Comtech EF Data SDM-650B User Manual
Page 20
Table of Contents
SDM-650B Satellite Modem
xvi
Rev. 5
G.6.4.1.3.3 Select Modulator Rate Variable....................................................................................G–21
G.6.4.1.3.4 Set Modulator Power Offset .........................................................................................G–21
G.6.4.1.3.5 Set Modulator Output Power Level ..............................................................................G–22
G.6.4.1.3.6 Scrambler Enable..........................................................................................................G–22
G.6.4.1.3.7 Differential Encoder Enable .........................................................................................G–22
G.6.4.2 Demodulator ................................................................................................................................G–23
G.6.4.2.1 Set Demodulator Frequency.................................................................................................G–23
G.6.4.2.2 Demodulator Rate ................................................................................................................G–23
G.6.4.2.2.1 Demodulator Filter Rate Assignment ...........................................................................G–24
G.6.4.2.2.2 Select Demodulator Rate ..............................................................................................G–24
G.6.4.2.2.3 Select Demodulator Rate Variable................................................................................G–24
G.6.4.2.3 Descramble Enable...............................................................................................................G–25
G.6.4.2.4 IF Loopback .........................................................................................................................G–25
G.6.4.2.5 RF Loopback........................................................................................................................G–25
G.6.4.2.6 Sweep Reacquisition ............................................................................................................G–25
G.6.4.2.7 Fast Acquisition Mode .........................................................................................................G–26
G.6.4.2.8 Sweep Center Frequency......................................................................................................G–26
G.6.4.2.9 Sweep Width Range.............................................................................................................G–27
G.6.4.2.10 Sweep Direction .................................................................................................................G–27
G.6.4.2.11 Bit Error Rate Threshold ....................................................................................................G–27
G.6.4.3 Interface/Doppler Buffer .............................................................................................................G–28
G.6.4.3.1 Baseband Loopback .............................................................................................................G–28
G.6.4.3.2 Transmit Clock.....................................................................................................................G–28
G.6.4.3.3 Receive Clock ......................................................................................................................G–28
G.6.4.3.4 External Reference Frequency .............................................................................................G–28
G.6.4.3.5 Interface Reference Clock....................................................................................................G–29
G.6.4.3.6 Interface Buffer Center ........................................................................................................G–29
G.6.4.3.7 Interface Buffer Depth .........................................................................................................G–29
G.6.4.4 System Commands/Responses ....................................................................................................G–30
G.6.4.4.1 Time of Day .........................................................................................................................G–30
G.6.4.4.2 Date ......................................................................................................................................G–30
G.6.4.4.3 Remote .................................................................................................................................G–31
G.6.4.4.4 Clear Stored Faults...............................................................................................................G–31
G.6.4.4.5 Modem Operation Mode ......................................................................................................G–31
G.6.4.5 Status Commands/Responses ......................................................................................................G–32
G.6.4.5.1 Configuration .......................................................................................................................G–32
G.6.4.5.1.1 Modulator/Coder Configuration Status.........................................................................G–32
G.6.4.5.1.2 Modulator/Coder Configuration Program.....................................................................G–33
G.6.4.5.1.3 Demodulator/Decoder Configuration Status.................................................................G–33
G.6.4.5.1.4 Demodulator/Decoder Configuration Program.............................................................G–34
G.6.4.5.1.5 Interface Configuration Status ......................................................................................G–34
G.6.4.5.2 Modem Faults Status (Summary).........................................................................................G–35
G.6.4.5.3 Modulator Status ..................................................................................................................G–35
G.6.4.5.4 Demodulator Status..............................................................................................................G–35
G.6.4.5.5 Common Equipment Status..................................................................................................G–36
G.6.4.5.6 Bit Error Rate Status ............................................................................................................G–36
G.6.4.5.6.1 Raw BER ......................................................................................................................G–36
G.6.4.5.6.2 Corrected BER..............................................................................................................G–37
G.6.4.5.7 E
b
/N
0
.....................................................................................................................................G–37
G.6.4.5.8 Modulator Rate.....................................................................................................................G–37
G.6.4.5.9 Demodulator Rate ................................................................................................................G–38
G.6.4.5.10 Receive Signal Level..........................................................................................................G–38
G.6.4.5.11 Current Sweep Value .........................................................................................................G–38
G.6.4.5.12 Stored Faults ......................................................................................................................G–38