Comtech EF Data SDM-300A - Manual (Page 13)

SDM-300A Satellite Modem Revision 6
Preface MN/SDM300A.IOM
ix
CHAPTER 15. FLEX MUX ................................................................................................................................15–1
15.1 Introduction...............................................................................................................................................15–1
15.2 Installation.................................................................................................................................................15–6
15.3 50-Pin Connector Assignments...............................................................................................................15–8
CHAPTER 16. FAST ACCESSIBLE OPTIONS................................................................................................16–1
16.1 Introduction...............................................................................................................................................16–1
16.2 FAST Accessible Options ........................................................................................................................16–1
16.3 FAST System Theory................................................................................................................................16–3
16.4 Implementation .........................................................................................................................................16–3
16.5 Variable Data Rates ......................................................................................................................................16–6
CHAPTER 17. FLASH UPGRADING................................................................................................................17–1
CHAPTER 18. TROUBLESHOOTING ..............................................................................................................18–1
18.1 System Checkout......................................................................................................................................18–1
18.2 Interface Checkout....................................................................................................................................18–2
18.2.1 Modulator Checkout ...........................................................................................................................18–3
18.2.2 Demodulator Checkout ......................................................................................................................18–6
18.3 Fault Isolation............................................................................................................................................18–8
18.3.1 System Faults/Alarms ........................................................................................................................18–8
18.3.2 Faults/Alarms Display ......................................................................................................................18–12
18.3.3 Faults/Alarms Analysis.....................................................................................................................18–12
18.3.4 Remove and Replace Power Supply................................................................................................18–19
18.3.5 Remove and Replace the Fan Assembly .........................................................................................18–20
CHAPTER 19. SPECIFICATION.......................................................................................................................19–1
19.1 Specification Summary ............................................................................................................................19–1
19.2 Environmental and Physical Specifications...........................................................................................19–3
19.3 Remote Control Specifications................................................................................................................19–4
19.4 Modulator Specifications .........................................................................................................................19–5
19.4.1 Digital Data Rate ................................................................................................................................19–5
19.4.2 Modulation and Encoding Types........................................................................................................19–7
19.4.3 Scrambling Types ..............................................................................................................................19–8