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DMD15/DMD15L/DMD15/DMD15LL/DMD15/DMD15LIBS/IDR Satellite Modem

Glossary

TM051 - Rev. 5.8

G-5

R

RAM

Random Access Memory

RF Radio

Frequency

ROM

Read Only Memory

rms

Root Mean Square

RU

Rack Unit. 1 RU = 1.75”

Rx Receive

(Receiver)

RxD Receive

Data

R-S

Reed-Solomon Coding. Reed-Solomon codes are block-based error correcting
codes with a wide range of applications in digital communications and storage.

S

SEQ Sequential

SYNC Synchronize

T

TBD

To Be Designed or To Be Determined

TM Technical

Manual

TPC

Turbo Product Codes

TRE Trellis

Tx Transmit

(Transmitter)

TxD Transmit

Data

U

UART

Universal Asynchronous Receiver/Transmitter

UUT

Unit Under Test

V

V Volts

VAC

Volts, Alternating Current

VCO

Voltage Controlled Oscillator

VDC

Volts, Direct Current

VIT Viterbi

Decoding

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Содержание DMD15

Страница 1: ...OTICE 2005 Radyne Inc This manual may not in whole or in part be copied reproduced translated or reduced to any electronic or magnetic storage medium without the written consent of a duly authorized o...

Страница 2: ......

Страница 3: ...sized packets The remote M C MUST make use of the non volatile count value to index to the start of the Volatile Section If the remote M C is not aware of the newly added features to the product it s...

Страница 4: ...neglect failure to use products under normal operating conditions failure to use products according to any operating instructions provided by Radyne Inc lack of routine care and maintenance as indicat...

Страница 5: ...riting or by calling Radyne Inc 3138 E Elwood St Phoenix Arizona 85034 USA ATTN Customer Support Phone 602 437 9620 Fax 602 437 4811 Any product returned to Radyne Inc for examination must be sent pre...

Страница 6: ...face Settings updated Specifications Section 2 1 9 16 96 Added DMD15 DMD15L Terminal Screens Appendix C added Modem Loopback Figures expanded Principles of Operation Section added IBS Conditions and F...

Страница 7: ...DMD15 DMD15L IBS IDR Satellite Modem TM051 Rev 5 8 vi...

Страница 8: ..._______________________ 1 2 1 1 9 Earth Station to Earth Station ES ES Communications ________________ 1 2 1 1 10 Analog AGC Voltage ___________________________________________ 1 2 1 1 11 Internal Eng...

Страница 9: ...3 9 1 Asynchronous Serial Port 1 ______________________________________ 3 9 3 9 2 Serial Port 2 __________________________________________________ 3 9 3 9 3 Serial Port 3 ____________________________...

Страница 10: ..._____________________ 3 16 3 16 2 PCM 30C ___________________________________________________ 3 16 3 16 3 PCM 31 ____________________________________________________ 3 16 3 16 4 PCM 31C ______________...

Страница 11: ...__________________________ 4 14 4 3 6 Monitor Menu Options and Parameters _____________________________ 4 16 4 3 7 Alarms Menu Options and Parameters _____________________________ 4 17 4 3 8 System Me...

Страница 12: ...1 __________________________________________________ 5 6 5 13 TERMINAL J12 ________________________________________________ 5 7 5 14 REMOTE J13 _________________________________________________ 5 7 5...

Страница 13: ...nal ___________________________ 7 2 7 5 Terrestrial Interfaces ______________________________________________ 7 3 7 6 Universal Interface _______________________________________________ 7 3 7 7 Enviro...

Страница 14: ...ny data rate is provided over the range of 9 6 Kbps to 10 Mbps in 1 bps steps For applications requiring system redundancy the DMD15 DMD15L Modem may be used with the Radyne Inc RCS11 1 1 Redundancy S...

Страница 15: ...The 16QAM option can be added by installing 2 ICs into existing sockets 1 1 8 Sequential Decoding The DMD15 DMD15L can be equipped with a sequential decoding option that can be installed as an add on...

Страница 16: ...Interface Module Synchronous Interface Module These Interface Modules are available with AC or DC Power Input Modules and the following Transmit and Receive schemes IF Transmit and Receive L Band Tran...

Страница 17: ......

Страница 18: ...is under any circumstances Before initially applying power to the unit it is a good idea to disconnect the transmit output from the operating ground station equipment This is especially true if the cu...

Страница 19: ...tput signal integrity and proper receive operation Do not mount the DMD15 DMD15L in an unprotected outdoor location where there is direct contact with rain snow wind or sun The modem is designed for i...

Страница 20: ...ssume that the DMD15 DMD15L is installed in a suitable location with prime AC power and supporting equipment available 2 5 1 Initial Power Up Before initial power up of the DMD15 DMD15L it is a good i...

Страница 21: ...ng full screen access to all of the modem s parameters but requires a separate terminal or computer running a Terminal Program The unit is placed into terminal mode by setting two options via the Fron...

Страница 22: ...ections Universal Interface Baseband Processing and Universal Modem 3 1 DMD15 DMD15L Functional Block Diagram Figures 3 1a through 3 1c represent the DMD15 DMD15L Functional Blocks The modem is shown...

Страница 23: ...5L IBS IDR Satellite Modem 3 2 TM051 Rev 5 8 Figure 3 1b Alternate 1 DMD15 DMD15L Universal Satellite Modem Functional Block Diagram Figure 3 1c Alternate 2 DMD15 DMD15L Universal Satellite Modem Func...

Страница 24: ...J3 J8 for Terrestrial Data and Clock to the Modem The UIM also contains a Connection Port for an Asynchronous Data Channel J9 for use in Earth Station to Earth Station ES ES communications Additionall...

Страница 25: ...03 Receiver The G 703 Receiver recovers a clock from the data stream converts the clock and data to an RS 422 balanced format and routes the clock and data to the BB Processor The reverse process is p...

Страница 26: ...ransmission to the satellite providing a far end loopback Tx Rx Loopback provides both loopbacks simultaneously Refer to Figures 3 4 through 3 6 for loopback functional block diagrams 3 7 Modem Status...

Страница 27: ...Operation DMD15 DMD15L IBS IDR Satellite Modem 3 6 TM051 Rev 5 8 Figure 3 4 Loopback Functional Block Diagram...

Страница 28: ...DMD15 DMD15L IBS IDR Satellite Modem Operation TM051 Rev 5 8 3 7 Figure 3 5 Loopback Functional Block Diagram Figure 3 6 Loopback Functional Block Diagram...

Страница 29: ...e Tx Data and Clock enters the Baseband Processor passes through a Rate Adapting FIFO and enters the Framer Drop Processor In Closed Net Mode the data passes through the framer unaltered In IDR IBS an...

Страница 30: ...is the M C Subsystem The M C contains a high performance Motorola 68302 Microprocessor and is responsible for overall command and control of modem functions The M C is constantly monitoring all subsys...

Страница 31: ...AM Modulator Phase Lock Receiver Convolutional Encoder Viterbi Decoder sequential decoding option Differential Encoder Decoder and a V 35 Scrambler Descrambler 3 10 1 Modulator Processed baseband data...

Страница 32: ...CTE is sometimes referred to as Tx Terrestrial Timing and for Synchronous Interfaces such as RS 422 SCTE is sometimes referred to as TT Terminal Timing 3 11 2 SCT Serial Clock Transmit This clock is a...

Страница 33: ...by the Modulator Clock The Modulator Clock and Phase Locked Loop PLL in conjunction with the Dejitter FIFO reduces the input jitter Jitter reduction exceeds the jitter transfer specified in CCITT G 82...

Страница 34: ...user to select the terrestrial T1 or E1 timeslots that are to be dropped off for transmission over the link in the specified satellite channels The Insert function allows the user to select the T1 or...

Страница 35: ...Operation DMD15 DMD15L IBS IDR Satellite Modem 3 14 TM051 Rev 5 8 Figure 3 8 Looped Modems Figure 3 9 Looped Modems with Separate D I Trunks...

Страница 36: ...s available it should be input via the Insert Data In Port The Terrestrial Data is buffered inside the Modem The RX Baseband Processor inserts satellite data into the selected timeslots in the G 704 F...

Страница 37: ...he user In PCM 30 mode the user may not select timeslot 16 as a Drop or Insert Timeslot 3 16 2 PCM 30C The PCM 30C Mode of Operation supports an E1 Interface with Multiframe Alignment MFAS and Channel...

Страница 38: ...n timeslots to insert where n 1 2 3 4 5 6 8 10 12 15 16 20 24 or 30 In the DMD15 DMD15L Robbed Bit Signaling RBS is handled without any need for operator intervention and is transparent to the user 3...

Страница 39: ...For a modem w Drop Insert enabled at a data rate of 256 with timeslots assigned 1 1 2 2 etc At a data rate of 256 the modem will allow 4 channels to assign timeslots to Under the Tx Menu assign the t...

Страница 40: ...the Receive Side 1 With Rx Side Channels configured as follows CH1 to TS1 CH2 to TS2 CH3 to TS3 and CH4 to TS4 2 After the timeslots are assigned properly scroll to the Mapping Menu and use the above...

Страница 41: ...nt to the modulator where it is convolutionally encoded modulated and transmitted to the satellite When the signal is received and demodulated by the Receiving Modem it is fed to a Viterbi Decoder for...

Страница 42: ...DMD15 DMD15L IBS IDR Satellite Modem Operation TM051 Rev 5 8 3 21 Figure 3 15 Reed Solomon Decoder Functional Block Diagram...

Страница 43: ...896 0 0899 0 0899 4 4 4 4 9 7 2 2 8PSK 1544 2048 6312 8448 219 201 9 219 201 9 219 201 9 219 201 9 0 0896 0 0896 0 0896 0 0896 8 8 8 8 18 13 4 3 NOTES 1 n code length k information symbols and t symbo...

Страница 44: ...irections simultaneously Modem A is transmitting to modem B under normal conditions and modem B has a receive Eb No of 7 5 dB Modem A has been set to an AUPC Eb No on the Front Panel of 7 5 dB and is...

Страница 45: ...hanced Async IBS Async the Baud Rate is selectable but Data Rate is limited The maximum Baud Rate is 19 200 bps for IBS Async Two software controlled modes are designed into the card to best utilize t...

Страница 46: ...Operation TM051 Rev 5 8 3 25 896 19200 960 19200 1024 19200 1088 19200 1152 19200 1216 19200 1280 19200 1344 19200 1408 19200 1472 19200 1536 19200 1600 19200 1664 19200 1728 19200 1792 19200 1856 19...

Страница 47: ...ard IBS mode are not used an Enhanced Multiplexer Mode has been implemented that can be engaged under software control Since this mode changes the use of many of the framed non data bits this mode is...

Страница 48: ...ndications are to be disabled connect the following pins of the ESC ALARMS Port Connect Pins 1 10 11 22 and 23 connect all together Pin 1 is ground and Pins 10 11 22 and 23 are the inputs of Backward...

Страница 49: ...reacquisition sweep limits to acquire signal Reacquisition limits OPCode 0x2A2F 0 32000 Hz Sweep Delay 0 Normal operation Start Delay Timer Timer Expired Go back to normal sweep limits to acquire sig...

Страница 50: ...DMD15 DMD15L IBS IDR Satellite Modem Operation TM051 Rev 5 8 3 29...

Страница 51: ......

Страница 52: ...labeling of the front panel The front panel is divided into four functional areas the LCD Front Panel Display the Cursor Control Arrow Keys the Numeric Keypad and the Front Panel LED Indicators each d...

Страница 53: ...c Keypad A 10 Key Numeric Keypad with 2 additional keys for the Enter and Clear function allows the entry of data into the system Table 4 2 describes the functions available at the Front Panel Table 4...

Страница 54: ...inor Alarm Yellow Indicates that a Receive Warning Condition exists Test Mode Yellow Indicates that the receiver is involved in a current Test Mode activity Modulator LED Indicators Transmit ON Green...

Страница 55: ...IDR IBS Closed Net Drop Insert Used with IDR or IBS Interface Only The Mode Command sets a number of parameters within the modem to meet a set specification The purpose is to eliminate keystrokes and...

Страница 56: ...Type V 35 Spectrum Mask Intelsat For Data Rates 1 544 Framing Type 1 15 IBS Scrambler Type IESS 309 Spectrum Mask Intelsat IBS Mode IESS 309 For Data Rates 2048 Framing Type 1 15 IBS Scrambler Type IE...

Страница 57: ...e output power level setting crosses this threshold the modulator may glitch and undershoot the output momentarily Carrier Ctrl On Off The DMD15 transmitter will turn off the carrier output automatica...

Страница 58: ...Sel None V 35 IESS V 35 CITT V 35 EF IBS CCITT V 35FC OM73 V 35EF_RS TPC SCRAMBLER Turbo Codec Allows the user to select the scrambler type Scrmbl Ctrl Allows the user to enable or disable scrambler o...

Страница 59: ...ration and cannot be changed while the unit is in the given mode of operation IDR Mode IESS 308 For Data rates 1 544 2 048 6 312 8 448 Mbps Framing Type 96 Kbps IDR Descrambler type V 35 Spectrum Mask...

Страница 60: ...8PSK 16QAM Allows the user to select the demodulation type Spectrl Msk Intelsat Allows the user to set the spectral shape of Tx Data Filter Swp Bound 0 32 kHz Allows the user to set the acquisition ra...

Страница 61: ...Differential Decoder Having the decoder enabled ensures proper phase lock EF Mode is a special differential decoder mode that allows compatibility with certain modems when configured in QPSK modulati...

Страница 62: ...y of a Tx Circuit Identifier Circuits can be given up to an 11 Character alphanumeric identity such as LINK1 Tx Type G 703 V 35 RS 232 RS 422 Allows the user to select the Transmit Type Tx Clock SCTE...

Страница 63: ...er has finished editing the Tx Edit map it must be copied to the Tx Active map before it can be used by the modem Time Mark Enable Disable Allows the user to enable or disable the Time Mark Transfer T...

Страница 64: ...being used by the modem For a more detailed description of this function see Section 4 6 4 SATCh TS Allows the user to edit the Tx Edit Map to specify the terrestrial slots that will be dropped into...

Страница 65: ...mit Power The nominal Transmit Power is the setting that will be used when the remote modem indicates that its receiver has lost lock and commands a change to the setting indicated in the REMOTE CL AC...

Страница 66: ...te in 0 5 dB steps The resulting command rate is 1 command every minute to 1 command every five seconds Local CL Action HOLD NOMINAL MAXIMUM Allows the user to set the Transmit Power Setting to be use...

Страница 67: ...e the Transmit 2047 Pattern Test Mode of the remote modem Remote AUPC Monitor The REMOTE AUPC MONITOR Menu contains the remote monitor status for the AUPC Function Remote 2047 BER Reports the BER meas...

Страница 68: ...cated inside the modem Buffer Displays the status of the Doppler Buffer from 0 to 100 Press Clr to Center Buffer Causes Doppler Buffer to re center BER Exponent 6 9 Allows the user to set the time bas...

Страница 69: ...at the demod is unable to lock to a signal MfrSync Mask Pass Fail No Yes Indicates that the Framing Unit is unable to find the expected framing pattern FrmSync Mask Pass Fail No Yes Indicates that the...

Страница 70: ...ss Fail No Yes Indicates if the Circular Redundancy Check is passing in PCM30C and PCM31C Mode RS FIFO Pass Fail No Yes Indicates status of the Tx Reed Solomon FIFO FllBack Pass Fail No Yes Indicates...

Страница 71: ...Pass Fail No Yes CRC Lock Mask Pass Fail No Yes T1 Signaling Pass Fail No Yes Rx RS Faults menu Dec Lock Mask Pass Fail No Yes Indicates status of the Reed Solomon Decoder Lock Dintlvr Mask Pass Fail...

Страница 72: ...battery is low RAM ROM Pass Fail No Yes Indicates M C memory fault M C uProc Pass Fail No Yes Indicates M C Microprocessor hardware failure UIO Present Pass Fail No Yes Indicates absence of Universal...

Страница 73: ...ator is active Latched Alrm menu The following alarms are latched in order to catch intermittent failures Note Refer to Section 4 2 7 Active Alrms menu for an explanation of these Menu Options and Par...

Страница 74: ...ck Backward Alr menu Backward alarms are alarms that are fed back to or received from the other end of the satellite link In IBS Mode including Drop Insert Backward Alarm 1 is the only one used It wou...

Страница 75: ...date Time HH MM SS Allows the user to enter the current time Backlight menu Level High Low Allows the user to enter the backlight intensity level Timeout 00 99 Allows the user to enter the length of...

Страница 76: ...mote Port Baud Rate 4 3 9 Test Menu Options and Parameters 2047 Test None Tx Rx Tx Rx Allows the user to enable or disable the 2047 Pattern Test Tx enables the transmit pattern generator Rx enables th...

Страница 77: ...to the Tx data input to the Modem Card Tx RX BB Enables both Carrier CW Causes the Modulator to output a pure carrier Dual Causes a double sideband output Offset Causes a single sideband output Normal...

Страница 78: ...PSK 32 2048 96K 3 4 IDR V 35 IESS DISABLE DISABLE QPSK 64 6312 96K 3 4 IDR V 35 IESS DISABLE DISABLE QPSK 128 8448 96K 3 4 IDR V 35 IESS DISABLE DISABLE QPSK 24 56 1 1 2 CNT V 35 IESS DISABLE DISABLE...

Страница 79: ...IBS DISABLE DISABLE QPSK 52 1920 16 15 3 4 IBS IBS DISABLE DISABLE QPSK 69 6312 1 3 4 CNT V 35 IESS DISABLE DISABLE QPSK 70 8448 1 3 4 CNT V 35 IESS DISABLE DISABLE QPSK 73 3152 1 1 2 CNT V 35 IESS D...

Страница 80: ...36 16 15 3 4 IBS IBS DISABLE DISABLE QPSK 30 1088 16 15 1 2 IBS IBS DISABLE DISABLE QPSK 39 1088 16 15 3 4 IBS IBS DISABLE DISABLE QPSK 43 1152 16 15 1 2 IBS IBS DISABLE DISABLE QPSK 46 1152 16 15 3 4...

Страница 81: ...1 1 2 CNT V 35 IESS DISABLE DISABLE QPSK 141 3088 1 3 4 CNT V 35 IESS DISABLE DISABLE QPSK 176 4000 1 1 2 CNT V 35 IESS DISABLE DISABLE QPSK 116 4000 1 3 4 CNT V 35 IESS DISABLE DISABLE QPSK 60 1344 1...

Страница 82: ...e FEC 4 5 1 Operational Case Examples Note For best results always begin setup by setting the data rate to 512 Kbps This data rate is applicable for all modes and as such provides a convenient launch...

Страница 83: ...with the Data Rate 512 Kbps Modulator Method 1 Set Framing to 1 15 Set mode to IBS Under Mod Data menu Set code rate to 3 4 VIT Set data rate for 1544000 Under Interface Menu Set Interface type Set Tx...

Страница 84: ...Mod IF menu Set desired Tx frequency and power level Turn IF ON Method 2 Set Mod strap code to 101 Under Interface Menu Set Interface type Set Tx clock selection Under Mod IF menu Set desired Tx frequ...

Страница 85: ...ode such as T1 ESF with the mod data rate set to 1920000 bps a valid E1 D I rate but not a valid T1 rate will result in the error message INVALID DROP MODE and the selection will not be allowed Trying...

Страница 86: ...ot mappings in the following manner The selection of T1 D4 T1 ESF or SLC 96 type terrestrial framing format limits the terrestrial timeslots to values from 1 24 The selection of PCM 30 or PCM 30C type...

Страница 87: ...Frame Source selection should be made prior to attempting to change the Buffer Clock In most instances the Insert Terrestrial Frame Source selection will be set to External and the Buffer Clock will...

Страница 88: ...Under Interface Under RX Setup Set Rx Type according to your hardware configuration Set Buff Size to desired depth Under Rx D I Set Insert Mode T1 D4 Set T1 E1 Frm Src External Use SATCh TS edit capa...

Страница 89: ...to desired depth Under Rx D I Set Insert Mode T1 D4 Set T1 E1 Frm Src External Use SATCh TS edit capability to define proper mapping of Satellite Channels to insert Terrestrial Slots For Satellite Cha...

Страница 90: ...DMD15 DMD15L IBS IDR Satellite Modem User Interfaces TM051 Rev 5 8 4 39 Figure 4 4 Single Trunk Figure 4 5 Rx Only With Trunk Figure 4 6 Rx Only No Trunk...

Страница 91: ...the modem and remain unchanged after a power down Table 4 5 D I Multiplexer Map Locations Used Data Rate Kbps Map Locations Used n 1 2 4 8 16 24 30 64 1 128 1 2 256 1 4 384 1 6 512 1 8 768 1 12 1024 1...

Страница 92: ...the Rx Active Map Two additional maps exist the Tx Edit Map and the Rx Edit Map The Edit Maps are the buffer areas that are used when creating or modifying a map through the modem s LCD when editing...

Страница 93: ...from and or inserted into the first eight time slots of the T1 or E1 frame The Multiplexer would know to look only at the first eight entries in the Active map s and would ignore the other 22 entries...

Страница 94: ...y or data rate This type of input is followed by pressing the Enter or carriage return key An input can be aborted at any time by pressing the ESC key Invalid input keys cause an error message to be d...

Страница 95: ...usually reserved for the M C computer 4 9 1 2 Protocol Wrapper The Radyne COMMSPEC is byte oriented with the Least Significant Bit LSB issued first Each data byte is conveyed as mark space information...

Страница 96: ...to perform a specific function or series of functions Acknowledgment and error codes are returned in this field 1 Byte for the DMD5000 protocol and 2 Bytes for the DMD15 protocol DATA The Data field c...

Страница 97: ...luded in every message packet and increments sequentially When the M C computer or bus linked equipment initiates a message it assigns the FSN as a tag for error control and handshaking A different FS...

Страница 98: ...ted as valid The device that receives the valid message then exchanges the SOURCE ID with the DESTINATION ID sets the OPCODE to zero in order to indicate that a good message was received and returns t...

Страница 99: ...ROR 0x0414 MPARM_TERRLOOPBACK_ERROR 0x0415 MPARM_BASELOOPBACK_ERROR 0x0416 MPARM_CLOCKCONTROL_ERROR 0x0417 MPARM_CLOCKPOLARITY_ERROR 0x0418 MPARM_FRAMING_ERROR 0x0419 MPARM_DROPMODE_ERROR 0x041A MPARM...

Страница 100: ...ARM_AUPCREMOTEBBLOOPBACK_ERROR 0x043A MPARM_AUPCREMOTE2047_ERROR 0x043B MPARM_AUPCEBNO_ERROR 0x043C MPARM_AUPCMINPOWER_ERROR 0x043D MPARM_AUPCMAXPOWER_ERROR 0x043E MPARM_AUPCNOMINALPOWER_ERROR 0x043F...

Страница 101: ...BEREXPONENT_ERROR 0x0619 DPARM_CIRCUITID_ERROR 0x061A DPARM_TERRLOOPBACK_ERROR 0x061B DPARM_BASELOOPBACK_ERROR 0x061C DPARM_IFLOOPBACK_ERROR 0x061D DPARM_INTERFACETYPE_ERROR 0x061E DPARM_INTERFACENOTP...

Страница 102: ...el both will attempt to respond to the M C computer when the computer generates a multi drop override ID of 22 If their actual setup parameters status or internal timing differs they will both attempt...

Страница 103: ...M N Switch 10 DMD15 Modulator 20 DMD15 Demodulator 21 DMD15 Modem 22 DVB3000 3030 Video Modulator DM240 23 RCS20 M N Switch 24 RCS10 M N Switch 25 RCS11 1 1 Switch 26 Reserved for future equipment ty...

Страница 104: ...pment with different revision software they may respond with two different sized packets The remote M C MUST make use of the non volatile count value to index to the start of the Volatile Section If t...

Страница 105: ...hronization the IOPT keeps track of error laden packets and packets intended for other equipment for the duration of each received packet Once the packet is complete the IOPT invokes an I 0 wait state...

Страница 106: ...e the message is to be sent 1 byte FSN Frame sequence number ensures correct packet acknowledgment and data transfers 1 byte OPCODE This byte identifies the message type associated with the informatio...

Страница 107: ...Modem Drop Insert Map 2402h Query Modems Identification 2403h Query Modem Control Mode 2404h Query Modulator Latched Alarms 2405h Query Demodulator Latched Alarms 2406h Query Modem Latched Alarms 240...

Страница 108: ...Command Modulator SCT Source 260Dh Command Modulator Drop Mode 260Eh Command Modulator Output Level 260Fh Command Modulator Reed Solomon 2610h Command Modulator Spectrum 2611h Command Modulator Operat...

Страница 109: ...Transfer 2638h Command Demodulator Configuration 2A00h Command Demodulator Frequency 2A01h Command Demodulator Data Rate 2A02h Command Demodulator Strap Code 2A03h Command Demodulator Sweep Boundary 2...

Страница 110: ...al EXC Source 2A23h Clear Latched Alarm 1 2A24h Clear Latched Alarm 2 2A25h Clear Latched Alarm 3 2A26h Clear Latched Alarm 4 2A2Eh Command Demod Reacquisition Sweep 2A2Fh Command Demod N K Codes 2A32...

Страница 111: ...256 kHz to 10 MHz In 8 kHz increments 0 Internal 1 External 2 High stability 0 QPSK 1 BPSK 2 8PSK 3 16QAM 4 OQPSK 0 None 1 Viterbi 1 2 Rate 2 Viterbi 2 3 Rate 3 Viterbi 3 4 Rate 4 Viterbi 5 6 Rate 5 V...

Страница 112: ...equal 0 for all channels 1 Frame 12 s bits equal 1 0 None or else a 1 in the following bits means force Bit 0 Backward Alarm 1 IDR and IBS Bit 1 Backward Alarm 2 IDR only Bit 2 Backward Alarm 3 IDR on...

Страница 113: ...pares 0 Mask 1 Allow 11 ASCII characters 20 to 10 10 dBm to 20 dBm two s compliment 20 to 10 10 dBm to 20 dBm two s compliment 0 G703 B T1 AMI 1 G703 B T1_B8ZS 2 G703 B E1 3 G703 B T2 4 G703 U E1 5 G7...

Страница 114: ...nable 2 FM Only 0 Off 1 On 0 Off 1 On 0 Off 1 On 0 Hold 1 Nominal 2 Maximum 0 Hold 1 Nominal 2 Maximum 0 0 5 dB Min 1 1 0 dB Min 2 1 5 dB Min 3 2 0 dB Min 4 2 5 dB Min 5 3 0 dB Min 6 3 5 dB Min 7 4 0...

Страница 115: ...and 7 Spares Bit 0 12V alarm 1 Fail Bit 1 12V alarm 1 Fail Bit 2 5V alarm 1 Fail Bit 3 Reserved Bit 4 Battery 1 Fail Bit 5 RAM and ROM alarm flag 1 Fail Bits 6 and 7 Spares Bit 0 M C processor fault...

Страница 116: ...ex 49 4 9 V 12V Implied decimal point ex 121 12 1 V 12V Implied decimal point and minus sign ex 118 11 8 V Degrees C Implied decimal point ex 490 49 0 C Not Implemented 0 Internal 1 External Bit 0 Ba...

Страница 117: ...ctivity Bit 3 Tx data activity detect 1 Activity Bit 4 Terrestrial AIS Tx data AIS detect 1 AIS Fail Bit 5 Tx clock fallback 1 Fail Bits 6 and 7 Spares Bit 0 12V alarm 1 Fail Bit 1 12V alarm 1 Fail Bi...

Страница 118: ...ved 1 Received Bit 7 CRC calculation error 1 Fail 0 Offline 1 Online 5V Implied decimal point ex 49 4 9 V 12V Implied decimal point ex 121 12 1 V 12V Implied decimal point and minus sign ex 118 11 8 V...

Страница 119: ...l Bit 1 12V alarm 1 Fail Bit 2 5V alarm 1 Fail Bit 3 Reserved Bit 4 Battery 1 Fail Bit 5 RAM and ROM alarm flag 1 Fail Bits 6 and 7 Spares Bit 0 M C processor fault 1 Fail Bit 1 U IO card present Faul...

Страница 120: ...E1 CRC enabled 1 Fail Bit 3 T1 yellow alarm received 1 Received Bit 4 E1 FAS alarm received 1 Received Bit 5 E1 MFAS alarm received Not valid in FAS mode 1 Received Bit 6 E1 CRC alarm received 1 Rece...

Страница 121: ...ential 3 4 Rate 10 Sequential 5 6 Rate 11 Sequential 7 8 Rate 12 Sequential 8 9 Rate 13 Trellis 1 2 Rate 14 Trellis 2 3 Rate 15 Trellis 3 4 Rate 16 Trellis 5 6 Rate 17 Trellis 7 8 Rate 18 Trellis 8 9...

Страница 122: ...Bit 0 Transmit processor Fault Bit 1 Transmit output power level Fault Bit 2 Transmit Oversample PLL lock Bit 3 Composite clock PLL lock Bit 4 IF synthesizer lock Bit 5 IDR 96 PLL lock Bit 6 RS FIFO...

Страница 123: ...32 0 Disabled 1 Enabled 0 Disabled 1 Enabled Bit 0 Frame lock mask Bit 1 Multiframe lock mask Valid in E1 PCM30 and PCM30C Bit 2 CRC lock mask Valid in T1ESF and E1 CRC enabled Bit 3 T1 yellow alarm r...

Страница 124: ...Singed value 50 to 200 with implied decimal point 49 4 9 dBm two s compliment 0 Disable 1 Enable Unsigned Binary 4 to 16 Inclusively Reserved Reserved 0 Disable 1 Enable Opcode 2602h Command a modula...

Страница 125: ...tion for compatibility Opcode 2609h Command a modulator s carrier control 1 Carrier Control 0 Off 1 On Opcode 260Ah Command a modulator s carrier selection 1 Carrier Selection 0 Normal 1 CW 2 Dual 3 O...

Страница 126: ...1 Mode 0 Closed Net 1 IDR 2 IBS 3 D I Opcode 261Ah Command a modem s external EXC clock 4 External EXC Clock Binary value 1 Hz steps 256 kHz to 10 MHz In 8 kHz increments Opcode 261Bh Command a modem...

Страница 127: ...AUPC Eb No 2 AUPC Target Eb No Target Eb No at Receiver Opcode 2631h Command AUPC Minimum Power 2 AUPC Minimum Power Singed value 50 to 200 with implied decimal point 49 4 9 dBm two s compliment Opcod...

Страница 128: ...on Interleaver Depth Opcode 2638h Command a modulator s Time Mark Transfer 1 1 Time Mark Transfer Enable Time Mark Transfer Pattern Length 0 Disable 1 Enable Unsigned Binary 4 to 16 Inclusively 4 9 5...

Страница 129: ...e 17 Trellis 7 8 Rate 18 Trellis 8 9 Rate 19 SEQ 3 4 Rate 20 TPC 793 2D 21 TPC 495 3D 22 TPC 325 3D 0 Disable 1 Enable 0 Off 1 On 2 EF Mode Available in uncoded QPSK modulation for compatibility 0 Dis...

Страница 130: ...7 test pattern lock Bit 6 External reference PLL lock Bit 7 IDR 96K PLL Lock 0 Mask 1 Allow Bit 0 Buffer clock activity detect Bit 1 External BNC activity detect reserved in RCS10 10L mode Bit 2 Rx sa...

Страница 131: ...1 3 G703 B T2 4 G703 U E1 5 G703 U T2 6 G703 U E2 7 RS 422 8 V 35 9 RS 232 Bit 0 Frame lock Bit 1 Multiframe lock Valid in E1 PCM30 and PCM30C Bit 2 CRC lock Valid in T1ESF and E1 CRC enabled Bit 3 T1...

Страница 132: ...eive processor fault 1 Fail Bit 1 Carrier Loss 0 pass 1 Fail Bit 2 Multiframe Sync Loss 0 pass 1 Fail Bit 3 Frame Sync Loss 0 pass 1 Fail Bit 4 IBS BER Alarm 0 pass 1 Fail Bit 5 Satellite AIS 0 pass 1...

Страница 133: ...t 1 U IO card present 1 Present reserved in RCS10 10L mode Bit 2 IF card present 1 Present Bits 3 7 Spares Bit 0 Receive processor fault Alarm 1 Fail Bit 1 Carrier Loss 1 Fail Bit 2 Multiframe Sync Lo...

Страница 134: ...S Bit 1 Backward Alarm 2 IDR only Bit 2 Backward Alarm 3 IDR only Bit 3 Backward Alarm 4 IDR only Bits 4 7 Reserved 0 No 1 Yes Binary value Binary value Bytes 1 2 Binary value Raw BER 896 8 96 Bytes 1...

Страница 135: ...tivity detect Not Latched reserved in RCS10 10L mode Bit 2 Rx satellite clock activity detect 1 Fail Bit 3 Insert clock activity detect 1 Fail Bit 4 External reference PLL activity Not Latched reserve...

Страница 136: ...ctivity detect 1 Activity Bit 3 Insert clock activity detect 1 Activity Bit 4 External reference PLL activity 1 Activity reserved in RCS10 10L mode Bit 5 High Stability reference PLL activity 1 Activi...

Страница 137: ...Not Latched Bit 5 Rx 2047 test pattern lock Not Latched Bit 6 External reference PLL lock Not Latched Bit 7 IDR 96 PLL Lock 1 Fail Bit 0 12V alarm 1 Fail Bit 1 12V alarm 1 Fail Bit 2 5V alarm 1 Fail B...

Страница 138: ...t 1 Multiframe lock fault Valid in E1 PCM30 and PCM30C 1 Fail Bit 2 CRC lock fault Valid in T1ESF and E1 CRC enabled 1 Fail Bit 3 T1 yellow alarm received 1 Received Bit 4 E1 FAS alarm received 1 Rece...

Страница 139: ...l Bit 5 RS De Interleaver Fault 1 Fail Bit 6 RS Decoder Uncorrectable Word 1 Fail Bit 7 Summary Fault 1 Fail Bit 0 IF synthesizer lock detect Fault 1 Fail Bit 1 Rx Oversample PLL lock detect 1 Fail Bi...

Страница 140: ...RS De Interleaver Fault 1 Fail Bit 6 RS Decoder Uncorrectable Word 1 Fail Bit 7 Summary Fault 1 Fail Bit 0 IF synthesizer lock detect 1 Lock Bit 1 Rx Oversample PLL lock detect 1 Lock Bit 2 Buffer cl...

Страница 141: ...ial Decoder Descrambler Control 0 Closed Net 1 IDR 2 IBS 3 D I Selects the IF frequency in Hz The range is 50 MHz to 180 MHz for the 70 140 MHz type modems and 950 MHz to 1750 MHz for the L Band Modem...

Страница 142: ...3 PCM 30 4 PCM 30C 5 PCM 31 6 PCM 31C 7 SLC 96 8 T1 D4 S 9 T1 ESF S 0 Internal 1 External Timeslots to insert organized by satellite channel 0 No framing 1 96K 2 1 15 3 EF AUPC 1 15 0 Stop 1 2047 test...

Страница 143: ...ct Bit 3 Insert clock activity detect Bit 4 External reference PLL activity reserved in RCS10 10L mode Bit 5 High Stability reference PLL activity reserved in RCS10 10L mode Bit 6 Rx clock fallback Bi...

Страница 144: ...arm received Bit 5 E1 MFAS alarm received Not valid in FAS mode Bit 6 E1 CRC alarm received Bit 7 CRC calculation error 0 Mask 1 Allow 2 255 Reed Solomon code word length 1 254 Reed Solomon message le...

Страница 145: ...rbi 2 3 Rate 3 Viterbi 3 4 Rate 4 Viterbi 5 6 Rate 5 Viterbi 7 8 Rate 6 Viterbi 8 9 Rate 7 Sequential 1 2 Rate 8 Sequential 2 3 Rate 9 Sequential 3 4 Rate 10 Sequential 5 6 Rate 11 Sequential 7 8 Rate...

Страница 146: ...Command a demodulator s operating mode 1 Operating Mode 0 Stop 1 2047 test Opcode 2A18h Command map summary to backward alarm 1 Map Summary To Backward Alarm 0 None 1 BK1 2 BK2 3 BK1 2 4 BK3 5 BK1 3 6...

Страница 147: ...e 2A2Fh Command a demodulator s reacquisition sweep 2 Reacquisition Sweep Unsigned Binary 0 32000 Opcode 2A32h Command a demodulator s Reed Solomon N K Codes Interleaver Depth 1 1 1 Rx Reed Solomon N...

Страница 148: ...il Bit 2 Buffer under 10 1 Fail Bit 3 Buffer over 90 1 Fail Bit 4 RS Decoder Lock Fault 1 Fail Bit 5 RS De Interleaver Fault 1 Fail Bit 6 RS Decoder Uncorrectable Word 1 Fail Bit 7 Summary Fault 1 Fai...

Страница 149: ...fault 1 Fail Bit 1 Transmit output power level 1 Fail Bit 2 Transmit Oversample PLL lock 1 Lock Bit 3 Composite clock PLL lock 1 Lock Bit 4 IF synthesizer lock 1 Lock Bit 5 IDR 96 PLL lock 1 Lock Bit...

Страница 150: ...l reference PLL lock 1 Lock Bit 7 IDR 96K PLL Lock 1 Lock Bit 0 Buffer clock activity detect 1 Activity Bit 1 External BNC activity detect 1 Activity reserved in RCS10 10L mode Bit 2 Rx satellite cloc...

Страница 151: ...R Binary value 1 decimal point implied 700 7 00 Byte 3 Binary value exponent Byte 3 Binary value exponent Bit 0 Raw BER and corrected BER status 1 Valid Bit 1 Test 2047 BER status 1 Valid Bits 2 3 EbN...

Страница 152: ...ve map 2 Drop edit map 3 Insert edit map 4 11 User map 1 through 8 12 19 ROM maps 1 8 Opcode 2C00h Command drop and insert map copy 1 1 From Map To Map 0 Drop active map 1 Insert active map 2 Drop edi...

Страница 153: ...l Emulation 0 Adds Viewpoint 1 VT100 2 WYSE50 Opcode 2C0Ch Command Modem Baud Rate 1 Terminal Baud Rate 0 300 1 600 2 1200 3 2400 4 4800 5 9600 6 19200 7 38400 8 150 Opcode 2C0Dh Command Configuration...

Страница 154: ...beled connectors located on the rear of the unit refer to Figures 5 1 through 5 5 The connector definitions below are those on the DMD15 DMD15L unit Any connection interfacing to the DMD15 DMD15L must...

Страница 155: ...Module AC Input Module Figure 5 1 power is applied to the port with the supplied power cable is 10 240 VAC 50 60 Hz Integrated into the Power Input Module is the Power On Off Rocker Switch Power consu...

Страница 156: ...75 Ohm Female BNC Connector The power level is programmable from 20 to 5 dBm in 0 1 dBm steps The IF Frequency can be programmed to 50 90 MHz or 100 180 MHz in 1 Hz steps If an L Band IF is ordered t...

Страница 157: ...ta In EXC IDI B Input 5 10 SYNC DATA J8 The Synchronous Data Interface Port is a 37 Pin Female D Connector Refer to Table 5 2 for pinouts Table 5 2 Synchronous Data Port RS 422 RS 485 RS 232 V 35 37 P...

Страница 158: ...Receive Octet A RX 0 A Output 34 Receive Octet B RX 0 B Output 17 Terminal Timing A TT A Input 35 Terminal Timing B TT B Input 1 19 20 37 Signal Ground GND 5 11 ASYNC J9 The Asynchronous Data Interfac...

Страница 159: ...o Direction 5 Demod Fault NC DF NC No Direction 6 Demod Fault NO DF NO No Direction 7 Common Equipment Fault C CEF C No Direction 8 Common Equipment Fault NC CEF NC No Direction 9 Common Equipment Fau...

Страница 160: ...on 3 Transmit Data TxD Output 2 Receive Data RxD Input 5 Ground GND 7 Request to Send RTS Input 8 Clear to Send CTS Input 5 14 REMOTE J13 The Remote Port is a RS 485 Connection for remote monitor and...

Страница 161: ...r J15 Pin No Signal Name Signal Direction 1 Receive Octet B ESCRXO B Output 2 Receive Clock B ESCRXC B Output 3 Receive Data B ESCRXD B Output 4 No Connection NC 5 No Connection NC 6 Transmit Data A E...

Страница 162: ...put Rx Data 64K B Output 8 ESCAUDTX 2A Tx Audio 2A Input Tx Clock 64K A Output 9 ESCAUDRX 2A Rx Audio 2A Output Rx Clock 64K A Output 5 17 ESC ALARMS J17 The ESC Alarms Port is a 25 Pin Female D Conne...

Страница 163: ...G 703B SD A Input 2 Synchronous Data Send Data Input A SYNC SD A Input 3 IDR ESC Backward Alarm Out 1 Common ESCBWO 1C 4 G 703 Insert Data Input A G 703B IDI A Input 5 Synchronous Data Send Timing Ou...

Страница 164: ...t 8 Kbps Output Data ESCTXD A Input 26 IDR ESC Receive 8 Kbps Output Clock ESCRXC A Output 27 IDR ESC Receive 8 Kbps Output Data ESCRXD A Output 28 IDR ESC Backward Alarm Output 4 Normally Closed ESCB...

Страница 165: ...ESC Audio Input Channel 2B ESCAUDTX 2B Input 51 IDR ESC Audio Output Channel 1B ESCAUDRX 1B Output 52 IDR ESC Audio Output Channel 2B ESCAUDRX 2B Output 53 IDR ESC Backward Alarm Input 4 ESCBWI 4 54...

Страница 166: ...8 5 13 64 Synchronous Data Data Mode Out B SYNC DM B Output 65 Synchronous Data Clear to Send B SYNC CS B Input 66 IBS Receive Octet Output B RXO B Output 67 Synchronous Data Request to Send B SYNC R...

Страница 167: ...User Interfaces DMD15 DMD15L IBS IDR Satellite Modem 5 14 TM051 Rev 5 8...

Страница 168: ...that the LNA is turned on If a spectrum analyzer is available locate and measure the receive level which should not be below 65 dBm absolute 50 dBm is nominal Possible Cause Receive carrier frequency...

Страница 169: ...ed into Transmit alarms and Receive alarms Transmit and Receive are completely independent 6 2 2 2 Minor Alarms Minor alarms indicate that a problem may persist outside the modem such as loss of Terre...

Страница 170: ...DMD15 DMD15L DMD15 DMD15LL DMD15 DMD15LIBS IDR Satellite Modem Maintenance TM051 Rev 5 8 6 3 Table 6 1 DMD15 DMD15L Interface Common Equipment Fault Matrix Table 6 2 DMD15 DMD15L RX Fault Matrix...

Страница 171: ...identify The top horizontal column indicates the various actions that the modem will undertake These actions may be in the form of a relay a switch or an LED 6 3 2 IBS Fault Conditions and Actions Fi...

Страница 172: ...rompt Service Alarm AS1 IBS Prompt Alarm AS1 IBS Prompt Alarm AS1 IBS Prompt Alarm AS1 IBS Prompt Alarm Action to Terrestrial Across Interface H AH2 1 in Bit 3 of NFAS TSO Yellow Alarm AH2 1 in Bit 3...

Страница 173: ...ellite Input FA5 Alarm Indication Received From Satellite Input AS1 2 IBS Prompt Service Alarm AS1 2 IBS Prompt Service Alarm AS1 2 IBS Prompt Service Alarm AS2 IBS Service Alarm AH1 3 AIS in TS s 111...

Страница 174: ...CITT V 35 or IBS others optional FEC Viterbi K 7 at 1 2 3 4 and 7 8 Rate Sequential 1 2 3 4 7 8 optional Trellis 2 3 optional Turbo Product Code optional Rate 3 4 0 793 64 57 x 64 57 Rate 1 2 0 495 32...

Страница 175: ...Transmit External Rx Recovered or SCT Internal 7 3 Monitor and Control Transmit and Receive Frequencies Transmit and Receive Data Rates and Code Rate Differential Encoding On Off Scrambler On Off Spec...

Страница 176: ...ced and 120 Ohm balanced HDB3 G 703 T2 DSX2 6 312 Mbps 75 Ohm unbalanced and 110 Ohm balanced B8ZS and B6ZS G 703 E2 8 448 Mbps 75 Ohm BNC unbalanced HDB3 ITU V 35 Differential Clock and Data only RS...

Страница 177: ...K 3 4 9450 9750000 19042 9750000 QPSK 7 8 11025 10000000 22216 10000000 QPSK 495 6226 6423976 12546 6423976 QPSK 793 9975 10000000 20100 10000000 OQPSK NONE 12600 10000000 25390 10000000 OQPSK 1 2 630...

Страница 178: ...dB 8 6 dB 5 2 dB 6 3 dB 6 6 dB 7 9 dB 10 7 6 6 dB 8 2 dB 9 3 dB 5 9 dB 6 9 dB 7 3 dB 8 6 dB 10 8 7 1 dB 8 7 dB 10 2 dB 6 4 dB 7 5 dB 7 8 dB 9 4 dB 8PSK Trellis Decoder 8PSK BER Specification Typical...

Страница 179: ...1 2 FEC Rate 3 4 FEC 10 6 4 1 5 6 10 7 4 2 5 8 10 8 4 4 6 0 10 10 5 0 6 3 16 QAM BER Performance Viterbi Decoder Specification Typical BER 1 2 Rate 3 4 Rate 7 8 Rate 1 2 Rate 3 4 Rate 7 8 Rate 10 3 n...

Страница 180: ...5 DMD15LL DMD15 DMD15LIBS IDR Satellite Modem Technical Specifications TM051 Rev 5 8 7 7 10 6 n a 9 1 dB 10 5 dB n a 8 6 dB 0 2 dB 10 7 n a 9 3 dB 10 8 dB n a 8 8 dB 10 4 dB 10 8 n a 9 5 dB 11 0 dB n...

Страница 181: ...Technical Specifications DMD15 DMD15L DMD15 DMD15LL DMD15 DMD15LIBS IDR Satellite Modem 7 8 TM051 Rev 5 8...

Страница 182: ...DMD15 DMD15L DMD15 DMD15LL DMD15 DMD15LIBS IDR Satellite Modem Technical Specifications TM051 Rev 5 8 7 9...

Страница 183: ...Technical Specifications DMD15 DMD15L DMD15 DMD15LL DMD15 DMD15LIBS IDR Satellite Modem 7 10 TM051 Rev 5 8...

Страница 184: ...4 5 6 8 4 6 7 9 5 6 7 8 10 5 7 8 9 11 6 8 9 10 12 6 8 9 10 11 13 7 9 10 11 12 14 7 10 11 12 13 15 8 10 12 13 14 16 8 11 12 13 14 15 17 9 12 13 14 15 16 18 9 12 14 15 16 17 19 10 13 15 16 17 18 20 10 1...

Страница 185: ...39 20 26 30 32 33 34 35 36 37 38 40 20 27 30 32 34 35 36 37 38 39 41 21 28 31 33 35 36 37 38 39 40 42 28 32 34 35 36 37 38 39 40 41 43 29 33 35 36 37 38 39 40 41 42 44 30 33 36 37 38 39 40 41 42 43 4...

Страница 186: ...61 62 63 64 65 66 67 69 52 56 58 60 61 62 63 64 65 66 67 68 70 53 56 59 60 62 63 64 65 66 67 68 69 71 54 57 60 61 63 64 65 66 67 68 69 70 72 54 58 60 62 63 64 65 66 67 68 69 70 71 73 55 59 61 63 64 65...

Страница 187: ...80 83 85 87 88 90 91 92 93 94 95 96 97 98 100 80 84 86 88 89 90 91 92 93 94 95 96 97 98 99 101 81 85 87 89 90 91 92 93 94 95 96 97 98 99 100 102 82 85 88 90 91 92 93 94 95 96 97 98 99 100 101 103 83...

Страница 188: ...119 120 121 122 123 124 125 126 128 110 112 114 116 117 118 119 120 121 122 123 124 125 126 127 129 111 113 115 117 118 119 120 121 122 123 124 125 126 127 128 130 112 114 116 117 119 120 121 122 123...

Страница 189: ...151 152 153 154 155 157 138 140 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 158 139 141 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 159 140 142 144 145 146 147 148 149...

Страница 190: ...78 179 180 181 182 183 184 186 166 168 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 187 167 169 170 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 188 168 170 171 173 1...

Страница 191: ...07 208 209 210 211 212 214 195 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 215 196 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 216 197 198 200 201 202 2...

Страница 192: ...25 226 227 228 229 230 231 232 233 234 235 236 237 239 220 221 222 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 240 220 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 2...

Страница 193: ...48 249 250 252 233 234 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 253 234 235 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 254 235 236 238 239 240 241 242 243 2...

Страница 194: ...DMD15 DMD15L DMD15 DMD15LL DMD15 DMD15LIBS IDR Satellite Modem Glossary TM051 Rev 5 8 5 11...

Страница 195: ......

Страница 196: ...ASIC Application Specific Integrated Circuit ATE Automatic Test Equipment B BER Bit Error Rate BERT Bit Error Rate Test Bit BIT Binary Digit or Built In Test BITE Built In Test Equipment bps Bits Per...

Страница 197: ...roadcast D I Drop and Insert E Eb N0 Ratio of Energy per bit to Noise Power Density in a 1 Hz Bandwidth EEPROM Electrically Erasable Programmable Read Only Memory EIA Electronic Industries Association...

Страница 198: ...Input Output IEEE International Electrical and Electronic Engineers IESS INTELSAT Earth Station Standards IF Intermediate Frequency INTELSAT International Telecommunication Satellite Organization ISO...

Страница 199: ...e Mod Modulator or Modulated ms Millisecond M C Monitor and Control N NC Normally Closed NO Normally Open ns Nanoseconds NVRAM Non Volatile Random Access Memory N C No Connection or Not Connected O OQ...

Страница 200: ...es are block based error correcting codes with a wide range of applications in digital communications and storage S SEQ Sequential SYNC Synchronize T TBD To Be Designed or To Be Determined TM Technica...

Страница 201: ...Glossary DMD15 DMD15L DMD15 DMD15LL DMD15 DMD15LIBS IDR Satellite Modem G 6 TM051 Rev 5 8 W X Y Z W Watt Misc s Microsecond Ohms 16QAM 16 Quadrature Amplitude Modulation 8PSK 8 Phase Shift Keying...

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