Comtech EF Data SMS-458B User Manual
Page 6
SMS-458B Modem Protection Switch
Revision 2
Preface
MN/SMS458B.IOM
iv
CHAPTER 3. FRONT PANEL OPERATION ............................................................. 3–1
3.1 Overview .......................................................................................................................................................3–1
3.2 LED Indicators .............................................................................................................................................3–2
3.3 Keypad and LCD Display............................................................................................................................3–3
3.4 System and Modem Setup ...........................................................................................................................3–7
3.4.1 Prime Uplink and Downlink Ports..........................................................................................................3–7
3.4.2 System Setup ..........................................................................................................................................3–7
3.4.2.1 Time and Date Menu .......................................................................................................................3–8
3.4.2.2 Active Downlink Option Menu .......................................................................................................3–8
3.4.2.3 Active Prime Modulators Menu ......................................................................................................3–9
3.4.2.4 Active Prime Demodulators Menu ..................................................................................................3–9
3.4.2.5 Active Backup Modulators Menu ...................................................................................................3–9
3.4.2.6 Active Backup Demodulators Menu ...............................................................................................3–9
3.4.2.7 Modem Addresses Menu.................................................................................................................3–9
3.4.2.8 Prime Channel Unit Menu.............................................................................................................3–10
3.4.2.9 Backup Channel Unit Menu ..........................................................................................................3–10
3.4.3 Modem Setup........................................................................................................................................3–10
3.4.3.1 Downlink Selection Menu.............................................................................................................3–11
3.4.3.2 Demodulator Priorities Menus ......................................................................................................3–11
3.4.3.3 Modulator Priorities Menus...........................................................................................................3–11
3.4.3.4 Demodulator Delay .......................................................................................................................3–12
3.4.3.5 Modulator Delay............................................................................................................................3–12
3.4.3.6 Channel Unit Selection..................................................................................................................3–13
3.4.4 Modem Configuration...........................................................................................................................3–13
3.4.4.1 Prime and Backup Modem Configuration.....................................................................................3–13
3.4.4.2 Modem Configuration Menu .........................................................................................................3–14
3.4.5 Operation Modes ..................................................................................................................................3–15
3.4.5.1 Bypass Mode .................................................................................................................................3–15
3.4.5.2 Auto Mode.....................................................................................................................................3–15
3.4.5.3 Local Mode....................................................................................................................................3–18
3.4.5.4 Remote Mode ................................................................................................................................3–18
3.4.6 Faults ....................................................................................................................................................3–19
3.4.6.1 Modulator Operation Fault ............................................................................................................3–22
3.4.6.2 Demodulator Operation Fault........................................................................................................3–22
3.4.6.3 M:N Faults.....................................................................................................................................3–22
3.4.6.4 Battery Faults ................................................................................................................................3–23
3.4.7 Front Panel Theory of Operation ..........................................................................................................3–23