Routing ........................................................... 2-5
2.4.3 Equipment Access .................................................... 2-5
2.4.4 Ventilation .................................................................. 2-5
2.5 Power Requirements and Earthing ........................ 2-6
2.5.1 Power Cables ............................................................ 2-6
2.5.2 AC Power ................................................................... 2-7
2.5.2.1 Connecting the SBM75e Modulator to the AC
power Supply ............................................................. 2-7
2.5.2.2 General ...................................................................... 2-7
2.5.2.3 Protective Earth/Technical Earth ............................ 2-8
2.6 Signal Connections ................................................... 2-9
2.6.1 M&C Connector - RS232 .......................................... 2-9
2.6.2 M&C Connector – RS485 ......................................... 2-9
2.6.3 M&C Connector - 10/100BaseT Ethernet ............ 2-10
2.6.4 Monitor and Control Alarms .................................. 2-10
2.6.5 Redun dancy ............................................................ 2-11
2.6.6 RF (L-Band) Output Connector ............................. 2-12
2.6.7 ASI Input Connector ............................................... 2-12
2.6.8 1Pulse Per Second (1PPS) InputConnector ......... 2-12
2.6.9 External Reference Input Connector ................... 2-13
2.6.10 70/140 MHz (IF) Output Connector ...................... 2-13
2.7 Configuring the Modulator for Best
Performance ............................................................ 2-13
2.7.1 Bringing the Modulator Online .............................. 2-13
2.7.2 Choice of FEC .......................................................... 2-14
2.7.3 Pilots Insertion ........................................................... 2-15
List of Figures
Figure 2.1: Rack Mount Support Kit ............................................ 2-5
Figure 2.2: Air Path Through the Enclosure ................................ 2-6
Figure 2.3: Location of AC power connector .......................... 2-7
Figure 2.4: Location of Technical Earth ..................................... 2-8
List of Tables
Table 2.1: SBM75e Modulator Rack Mounting Support Kits .... 2-4
Table 2.2: Supply Cable Wiring Colours ..................................... 2-8
Table 2.3: Non Standard Supply Cord Wire Colours ................ 2-8
Table 2.4: M&C Connector RS232 .............................................. 2-9
Table 2.5: M&C Connector – RS485 ........................................... 2-9
Table 2.6: M&C Connector - 10/100BaseT Ethernet .............. 2-10
Table 2.8: Alarm Connector Pin-outs ....................................... 2-10
Table 2.9: RF (L-Band) Output Connector ............................... 2-12
Table 2.10: ASI Input Connector ............................................... 2-12
Table 2.11: 1PPS Input Connector ........................................... 2-13
Table 2.12: Ext Ref In Connector............................................... 2-13
Table 2.13: 70/140 MHz (IF) Output Connector ...................... 2-13
Table 2.14: FEC/Mode/Rate Configuration Values ............... 2-15
SBD75e Series Modulator Installation and Operation Manual 2-1
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General