User Manual DDS200 Digital Demodulation System 070-9952-00

More documents

Recommendations

Info

Manual OperationPrinting of alarm messages with LINE... is performed in a similar way. Contraryto the printout selected with LAST LINES..., any group of lines in the alarmregister can be printed. The DDS200 asks for the start- and end-line numbers,which can be entered separately. Entries are made in the same way as describedfor the printout selected with LAST LINES... . When the PRINT key is pressed,the alarm messages associated with the selected line numbers are printed. If thestart-line number is higher than the stop-line number, an error message is output.An exception is if there are exactly 1000 entries in the alarm register, printing canbe continued beyond line 000.Example:START LINE = 995STOP LINE = 005PRINT: ⇒11 lines from 995 to 005 are printedA started printing procedure can be aborted with the ABORT key.Clearing the Register. The alarm register of the DDS200 is automatically clearedwhen one of the following conditions occurs:The supply voltage is switched on.The RF is changed.Another input or input filter (SAW filter) is selected.A new QAM order or symbol rate is selected.The equalizer setting or the loop bandwidth is changed.MPEG data outputs are newly configured.The constellation diagram or the parameter calculation is activated.The external BER measurement is disabled.The PRESET key is pressed.The register can also be manually cleared. This is done by pressing first theALARM function key and then the REG. CLR... (Register Clear) soft key. Theinstruments queries whether the register should really be cleared. When YES ispressed, the register is cleared completely and date and time of the clearing areentered in line 0 of the register. The register is now ready for entering new alarmmessages.DDS200 Digital Demodulation System User Manual 2–45
Manual OperationMEASURE MenuThe DDS200 has a measurement menu in which all main parameters aredisplayed. To activate this menu, press the MEASURE key in the MAINFUNCTION block. The menu shown in Figure 2–37 is displayed,Figure 2–37: MEASURE menuThe LEVEL and BER parameters are shown In the upper section of the display.These values are continually updated. The level unit is configured in the SETUP:LEVEL UNITS menu and automatically converted.If applicable, the following messages are displayed:FRAME UNSYNCSYMBOL RATE UNSYNCCARRIER RECOVERY UNSYNCI/Q INTERCHANGEDEQUALIZER UNLOCKED / OFF / FREEZEIf none of the messages is displayed, the corresponding synchronizations are inorder.2–46 DDS200 Digital Demodulation System User Manual
Page 1 and 2:
®Established 1981Advanced Test Equ
Page 3 and 4:
Copyright Tektronix, Inc. All righ
Page 7 and 8:
Table of ContentsRemote ControlHard
Page 9 and 10:
Table of ContentsIndexLocal control
Page 11 and 12:
Table of ContentsFigure 2-35: ALARM
Page 13 and 14:
Table of ContentsList of TablesTabl
Page 15 and 16:
Table of ContentsxDDS200 Digital De
Page 17 and 18:
General Safety SummaryProvide Prope
Page 19:
PrefacexivDDS200 Digital Demodulati
Page 22 and 23:
Preparation for UseFront PanelFront
Page 24 and 25:
Preparation for UseTable 1-1: Legen
Page 26 and 27:
Preparation for UseTable 1-2: Legen
Page 28 and 29:
Preparation for UseUnpacking the Un
Page 30 and 31:
Preparation for UsePositioning the
Page 32 and 33:
Preparation for UsePowering OnConne
Page 34 and 35: Preparation for UseInitial update -
Page 36 and 37: Preparation for UseInstalling Optio
Page 38: Preparation for Use1-18 DDS200 Digi
Page 41 and 42: Manual OperationSample SettingThis
Page 43 and 44: Manual OperationFigure 2-3: MODE me
Page 45 and 46: Manual OperationPress the RECEIVER
Page 47 and 48: Manual OperationBasic OperationThe
Page 49 and 50: Manual OperationFigure 2-7: MEASURE
Page 51 and 52: Manual OperationSoft KeysThe soft k
Page 53 and 54: Manual OperationNumeric KeypadSelec
Page 55 and 56: Manual OperationPresetting the Unit
Page 57 and 58: Manual OperationFigure 2-14: RECALL
Page 59 and 60: Manual OperationThe display mode do
Page 61 and 62: Manual OperationFigure 2-18: SETUP:
Page 63 and 64: Manual OperationThe type of printer
Page 65 and 66: Manual OperationOperation as Demodu
Page 67 and 68: Manual OperationFigure 2-24: INPUT:
Page 69 and 70: Manual OperationFigure 2-26: STO: E
Page 71 and 72: Manual Operation84QAM16QAM32QAM64QA
Page 73 and 74: Manual OperationSPECIAL FUNCTION Me
Page 75 and 76: Manual OperationA wide loop bandwid
Page 77 and 78: Manual OperationALARM MenuThis subs
Page 79 and 80: Manual OperationPressing the ALARM
Page 81 and 82: Manual OperationFigure 2-34: ALARM:
Page 83: Manual OperationThe alarm register
Page 87 and 88: Manual OperationFor further informa
Page 89 and 90: Manual OperationConstellation Diagr
Page 91 and 92: Manual OperationFigure 2-42 shows a
Page 93 and 94: Manual OperationQAM Parameters. Whe
Page 95 and 96: Manual OperationNOTE. For reading o
Page 97 and 98: Manual OperationPreset Values and M
Page 99 and 100: Manual OperationTable 2-4: DDS200 P
Page 101 and 102: Manual OperationExamples of Applica
Page 103 and 104: Manual OperationFigure 2-48: Conste
Page 105 and 106: Manual OperationThe magnitude of th
Page 107 and 108: Manual OperationFigure 2-53: Conste
Page 109 and 110: Manual OperationFrequency of occurr
Page 111 and 112: Manual OperationFrom the standard d
Page 113 and 114: Manual OperationTable 2-5: Theoreti
Page 115 and 116: Manual OperationThe term “modulat
Page 117 and 118: Manual OperationAmplitude N = 2 4 -
Page 119 and 120: Manual OperationBER Measurement wit
Page 121 and 122: Manual Operationare taken into acco
Page 123 and 124: Manual OperationIt should be noted
Page 125 and 126: Manual OperationThe key characteris
Page 127: Manual OperationThe key characteris
Page 130 and 131: Remote Control
Page 132 and 133: Remote ControlIEC/IEEE-Bus Messages
Page 134 and 135:
Remote ControlCommon commands. Comm
Page 136 and 137:
Remote ControlNumeric suffix:If an
Page 138 and 139:
Remote ControlExample: Special n
Page 140 and 141:
Remote ControlParameter:In the para
Page 142 and 143:
Remote Control*CLS*ESE 0 to 255*ESR
Page 144 and 145:
Remote ControlInstrument Model and
Page 146 and 147:
Remote ControlOutput UnitThe output
Page 148 and 149:
Remote ControlCONDition register. T
Page 150 and 151:
Remote ControlOverview of StatusReg
Page 152 and 153:
Remote ControlTable 3-2: Definition
Page 154 and 155:
Remote ControlTable 3-5: Definition
Page 156:
Remote ControlResetting the StatusR
Page 159 and 160:
Maintenance and TroubleshootingRepl
Page 161:
Maintenance and TroubleshootingTabl
Page 164 and 165:
Appendix A: SpecificationsTable A-1
Page 166 and 167:
Appendix A: SpecificationsTable A-2
Page 168 and 169:
Appendix A: SpecificationsA-6 DDS20
Page 170 and 171:
Appendix B: IEC/IEEE-Bus InterfaceS
Page 172 and 173:
Appendix B: IEC/IEEE-Bus InterfaceT
Page 174 and 175:
Appendix C: List of Error MessagesT
Page 176 and 177:
Page 178 and 179:
Page 180 and 181:
Appendix C: List of Error MessagesD
Page 182 and 183:
Appendix D: List of CommandsSTATus
Page 184 and 185:
Appendix D: List of CommandsSYSTem
Page 186 and 187:
Appendix D: List of CommandsINPut S
Page 188 and 189:
Appendix D: List of CommandsTable D
Page 190 and 191:
Page 192 and 193:
Appendix D: List of CommandsREAD Su
Page 194 and 195:
Page 196 and 197:
Page 198 and 199:
Page 200 and 201:
Appendix D: List of CommandsD-20 DD
Page 202 and 203:
Appendix E: Programming ExamplesSen
Page 204 and 205:
Appendix E: Programming ExamplesSer
Page 206 and 207:
Appendix E: Programming Examples
Page 208 and 209:
Appendix F: Remote Control via RS-2
Page 210 and 211:
Page 212 and 213:
Page 214:
Page 217 and 218:
IndexHHandshake, RS232, F-5Hard key
Page 219:
IndexSetting device address, 3-2Set
show all

User Manual DDS200 Digital Demodulation System 070-9952-00

Create successful ePaper yourself

Delete template?

Save as template?