Operation
SDM-309B Satellite Modem
3–8
MN/U-SDM309B Rev. #
3.1.4.3 Interface Configuration
TX_clock
Programs the clock source for the modem transmitter clock. “Internal” sets
the TX clock to operate from the modem internal clock, this is also the
fallback clock. “External” sets the TX clock to operate from the external
reference clock. This clock must be frequency locked to the data that is
being transmitted. “TX Terrestrial” sets the TX clock to recover timing from
the incoming data.
On entry the current transmit clock setting is displayed with the flashing
cursor on the first character. Use the arrow keys to select “Internal”,
“External Reference”, or TX Terrestrial” clock. Press the “ENTER” key to
execute the change.
BUF_Clk
Programs the interface plesiochronous buffer output clock. “TX Terrestrial”
sets the buffer output clock to recover timing from the incoming TX data
clock. “External” sets this clock source to the external reference clock.
‘satellite” sets the output buffer clock to the satellite clock, this is also the
fallback clock. If ‘satellite” is selected, the doppler shift caused by the
satellite will not be removed. “Internal” set the buffer clock to operate from
the modem internal clock.
On entry the current setting of the plesiochronous buffer clock is displayed
with the flashing cursor on the first character. Use the arrow keys to select
‘satellite”, “Internal”, “Ext Ref”, or “TX_Terr” for the buffer clock. Press the
“ENTER” key to execute the change.
RX_Clock
Programs the RX clock to “Normal” or “Inverted”.
On entry the current status of the RX Clock is displayed with the flashing
cursor on the first character. Use the arrow keys to select “Normal” or
“Inverted”. Press the “ENTER” key to execute the change.
Ext_REF
Program the external reference clock input frequency between 8 KHz and
10 MHz in 8 KHz Steps.
On entry the current setting for the external reference is displayed with the
flashing cursor on the first character. Use the right and left arrow keys to
move the flashing cursor and the up and down arrow keys to increment or
decrement the digit at the flashing cursor. Press the “ENTER” key to
execute the change.
BBLoopBk
*Programs the modem for baseband loopback operation. When baseband
loopback is turned on data is looped back on the customer side of the
interface. This is a bidirectional loopback of the baseband data. See Figure
3-10 for a block diagram of baseband loopback operation.
On entry the current status is displayed with the flashing cursor on the first
character. Use the arrow keys to select ON or OFF. Press the “ENTER” key
to execute the change.
INTF_LBk
*Programs the modem for interface loopback operation. When interface
loop-back is turned on data is looped back on the modem side of the
interface. This is a bidirectional loopback of the data after the baseband
data has had the 16/15 overhead added. See Figure 3-11 for a block
diagram of interface loopback operation.
On entry the current status is displayed with the flashing cursor on the first
character. Use the arrow keys to select ON or OFF. Press the “ENTER” key
to execute the change.
Содержание SDM-309B
Страница 7: ...Preface SDM 309B Satellite Modem iv Rev 0 This page is intentionally blank ...
Страница 13: ...Table of Contents SDM 309B Satellite Modem x Rev 0 This page is intentionally blank ...
Страница 16: ...SDM 309B Satellite Modem Introduction MN U SDM309B Rev 1 1 3 Figure 1 1 SDM 309B Modem ...
Страница 18: ...SDM 309B Satellite Modem Introduction MN U SDM309B Rev 1 1 5 Figure 1 3 Modular Construction ...
Страница 19: ...Introduction SDM 309B Satellite Modem 1 1 6 MN U SDM309B Rev Figure 1 4 SDM 309B Block Diagram ...
Страница 23: ...Introduction SDM 309B Satellite Modem 1 1 10 MN U SDM309B Rev Figure 1 5 Typical Bit Error Rate Performance ...
Страница 25: ...Introduction SDM 309B Satellite Modem 1 1 12 MN U SDM309B Rev ...
Страница 28: ...SDM 309B Satellite Modem Installation MN U SDM309B Rev 2 2 3 Figure 2 1 Rear Panel View ...
Страница 34: ...SDM 309B Satellite Modem Operation MN U SDM309B Rev 3 3 Figure 3 1 Front Panel View ...
Страница 47: ...Operation SDM 309B Satellite Modem 3 16 MN U SDM309B Rev Figure 3 2 Menu Tree ...
Страница 48: ...SDM 309B Satellite Modem Operation MN U SDM309B Rev 3 17 Figure 3 3 Menu Tree ...
Страница 49: ...Operation SDM 309B Satellite Modem 3 18 MN U SDM309B Rev Figure 3 4 Menu Tree ...
Страница 50: ...SDM 309B Satellite Modem Operation MN U SDM309B Rev 3 19 Figure 3 5 Menu Tree ...
Страница 51: ...Operation SDM 309B Satellite Modem 3 20 MN U SDM309B Rev Figure 3 6 Menu Tree ...
Страница 52: ...SDM 309B Satellite Modem Operation MN U SDM309B Rev 3 21 Figure 3 7 Menu Tree ...
Страница 53: ...Operation SDM 309B Satellite Modem 3 22 MN U SDM309B Rev Figure 3 8 IF Loopback ...
Страница 54: ...SDM 309B Satellite Modem Operation MN U SDM309B Rev 3 23 Figure 3 9 RF Loopback ...
Страница 55: ...Operation SDM 309B Satellite Modem 3 24 MN U SDM309B Rev Figure 3 10 Interface Loopback ...
Страница 56: ...SDM 309B Satellite Modem Operation MN U SDM309B Rev 3 25 Figure 3 11 Baseband Loopback ...
Страница 71: ...Operation SDM 309B Satellite Modem 3 40 MN U SDM309B Rev Figure 3 12 Menu Tree ...
Страница 72: ...SDM 309B Satellite Modem Operation MN U SDM309B Rev 3 41 Figure 3 13 Menu Tree ...
Страница 73: ...Operation SDM 309B Satellite Modem 3 42 MN U SDM309B Rev Figure 3 14 Menu Tree ...
Страница 74: ...SDM 309B Satellite Modem Operation MN U SDM309B Rev 3 43 Figure 3 15 Menu Tree ...
Страница 75: ...Operation SDM 309B Satellite Modem 3 44 MN U SDM309B Rev Figure 3 16 Menu Tree ...
Страница 76: ...SDM 309B Satellite Modem Operation MN U SDM309B Rev 3 45 Figure 3 17 Menu Tree ...
Страница 77: ...Operation SDM 309B Satellite Modem 3 46 MN U SDM309B Rev ...
Страница 80: ...SDM 309B Satellite Modem M C and Interfaces MN U SDM309B Rev 4 4 3 Figure 4 1 Monitor Control Card ...
Страница 86: ...SDM 309B Satellite Modem M C and Interfaces MN U SDM309B Rev 4 4 9 Figure 4 2 IBS Interface Module ...
Страница 87: ...M C and Interfaces SDM 309B Satellite Modem 4 4 10 MN U SDM309B Rev Figure 4 3 IBS Interface Block Diagram ...
Страница 88: ...SDM 309B Satellite Modem M C and Interfaces MN U SDM309B Rev 4 4 11 Figure 4 4 IBS Fault Tree ...
Страница 89: ...M C and Interfaces SDM 309B Satellite Modem 4 4 12 MN U SDM309B Rev Figure 4 5 Jumper Table ...
Страница 95: ...M C and Interfaces SDM 309B Satellite Modem 4 4 18 MN U SDM309B Rev Figure 4 6 IBS Break Out Panel ...
Страница 105: ...M C and Interfaces SDM 309B Satellite Modem 4 4 28 MN U SDM309B Rev Figure 4 8 Drop and Insert Channel Unit ...
Страница 106: ...SDM 309B Satellite Modem M C and Interfaces MN U SDM309B Rev 4 4 29 Figure 4 9 Drop and Insert Block Diagram ...
Страница 107: ...M C and Interfaces SDM 309B Satellite Modem 4 4 30 MN U SDM309B Rev Figure 4 10 Drop Insert Fault Tree ...
Страница 108: ...SDM 309B Satellite Modem M C and Interfaces MN U SDM309B Rev 4 4 31 Figure 4 11 Drop Insert Jumper Table ...
Страница 112: ...SDM 309B Satellite Modem M C and Interfaces MN U SDM309B Rev 4 4 35 Figure 4 12 Drop and Insert Break Out Panel ...
Страница 118: ...SDM 309B Satellite Modem M C and Interfaces MN U SDM309B Rev 4 4 41 Figure 4 13 Rear Panel Switch Diagram ...
Страница 120: ...SDM 309B Satellite Modem M C and Interfaces MN U SDM309B Rev 4 4 43 Figure 4 14 Drop and Insert Schematic Diagram ...
Страница 127: ...SDM 309B Satellite Modem Theory of Operation MN U SDM309B Rev 5 5 3 Figure 5 1 Modulator Card ...
Страница 128: ...Theory of Operation SDM 309B Satellite Modem 5 5 4 MN U SDM309B Rev Figure 5 2 Modulator Block Diagram ...
Страница 129: ...SDM 309B Satellite Modem Theory of Operation MN U SDM309B Rev 5 5 5 Figure 5 3 Modulator Output Spectral Occupancy ...
Страница 133: ...SDM 309B Satellite Modem Theory of Operation MN U SDM309B Rev 5 5 9 Figure 5 4 Viterbi Decoder AS 0701 ...
Страница 134: ...Theory of Operation SDM 309B Satellite Modem 5 5 10 MN U SDM309B Rev Figure 5 5 Viterbi Decoder AS 0949 ...
Страница 135: ...SDM 309B Satellite Modem Theory of Operation MN U SDM309B Rev 5 5 11 Figure 5 6 Viterbi Decoder AS 2133 ...
Страница 136: ...Theory of Operation SDM 309B Satellite Modem 5 5 12 MN U SDM309B Rev Figure 5 7 Viterbi Decoder Block Diagram ...
Страница 137: ...SDM 309B Satellite Modem Theory of Operation MN U SDM309B Rev 5 5 13 Figure 5 8 Typical Decoder BER Performance ...
Страница 141: ...SDM 309B Satellite Modem Theory of Operation MN U SDM309B Rev 5 5 17 Figure 5 9 Demodulator Card ...
Страница 142: ...Theory of Operation SDM 309B Satellite Modem 5 5 18 MN U SDM309B Rev Figure 5 10 Demodulator Block Diagram ...
Страница 148: ...SDM 309B Satellite Modem Maintenance MN U SDM309B Rev 6 6 3 Figure 6 1 Typical Output Spectrum ...
Страница 149: ...Maintenance SDM 309B Satellite Modem 6 6 4 MN U SDM309B Rev Figure 6 2 Output Spectrum With Noise ...
Страница 151: ...Maintenance SDM 309B Satellite Modem 6 6 6 MN U SDM309B Rev Figure 6 3 Typical Eye Patterns ...
Страница 152: ...SDM 309B Satellite Modem Maintenance MN U SDM309B Rev 6 6 7 Figure 6 4 Typical Eye Constellations ...
Страница 166: ...SDM 309B Satellite Modem Maintenance MN U SDM309B Rev 6 6 21 Figure 6 10 Rear View Without Cover ...
Страница 171: ...SDM 309B Satellite Modem Data Rates and Filters MN U SDM309B Rev A 3 Figure A 1 Modulator Filter Card Change ...
Страница 172: ...Data Rates and Filters SDM 309B Satellite Modem A 4 MN U SDM309B Rev Figure A 2 Demodulator Filter Card Change ...
Страница 173: ...SDM 309B Satellite Modem Data Rates and Filters MN U SDM309B Rev A 5 Figure A 3 Fixed Rate Modulator Filter ...
Страница 174: ...Data Rates and Filters SDM 309B Satellite Modem A 6 MN U SDM309B Rev Figure A 4 Fixed Rate Demodulator Filter ...
Страница 175: ...SDM 309B Satellite Modem Data Rates and Filters MN U SDM309B Rev A 7 Figure A 5 Variable Rate Modulator Filter ...
Страница 176: ...Data Rates and Filters SDM 309B Satellite Modem A 8 MN U SDM309B Rev Figure A 6 Variable Rate Demodulator Filter ...
Страница 177: ...SDM 309B Satellite Modem Data Rates and Filters MN U SDM309B Rev A 9 ...
Страница 207: ...Remote Control SDM 309B Satellite Modem B B 30 MN U SDM309B Rev Where x xx is the software version number ...
Страница 211: ...External Channel Unit SDM 309B Satellite Modem C C 4 MN U SDM309B Rev Figure C 2 System Interconnect Diagram ...
Страница 212: ...SDM 309B Satellite Modem External Channel Unit MN U SDM309B Rev C C 5 Figure C 3 Adapter Cable AS 0749 V 35 ...
Страница 213: ...External Channel Unit SDM 309B Satellite Modem C C 6 MN U SDM309B Rev Figure C 4 Adapter Cable AS 0750 V 35 ...
Страница 214: ...SDM 309B Satellite Modem External Channel Unit MN U SDM309B Rev C C 7 Figure C 5 Adapter Cable AS 0751 RS449 ...
Страница 215: ...External Channel Unit SDM 309B Satellite Modem C C 8 MN U SDM309B Rev Figure C 6 Adapter Cable AS 0752 15 Pin D ...
Страница 216: ...SDM 309B Satellite Modem External Channel Unit MN U SDM309B Rev C C 9 Figure C 7 Adapter Cable AS 0741 RS449 ...
Страница 217: ...External Channel Unit SDM 309B Satellite Modem C C 10 MN U SDM309B Rev Figure C 8 Adapter Cable AS 0753 15 Pin D ...
Страница 220: ...SDM 309B Satellite Modem External Channel Unit MN U SDM309B Rev C C 13 Figure C 9 RS422 MIL STD 188 114 Interface ...
Страница 221: ...External Channel Unit SDM 309B Satellite Modem C C 14 MN U SDM309B Rev Figure C 10 RS422 MIL STD 188 114 Block Diagram ...
Страница 226: ...SDM 309B Satellite Modem External Channel Unit MN U SDM309B Rev C C 19 Figure C 11 V 35 Interface Card ...
Страница 227: ...External Channel Unit SDM 309B Satellite Modem C C 20 MN U SDM309B Rev Figure C 12 V 35 Interface Block Diagram ...
Страница 235: ...External Channel Unit SDM 309B Satellite Modem C C 28 MN U SDM309B Rev Figure C 13 Menu Tree ...
Страница 236: ...SDM 309B Satellite Modem External Channel Unit MN U SDM309B Rev C C 29 Figure C 14 Menu Tree ...
Страница 237: ...External Channel Unit SDM 309B Satellite Modem C C 30 MN U SDM309B Rev Figure C 15 Menu Tree ...
Страница 238: ...SDM 309B Satellite Modem External Channel Unit MN U SDM309B Rev C C 31 ...
