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REMOTE OPERATION

5-34

Coupling event registers

These are device-dependent registers and the bits have meanings as shown in the list at the bottom
of the page. Each source (A and B) has its own set of registers, from which its respective coupling
event register summary bits are jointly summarized in the Status Byte.

# Positive transition sets status .
d0

rf level restricted by requested AM depth

d8 not

used

d1 not

used

d9 not

used

d2 not

used

d10

carrier limited by coupling

d3

am2 depth restricted by requested am1 depth

d11

offset limited by harmonic

d4

fm2 deviation restricted by requested fm1 deviation

d12

offset limited by sub-harmonic

d5

pm2 deviation restricted by requested pm1 deviation

d13

harmonic limited by offset

d6

number of sweep steps restricted by other parameters

d14

sub-harmonic limited by offset

d7 not

used

d15 not

used

<csbA>,<csbB>

coupling event register summary bits for each source (A and B)

<csb>

coupling event register summary bit (summarizes both sources).

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Содержание 2026Q

Страница 1: ...CDMA INTERFERER MULTISOURCE GENERATOR 2026Q Operating Manual Document part no 46892 361 Issue 8 12 November 2004...

Страница 2: ...ocument may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying or recorded by any information storage or retrieval system without permission in wr...

Страница 3: ...technical description Chapter 7 Instructions for doing acceptance testing Document conventions The following conventions apply throughout this manual RF OUTPUT Titles marked on the instrument panel ar...

Страница 4: ...ter 3 LOCAL OPERATION 3 1 First time use 3 7 Individual source operation 3 15 Sweep 3 25 Utilities 3 29 Memory 3 43 Error messages 3 47 Chapter 4 SETUP 4 1 Combiner setup 4 3 Coupling 4 5 Applications...

Страница 5: ...v Preface PATENT PROTECTION The 2026Q CDMA Interferer MultiSource Generator is protected by the following patents EP 0322139 GB 2214012 US 4870384 EP 0125790 GB 2140232 US 4609881 US 5781600 US 597436...

Страница 6: ...ntal conditions specified in Chapter 1 Performance data in the Operating Instruction Manual otherwise the protection provided by the equipment may be impaired This product is not approved for use in h...

Страница 7: ...safe handling precautions WARNING Beryllium copper Some mechanical components within this instrument are manufactured from beryllium copper This is an alloy with a beryllium content of approximately...

Страница 8: ...ignals for testing radio communications apparatus If the equipment is not used in a manner specified by Aeroflex the protection provided by the equipment may be impaired Aeroflex has no control over t...

Страница 9: ...dans les conditions d environnement sp cifi es dans Performance data dans le chapitre 1 du manuel d utilisation Ce produit n est pas garanti pour fonctionner dans des atmosph res dangereuses ou pour...

Страница 10: ...rrecte se r f rer la partie Maintenance du Manuel de Maintenance pour les pr cautions de manipulation WARNING Bronze au b ryllium Dans cet quipement certaines pi ces m caniques sont base de bronze au...

Страница 11: ...le test d appareils de radio communications La protection de l quipement peut tre alt r e s il n est pas utilis dans les conditions sp cifi es par Aeroflex Aeroflex n a aucun contr le sur l usage de l...

Страница 12: ...el 1 Leistungsdaten Performance data der Bedienungsanleitung beschrieben betrieben werden Dieses Produkt ist nicht f r den Einsatz in gef hrlicher Umgebung z B Ex Bereich und f r medizinische Anwendun...

Страница 13: ...Bei inkorrekter Handhabung kann dieses Material Gesundheitssch den verursachen Siehe hierzu die Hinweise zur Handhabung im Service Handbuch WARNING Beryllium Kupfer In diesem Ger t sind einige mechan...

Страница 14: ...Aeroflex entwickelt und hergestellt um HF Signale geringer Leistung zum Test von Kommunikationseinrichtungen zu erzeugen Sollte das Ger t nicht auf die von Aeroflex vorgesehene Art und Weise verwende...

Страница 15: ...asciare che la temperatura all interno dello strumento si stabilizzi prima di alimentarlo per evitare formazione di condense Lo strumento deve essere utilizzato esclusivamente nelle condizioni ambient...

Страница 16: ...WARNING Berillio Berillio ossido di berillio utilizzato nella costruzione di alcuni componenti di quest apparato Questo materiale se maneggiato non correttamente pu causare danni alla salute Far rifer...

Страница 17: ...ettato e prodotto da Aeroflex generare segnali RF in bassa potenza per provare apparati di radio comunicazione Se lo strumento non utilizzato nel modo specificato da Aeroflex le protezioni previste su...

Страница 18: ...1 Especificaciones o Performance Data del Manual de Instrucciones Manual de Operaci n Funcionamiento Este producto no ha sido aprobado para su utilizaci n en entornos peligrosos o en aplicaciones m d...

Страница 19: ...ente podria causar da os a la salud En la secci n de mantenimiento y reparaci n encontrar normas de manejo de seguridad WARNING Berilio cobre Algunos componentes mec nicos contenidos en este instrumen...

Страница 20: ...de equipos de radiocomunicaciones Si el equipo fuese utilizado de forma diferente a la especificada por Aeroflex la protecci n ofrecida por el equipo pudiera quedar reducida Aeroflex no tiene control...

Страница 21: ...lay 1 3 Frequency selection 1 3 Output 1 3 Modulation 1 3 Incrementing 1 4 Frequency sweep 1 4 Memory 1 4 Programming 1 4 Calibration data 1 5 Spectral purity 1 5 Calibration 1 5 Performance data 1 6...

Страница 22: ...TEST SET CONNECTION TO RADIO RF OUTPUT RF OUTPUT A B C3702 50 50 6 dB Fig 1 1 2026Q simplified block diagram The instrument provides frequency hand offs without RF switching which allows a CDMA receiv...

Страница 23: ...g lighting conditions and the setting saved in memory Frequency selection Carrier frequency is either selected directly via the keyboard or remotely via the interfaces Frequency resolution is 1 Hz acr...

Страница 24: ...Control knob operation can be assigned for the adjustment of one parameter while another parameter is adjusted by the increment and decrement keys By this means two parameters for example carrier fre...

Страница 25: ...ally 121 dBc Hz at 20 kHz offset from a 1 GHz carrier these instruments can be used for both in channel and adjacent channel receiver measurements Harmonically related signals and non harmonics are ty...

Страница 26: ...over a temperature range of 17 C to 27 C For output levels from 20 dBm to 35 dBm 0 75 dB 865 MHz 895 MHz 0 75 dB 1750 MHz 1990 MHz Attenuator hold Inhibits operation of the step attenuator from the le...

Страница 27: ...20 kHz offset from a 1 GHz carrier RF leakage Less than 0 5 V at the carrier frequencies into a two turn 25 mm diameter loop 25 mm from the surface of the signal generator Modulation FM AM or phase mo...

Страница 28: ...range Maximum guaranteed output is reduced by 5 dB when pulse modulation is selected RF level accuracy Maximum additional uncertainty is 0 5 dB Input Front panel BNC connector with an input impedance...

Страница 29: ...ely programmable Capabilities Complies with the following subsets as defined in IEEE Std 488 1 SH1 AH1 T6 L4 SR1 RL1 PP0 DC1 DT1 C0 E2 RS 232 All standard signal generator functions except the supply...

Страница 30: ...GENERAL INFORMATION 1 10 control or from the front panel There are no mechanical adjustments required for realignment Dimensions and weight Height Width Depth Weight 177 mm 419 mm 488 mm 17 kg...

Страница 31: ...Maintenance manual 46880 087 Service manual consists of operating manual this document plus maintenance manual 43129 189 GPIB lead assembly 1 5 m 46884 649 RS 232 cable 9 way female to 25 way female...

Страница 32: ...ltiSource Generator 2026Q is in conformity with the following EC directive s including all applicable amendments Reference No Title 73 23 EEC Low Voltage Directive 89 336 EEC EMC Directive and that th...

Страница 33: ...onnector 2 7 Auxiliary port connector 2 7 FSK operation 2 8 Rack mounting 2 9 Routine safety testing and inspection 2 9 Cleaning 2 10 Cleaning the LCD window 2 10 Putting into storage 2 10 List of tab...

Страница 34: ...instrument Before switching on the instrument ensure that the fan outlet on the rear panel is not restricted i e clearance of at least 75 mm 3 in at the rear 25 mm 1 in at each side 15 mm 0 5 in on th...

Страница 35: ...g CEE 7 7 which allows it to be used in sockets with either a male earth pin standard C 3b or side earth clips standard C 2b the latter is commonly called the German Schuko plug In common with other S...

Страница 36: ...orm Dieses Netzkabel sollte nicht in D nemark verwendet werden da hier keine Erdeverbindung hergestellt wird Espa ol El cable de alimentaci n tipo Europeo Continental dispone de una clavija C4 normali...

Страница 37: ...grated into a rack or system an external power switch or circuit breaker may be required Whatever the disconnecting device make sure that you can reach it easily and that it is accessible at all times...

Страница 38: ...th 6 Pair with 7 Pair with 8 Pair with 9 Pair with 10 Pair with 11 Logic ground 12 1 24 13 Fig 2 1 GPIB connector contact assignments viewed from rear of instrument IEEE to IEC conversion An optional...

Страница 39: ...o the instrument is used to reprogram the internal flash memory and may also be used to control the instrument using the common GPIB command set RS 232 connector The rear panel male D type RS 232 conn...

Страница 40: ...The frequency shifts produced by the applied data are as shown in Table 2 2 below for 2FSK and in Table 2 3 below for 4FSK Table 2 2 Auxiliary port inputs for 2FSK FSK A FSK B SOURCE A pin 14 pin 15...

Страница 41: ...ing environment maintenance and use and should be assessed in accordance with guidelines issued by the Health and Safety Executive HSE As a guide this equipment when used indoors in a relatively clean...

Страница 42: ...st Significant differences between the previous readings and measured values should be investigated If any failure is detected during the above visual inspection or tests the equipment should be disab...

Страница 43: ...supporting facilities Conventions The following conventions are used in this chapter RF OUTPUT Titles marked on the instrument panel are shown in capital letters SETUP Hard key titles are shown in squ...

Страница 44: ...R 50W MAX OUTPUT TO RADIO TEST SET CONNECTION TO RADIO TOTAL D 1 2 23 20 24 21 17 26 18 22 25 16 14 15 13 12 11 10 19 4 3 5 6 7 8 C4289 9 Fig 3 1 2026Q front panel 1 SUPPLY Switches the AC supply volt...

Страница 45: ...epts a pulsed input 21 MOD I O 100 k BNC connector fitted to each signal source which allows an external modulating signal to be applied Also provides a modulation oscillator output from a 600 source...

Страница 46: ...ote control of the instrument as well as to reprogram the internal flash memory For contact allocation see RS 232 connector in Chapter 2 4 GPIB 1 24 pin socket accepts standard IEEE connector to allow...

Страница 47: ...is shows the Signal Generator menu as it appears during normal operation If the default display shown in Fig 3 3 is not obtained a previous user may have set the instrument to switch on with one of th...

Страница 48: ...esignator C When one or more sources are connected via the combiner to the CONNECTION TO RADIO socket the combiner panel displays this information by showing either or A B Note that the signal source...

Страница 49: ...E USE 3 7 Modulation state Modulation Error message Signal source C3884 Carrier frequency Frequency standard RF level Soft keys Soft keys Fig 3 4 Division of the Signal Generator menu main display int...

Страница 50: ...ng the Select Waveform key For external modulation this key is replaced by the Select Coupling key Internal modulation switching is controlled by the FM ON OFF AM ON OFF and M ON OFF keys Error messag...

Страница 51: ...Err 1100 Carrier Limit to be displayed it can be canceled by a correct entry for example by entering a value which is within limits RF level 3 Press RF LEVEL which causes its key label to be highligh...

Страница 52: ...rameters are prevented Two parameter adjustment A feature of this instrument is that the KNOB LOCK key enables you to simultaneously and independently adjust two parameters using the control knob and...

Страница 53: ...tep sizes of the currently selected signal source B3885 Fig 3 5 Steps menu 2 Select Carrier Step enter the value on the key pad and press a terminator key The step value will appear on the screen 3 Re...

Страница 54: ...he Total Shift Menu for the selected signal source This displays the amount of shift from the reference caused by using the control knob or keys to adjust the parameters see Fig 3 6 below B3886 Fig 3...

Страница 55: ...ard key to show the Combiner Summary similar to that shown in Fig 3 7 below B3887 Fig 3 7 Combiner summary 2 You can reset the carrier frequencies and RF levels for each of the sources fitted in your...

Страница 56: ...ncy in the range 10 kHz to 2 4 GHz to a resolution of 1 Hz 1 Press SIG GEN to show the Signal Generator menu with the current carrier frequency displayed 2 Press the Carrier Freq soft key to select ca...

Страница 57: ...range is requested an error message is displayed and the instrument is automatically set to the end of the range 4 You can then adjust the level either in steps using the keys or by using the control...

Страница 58: ...itionally pulse modulation is available from an external source The internal modulation oscillator is capable of generating two tones simultaneously in one modulation channel and has a frequency range...

Страница 59: ...how your new current modulation mode 4 Press SIG GEN to display the Signal Generator menu which has been modified to show the new configuration Signal Generator screens Changing the modulation mode by...

Страница 60: ...ode for example AM1 internal FM external has been selected the modulation field is divided horizontally into two panels one for each modulation source as shown in Fig 3 12 below B3903 Fig 3 12 Signal...

Страница 61: ...n the screen changes to show your new waveform selection 4 Press EXIT to return to the Signal Generator menu Modulation source adjustment You can adjust the phase difference of modulation oscillator C...

Страница 62: ...e Fig 3 15 below B3906 Fig 3 15 External source coupling menu the DCFM Nulling key only appears during FM external modulation mode with DC coupling 3 Select between Ext AC Coupling Ext ALC Coupling an...

Страница 63: ...ready in the AM mode 3 Press AM Depth Enter the modulation depth using the numerical key pad and terminate with any ENTER key If you exceed the 99 9 modulation limit it is automatically reset to the m...

Страница 64: ...lf of the screen 2 Press the M soft key if displayed otherwise the instrument is already in the M mode 3 Press M Devn Enter the deviation using the numerical key pad and terminate with the rad key If...

Страница 65: ...ies Selection Menu 2 is displayed it will be necessary to press the Utils Menu 1 key 2 Select Mod n Mode to display the Modulation Mode Selection Menu 3 Use the Up and Down keys to move the selection...

Страница 66: ...nd triggered by a key press an external pulse or GPIB control Once started the sweep can be stopped at any time when the display will indicate the current parameter value Sweep operation 1 Press the S...

Страница 67: ...Only at the end of each sweep is the trigger latch reset ready for the next input Ext Trig StrtStop The first trigger input starts the carrier sweep and the following trigger input pauses it so that t...

Страница 68: ...ow the progress of the sweep 13 The sweep can be stopped at any time by pressing Stop Sweep This causes the key function to change to Continue Sweep and Sweep Status changes to PAUSED 14 Whilst the sw...

Страница 69: ...ction is made and then one of the other hard keys for example MEM is pressed pressing UTIL once returns to the sub menu pressing it again returns to the primary menu This provides an operating short c...

Страница 70: ...isplay Adjust to call up the Display Adjustment Utility shown in Fig 3 22 below B3913 Fig 3 22 Display adjustment utility 2 Set the required brightness by pressing Dim Medium or Bright You can then ad...

Страница 71: ...external standard Frequency standard selection is as follows 1 Select Freq Standard to display the Frequency Standard Selection Menu shown in Fig 3 23 below This shows the currently selected standard...

Страница 72: ...stments in steps of 0 09 0 9 and 2 7 respectively 3 Press Phase Shift and adjust the carrier phase using the control knob Turn clockwise to advance the phase and anticlockwise to retard the phase Note...

Страница 73: ...nits Selection Menu which shows the current selection see Fig 3 25 below B3916 Fig 3 25 RF level units selection menu 2 Select between linear and logarithmic units in EMF or PD Logarithmic units may b...

Страница 74: ...otected Proceed as follows 1 Press 50 75 Cal to display the 50 Ohm 75 Ohm Calibration Menu shown in Fig 3 26 below B3917 Fig 3 26 50 ohm 75 ohm calibration menu 2 Press 50 75 Cal which toggles between...

Страница 75: ...Press Power Up Options to display the Power Up Options Menu shown in Fig 3 27 below This shows the currently selected power up choice B3918 Fig 3 27 Power up options menu 2 Press Factory Power Up to...

Страница 76: ...1 dB Status ON Modulation mode Internal FM modulation disabled Modulations FM1 Deviation 0 Hz OFF Internal source frequency 1 kHz sine FM2 Deviation 0 Hz OFF Internal source frequency 400 Hz sine M1...

Страница 77: ...enu 1 Modulation mode is selected by pressing Mod n Mode to display the Modulation Mode Selection Menu shown in Fig 3 28 below Use of the menu is explained earlier under Modulation mode selection B391...

Страница 78: ...he instrument and within the range 0 to 30 RS 232 mode 3 Press Data Bits to toggle between 7 and 8 data bits 4 Press Stop Bits to toggle between 1 and 2 stop bits 5 Press Parity to cycle through the s...

Страница 79: ...f the current background errors to be shown Proceed as follows 1 Press Backg nd Errors which causes the Current Background Errors display similar to that in Fig 3 30 below to be shown The errors are s...

Страница 80: ...ock to Level 1 press Unlock Level 1 and enter a 4 digit password the default is 1234 As each digit is entered an asterisk is displayed Terminate with ENTER 3 To unlock to Level 2 press Unlock Level 2...

Страница 81: ...Utilities selection menu 2 some of these keys only appear when unlocked to the appropriate Level To obtain Utilities Selection Menu 1 from the menu select Utils Menu 1 Software information menu 2 You...

Страница 82: ...well as options fitted B3925 Fig 3 34 Hardware status display 1 Press EXIT to return to the Utilities Selection Menu 2 Patent information menu 2 To obtain the more important patent information press P...

Страница 83: ...the protection to Level 1 by means of the Lock Unlock Utility Menu 1 2 Press Display Blanking which causes the screen shown in Fig 3 36 above to be displayed 3 To blank the screen press the Blanking O...

Страница 84: ...928 Fig 3 37 Latch access utility Elapsed time menu 2 The elapsed time facility displays the total number of operating hours as well as the number of elapsed operating hours since the last reset by th...

Страница 85: ...f times each of the fitted sources has tripped The screen is shown in Fig 3 39 below B3930 Fig 3 39 RPP trip count utility Display test utility menu 2 This utility provides a simple test of the displa...

Страница 86: ...g 3 41 Keyboard knob test utility Calibration utility menu 2 This menu shows when each individual item was last adjusted and enables you to enter the date of the current adjustment The instrument must...

Страница 87: ...tions numbered 0 to 99 for the storage of instrument settings This store is used to store those parameters which currently affect the RF output carrier frequency RF level modulations in use on off and...

Страница 88: ...king on page 3 37 Memory protection Memory stores may be protected against accidental overwriting of the contents Memory protection summary 1 To see which store locations are protected or unprotected...

Страница 89: ...Menu Note that at power on the volatile RAM stores are unprotected to allow immediate use Memory recall There are three types of recall carrier full and RAM Both carrier and full stores are non volati...

Страница 90: ...press the Full Store Carrier Store or RAM Store key for the type of recall required then enter the store location via the numerical key pad and terminate with ENTER 3 Pressing Memory Protect causes a...

Страница 91: ...will display the following message Err 100 Carrier limit on the screen The foreground errors are cleared upon function selection or by re entering the parameter correctly Foreground errors are listed...

Страница 92: ...ional N loop high 503 dde Ext standard missing 504 dde External std frequency low 505 dde External std frequency high 506 dde VCXO loop low 507 dde VCXO loop high 508 dde Amplitude mod unleveled 509 d...

Страница 93: ...xe FM2 step limit 113 exe M limit 114 exe M2 limit 115 exe M step limit 116 exe M2 step limit 117 exe Memory limit 118 exe AM mod freq limit 119 exe AM mod step limit 120 exe AM2 mod freq limit 121 ex...

Страница 94: ...pplication 398 399 exe Error queue full Source specific Table 3 4 GPIB errors 400 499 400 cme Syntax error 401 cme Unrecognized mnemonic 402 cme Numeric syntax 403 cme Data expected 404 cme Illegal da...

Страница 95: ...med to minimize the number of parameter entries required For example for intermodulation testing with equal amplitude sources only one RF level control is provided and this automatically sets the leve...

Страница 96: ...g the source to its own RF OUTPUT connector shown by O P on the display or via the combiner to the CONNECTION TO RADIO connector shown by Use these keys to select your required configuration As shown...

Страница 97: ...requency B frequency A N offset frequency where N is an integer between 1 and 9 The B source can be coupled only by entering its value relative to the A source Offsets can have either positive or nega...

Страница 98: ...nd terminate with any ENTER key 5 Press Enable Disable which toggles between the two states shown on the display When Enable is selected the Sig Gen menu is modified by the addition of an arrow and th...

Страница 99: ...can be displayed in graphical form to ensure that the user understands how the sources are connected to the RF connectors In addition a stylized spectral diagram can be displayed which shows how the m...

Страница 100: ...nes but also due to amplifier non linearity intermodulation products One tone is provided from source A at the required amplifier frequency The second interfering tone is provided from source B at a d...

Страница 101: ...er offset frequency Fig 4 7 Intermodulation distortion test on amplifier 2 tone selected 7 Select Carrier Freq and RF Level to set these parameters The carrier frequency entered is that for the A sour...

Страница 102: ...This enables you to temporarily leave the test for example to adjust the control knob To cancel the current operation but restore to the previous combiner and coupling setups press No Appl n mode 2 P...

Страница 103: ...hich returns you to the Applications Selection Menu to enable you to select an alternative test 6 Pressing Accept Appl n displays a screen similar to that shown in Fig 4 12 below The screen is split h...

Страница 104: ...e use the Var Chan key which toggles between the variable and channel modes 13 Press the Channel Spacing key and enter the channel spacing frequency using the keyboard 14 Set the required interferer o...

Страница 105: ...tion press SETUP This causes the Setup Menu shown in Fig 4 16 below to be displayed The screen is split horizontally in two with the upper part displaying the application mode and the lower part displ...

Страница 106: ...cted by operation of the front panel The keyboard can only be re enabled by releasing Local Lockout over the remote interface or by switching the supply off and on again Remote local operation When th...

Страница 107: ...splay the Utilities Selection Menu 1 if necessary additionally press Utils Menu 1 2 Press Remote Control to display the Remote Control Utility shown in Fig 5 1 below Fig 5 1 Remote control utility 3 S...

Страница 108: ...chieved with the control lines and the flow control to the remote control is achieved by XON XOFF Control characters The following list shows the control characters that are used over the RS 232 syste...

Страница 109: ...consulted GPIB control port The connections required between the GPIB interface port and the controlling device are described in Chapter 2 under General Purpose Interface Bus GPIB Setting GPIB addres...

Страница 110: ...DECIMAL NUMERIC PROGRAM DATA CHARACTER PROGRAM DATA SUFFIX PROGRAM DATA STRING PROGRAM DATA ARBITRARY BLOCK PROGRAM DATA Device talking elements The following is a list of the device talking elements...

Страница 111: ...e read by the controller Common commands and queries defined in IEEE 488 2 begin with a Upper and lower case characters are considered equivalent so FM fm Fm fM are all interpreted by the instrument i...

Страница 112: ...enerated Failure to follow the protocol will generate a query error INTERRUPTED error 450 occurs when the controller starts to send a new message before having read the response to a preceding query U...

Страница 113: ...t power up state TST Self Test Query Returns a 0 when the GPIB interface and processor are operating OPC Operation Complete Command Sets the Operation Complete bit in the Standard Event Status Registe...

Страница 114: ...are similar for a group of queries not all are listed Some queries can produce more than one type of response an example of each is usually given In the list which follows the abbreviations char nrf a...

Страница 115: ...ffices None Default suffix None Examples CMODE AB CMODE Prepares message containing information on the combined output mode setting in the following format CMODE mode Example CMODE AB Coupling carrier...

Страница 116: ...sage containing information on the Coupling Mode in the following format COUPLING MODE mode where mode is character program data indicating the coupling mode selections Example COUPLING MODE CFRQAB RF...

Страница 117: ...step RETN Return to original setting XFER Transfer current value to be the new setting Data type None Allowed suffices None Default suffix None PHASE Adjust Phase Offset of Carrier in degrees Data ty...

Страница 118: ...cts EMF or PD for voltage related units Data type Character Program Data EMF or PD Allowed suffices None Default suffix None UNITS Select default RF level units Data type Character Program Data DBM DB...

Страница 119: ...ed with any of the AM FM PM FSK2L and FSK4L modes FSK2L and FSK4L parameters are controlled using the FM commands MODE Prepares message containing information on Modulation Mode in the following forma...

Страница 120: ...VN 25KHZ INT ON FM1 DEVN 15KHZ INC 1KHZ EXTDC MODF Set FM modulation oscillator frequency short form VALUE Set FM modulation oscillator frequency INC Set FM modulation oscillator frequency step size D...

Страница 121: ...mnemonic representing the source of the modulation signal and status is a program mnemonic indicating whether the frequency modulation is locally ON or OFF Example FM1 DEVN 25000 0 INT ON INC 1000 0...

Страница 122: ...scillator frequency step size Data type Decimal Numeric Program Data Allowed suffices Any one of GHZ MHZ KHZ or HZ Default suffix HZ UP Go UP one step DN Go DOWN one step RETN Return to original setti...

Страница 123: ...rmation on PM modulation oscillator setting in one of the following formats PM MODF VALUE nr2 shape INC nr2 PM1 MODF VALUE nr2 shape INC nr2 PM2 MODF VALUE nr2 shape INC nr2 where shape is a program m...

Страница 124: ...e Examples AM DEPTH 30 5PCT EXTAC ON AM1 DEPTH 40PCT INT OFF MODF Set AM modulation oscillator frequency short form VALUE Set AM modulation oscillator frequency INC Set AM modulation oscillator freque...

Страница 125: ...modulation signal and status is a program mnemonic indicating whether the amplitude modulation is locally ON or OFF Example AM1 DEPTH 56 6 INT ON INC 5 0 AM MODF or AM1 MODF or AM2 MODF Prepares messa...

Страница 126: ...lation OFF Data type None Allowed suffices None Default suffix None Examples PULSE ON PULSE OFF PULSE Prepares message containing information on Pulse Modulation setting in the following format PULSE...

Страница 127: ...RQ Recall Carrier Freq Store 0 99 FULL Recall Full Store 0 99 RAM Recall RAM Store 0 99 Data type Decimal Numeric Program Data Allowed suffices None Default suffix None Examples RCL FULL 7 RCL RAM 83...

Страница 128: ...Stores memory block which is to be protected unprotected Data type Decimal Numeric Program Data Allowed suffices None Default suffix None ON Set memory protection ON i e write protected for the select...

Страница 129: ...WEEP CFRQ START 1230000 0 STOP 1330000 0 INC 100 0 TIME 20 0 Sweep mode Note that for triggering the order of priority is as follows FSK logic input Memory recall Sweep trigger Therefore ensure that F...

Страница 130: ...mode selected and trig is character program data indicating the trigger type selected Example SWEEP SOURCE A MODE CONT TRIG STEP Sweep control SWEEP not used alone GO Commence Sweep HALT Pause Sweep C...

Страница 131: ...NT Prepares message containing information on the number of times the RPP Circuitry of the current source has tripped in the following format nr1 Example 3 ATTEN not used alone LOCK Lock the Attenuato...

Страница 132: ...dapter mode for all sources Data type Character program data Z50R or Z75R Allowed suffices None Default suffix None Example IMPEDANCE Z75R IMPEDANCE Prepares message containing information on which ad...

Страница 133: ...ata Allowed suffices None Default suffix None Example BRIGHTNESS MEDIUM BRIGHTNESS Prepares message containing information on LCD brightness setting in the following format BRIGHTNESS brightness where...

Страница 134: ...x None FULL Set the FULL store memory location for a memory power up Data type Decimal Numeric Program Data Allowed suffices None Default suffix None Example POWUP MODE MEMORY POWUP FULL 54 POWUP Prep...

Страница 135: ...Hardware Status Registers Bit 0 is unused The following is an explanation of how the Hardware Event Registers operate Note that the Coupling and Instrument Event Registers operate in a similar fashion...

Страница 136: ...ition Filter determines which transition of the Condition Register data bits will set the corresponding bit in the Event Register Either positive going negative going or both transitions can set bits...

Страница 137: ...exe d e opc opc opc d e 7 7 3 5 5 1 1 6 6 2 2 4 4 3 0 0 Transition Filter Condition Register Status Register C0069 Positive transition sets status Enable Register OR pon power on urq user request used...

Страница 138: ...lled d1 fractional n loop low d9 output unlevelled d2 fractional n loop high d10 high power amplifier failed d3 external standard missing d11 alc too high d4 external standard frequency too low d12 al...

Страница 139: ...h d8 not used d1 not used d9 not used d2 not used d10 carrier limited by coupling d3 am2 depth restricted by requested am1 depth d11 offset limited by harmonic d4 fm2 deviation restricted by requested...

Страница 140: ...espective instrument event register summary bits are jointly summarized in the Status Byte Negative transition sets status d0 sweep in progress end of sweep d1 not used not used d2 selfcal in progress...

Страница 141: ...are available to be read from the Output Queue The erb status bit is set when one or more errors are present in the Error Queue The ERROR query will place a nr1 response message in the Output Queue re...

Страница 142: ...nores data sent by SRE and always returns 0 in response to SRE rqs esb and mav are defined in IEEE 488 2 erb is a device defined queue summary bit indicating that the error queue is non empty mss is t...

Страница 143: ...ndicating that the error queue is non empty rqs is set by a request for service and is cleared by the poll esb is the standard event register summary bit mav is message available indicating that the o...

Страница 144: ...C Select source C as current CCR Reads from Coupling Condition Register CSE nrf Writes to Coupling Status Enable Register CSE Reads from Coupling Status Enable Register CSR Reads from Coupling Status...

Страница 145: ...two signals and used in combination with an external modulation source connected to the front panel EXT MOD INPUT connector In addition to analogue FM 2 level and 4 level FSK signals are generated fro...

Страница 146: ...FILTERS VCXO LOOP 5MHz FM M FRAC N SYNTH RF LEVEL DAC AM DEPTH DAC DEV N DAC DAC PULSE INPUT RF OUTPUT B SOURCE B SOURCE A SOURCE TRIGGER 1 TRIGGER 2 AUXILIARY PORT 10kHz 2 4GHz RS232 GPIB 1 MOD I O 0...

Страница 147: ...measurement techniques Test precautions To ensure minimum errors and uncertainties when making measurements it is important to observe the following precautions 1 Always use recently calibrated test...

Страница 148: ...analyzer DC to 7 2 GHz 3 Hz resolution bandwidth Anritsu MS2602A or IFR 2386 Modulation meter AM FM and M 50 kHz to 2 4 GHz Accuracy 1 at 1 kHz modulation frequency IFR 2305 plus Distortion Option Fun...

Страница 149: ...for carrier frequencies up to 1 2 GHz 137 dBm to 20 dBm for carrier frequencies above 1 2 GHz Accuracy For output levels from 127 dBm to 6 dBm and over a temperature range of 17 C to 27 C 0 8 dB to 1...

Страница 150: ...g Table 7 4 8 Repeat 1 to 7 for source B ALC linearity Test procedure 1 Perform AUTO ZERO and AUTO CAL on the power meter 2 Connect the test equipment as shown in Fig 7 1 3 On the UUT set source A to...

Страница 151: ...the UUT using the 10 key in 11 dB steps down to an RF level of 103 1 dBm measuring the received level at each step shown in Table 7 8 Check that the results are within specification 6 Set the UUT to c...

Страница 152: ...elect RF Board Shift Reg 1 5 Set a reference on the power meter such that 0 dB is indicated 6 On the UUT use Cursor Left to move the cursor to the MSB and press Toggle Bit 01111101 This will enable th...

Страница 153: ...eter 0 1 dB from 10 kHz to 2 4 GHz IFR 6960B and 6920 RF level frequency response Test procedure 1 Perform AUTO ZERO and AUTO CAL on the power meter 2 Connect the test equipment as shown in Fig 7 1 wi...

Страница 154: ...le N type male to SMA type male for N type cable N type male to SMA type female for SMA type cable 1 Reset the instrument 2 Ensure the calibrated 50 termination is connected to OUTPUT TO RADIO TEST SE...

Страница 155: ...1 Reconnect the chained 50 termination to INPUT FROM RADIO TEST SET on the rear panel 2 Connect the cable between RF OUTPUT from tray A and CONNECTION TO RADIO 3 Connect the power meter to OUTPUT FRO...

Страница 156: ...est set up 1 Connect the test equipment as shown in Fig 7 3 2 Connect the internal frequency standard from the UUT to the external standard input on the counter 3 On the UUT set source A to Carr Freq...

Страница 157: ...than 0 5 V at the carrier frequency into a two turn 25 mm loop 25 mm away from the surface of the signal generator Test equipment Description Minimum specification Example Spectrum analyzer DC to 7 2...

Страница 158: ...nect the test equipment as shown in Fig 7 4 3 On the UUT set source A to Carr Freq 1201 MHz RF Level 0 dB 4 Measure the level of the non harmonics on the spectrum analyzer at each of the carrier frequ...

Страница 159: ...4 Set the signal generator to a carrier frequency of 470 455 MHz RF level 0 dBm 5 On the measuring receiver Select 24 5 SPCL to establish the IF reference value in volts Select 24 6 SPCL to set the r...

Страница 160: ...03 MHz SPAN DIV 10 Hz PEAK FIND MKR 1 SET REF FREQ 5 Disconnect the cable from the UUT RF output socket and place a 25 mm 2 turn loop on the end of the cable 6 Connect a 50 sealed load to the UUT RF...

Страница 161: ...dulation levels reduce with reducing RF levels Test equipment Description Minimum specification Example 50 load 1 W 50 nominal impedance DC to 2 4 GHz Lucas Weinschel M1404N Spectrum analyzer DC to 2...

Страница 162: ...the spectrum analyzer connected to the combined RF output 2 On the UUT set source A to Carr Freq 800 MHz RF Level 0 dB Terminate source A with the 50 termination Ensure source B is turned off or set...

Страница 163: ...ate for deviations up to 10 kHz External modulation input 1 V RMS for set deviation Modulation ALC Levels the applied external modulation over the range 0 75 to 1 25 V RMS FSK Accepts logic level inpu...

Страница 164: ...0 Hz 15 kHz filter 4 Measure the FM accuracy and distortion at the carrier frequencies shown in Table 7 28 checking that the results are within specification 5 Repeat 2 to 4 for source B FM scale shap...

Страница 165: ...ENCY display will read 0 00 kHz 4 On the UUT set source A to FM Devn 100 kHz FM ON OFF UTIL Mod n Mode Press Down until FM external can be selected Select Mode EXIT SIG GEN Select Coupling Ext DC Coup...

Страница 166: ...elected Select Mode EXIT SIG GEN Select Coupling Ext DC Coupling DCFM Nulling EXIT 3 Set the function generator to give 1 V RMS 1 kHz sine wave 4 On the modulation meter select CAL FM 10 Hz 300 kHz fi...

Страница 167: ...hin the specification shown against 0 Hz in Table 7 31 20log10 2FM2 FM1 14 Repeat 2 to 13 for source B External FM frequency response ALC on Test procedure 1 Connect the test equipment as shown in Fig...

Страница 168: ...Description Minimum specification Example Modulation meter M and FM accuracy 2 at 1 kHz modulation frequency IFR 2305 with Distortion Option Phase modulation Test procedure 1 Connect the test equipme...

Страница 169: ...the modulation meter select CAL FM 50 Hz 15 kHz LF filter 4 Measure the deviation on the modulation meter and calculate the phase modulation using the formula M FM dev Hz mod freq Hz 5 On the UUT set...

Страница 170: ...measurement Solartron 7150 50 load termination 1 W 50 nominal impedance DC to 2 4 GHz Lucas Weinschel M1404N Audio analyzer Capable of measuring THD of 0 01 from 100 Hz to 20 kHz Rhode Schwarz UPA3 Fu...

Страница 171: ...ce A to Carr Freq 400 MHz RF Level 4 dB AM AM Depth 80 AM ON OFF UTIL Mod n Mode Press Down until AM external can be selected Select Mode EXIT SIG GEN Select Coupling Ext DC Coupling EXIT 3 Set the fu...

Страница 172: ...n generator output to the DVM and set this voltage as close as possible to 1 4142 V 12 Measure the power on the power meter P1 _____ 13 Set the function generator to 1 4142 V DC temporarily connect th...

Страница 173: ...e 32 MHz to 2 4 GHz IFR 2386 or 2383 50 load termination 1 W 50 nominal impedance DC to 2 4 GHz Lucas Weinschel M1404N Oscilloscope 100 MHz bandwidth Tektronix TAS 465 Function generator DC to 10 kHz...

Страница 174: ...ment as shown in Fig 7 12 3 On the UUT set source A to Carr Freq 32 MHz RF Level 0 dB UTIL Mod n Mode Pulse Enab Dis EXIT SIG GEN Pulse ON OFF 4 Set the function generator to provide 5 V DC The RF out...

Страница 175: ...13 2 On the UUT set source A to Carr Freq 50 MHz RF Level 7 dB UTIL Mod n Mode Pulse Enab Dis EXIT SIG GEN Pulse ON OFF 3 Set the function generator to produce 10 kHz 0 V to 5 V square wave 4 Adjust...

Страница 176: ...4 GHz IFR 2440 50 load termination 1 W 50 nominal impedance DC to 2 4 GHz Lucas Weinschel M1404N Audio analyzer Capable of measuring THD of 0 01 at 1 kHz Rohde Schwarz UPA3 Modulation oscillator frequ...

Страница 177: ...ulation source FM Mod Freq 1 kHz 3 Measure the distortion on the audio analyzer checking that the result is within the specification shown in Table 7 48 4 Measure the absolute level on the audio analy...

Страница 178: ...INPUT rear panel C3492 Fig 7 16 External standard test set up 1 Connect the test equipment as shown in Fig 7 16 2 On the UUT set source A to UTIL Freq Standard 1MHz Ext Ind 3 Set the signal generator...

Страница 179: ...__ 0 8 180 0 8 ____ ____ 0 8 300 0 8 ____ ____ 0 8 420 0 8 ____ ____ 0 8 540 0 8 ____ ____ 0 8 660 0 8 ____ ____ 0 8 780 0 8 ____ ____ 0 8 900 0 8 ____ ____ 0 8 1020 0 8 ____ ____ 0 8 1140 0 8 ____ __...

Страница 180: ..._ 6 8 420 5 2 ____ ____ 6 8 540 5 2 ____ ____ 6 8 660 5 2 ____ ____ 6 8 780 5 2 ____ ____ 6 8 900 5 2 ____ ____ 6 8 1020 5 2 ____ ____ 6 8 1140 5 2 ____ ____ 6 8 1200 5 2 ____ ____ 6 8 1201 4 4 ____ _...

Страница 181: ...300 12 ____ ____ 14 420 12 ____ ____ 14 540 12 ____ ____ 14 660 12 ____ ____ 14 780 12 ____ ____ 14 900 12 ____ ____ 14 1020 12 ____ ____ 14 1140 12 ____ ____ 14 1200 12 ____ ____ 14 1201 11 ____ ____...

Страница 182: ...23 ____ ____ 25 420 23 ____ ____ 25 540 23 ____ ____ 25 660 23 ____ ____ 25 780 23 ____ ____ 25 900 23 ____ ____ 25 1020 23 ____ ____ 25 1140 23 ____ ____ 25 1200 23 ____ ____ 25 20 dBm 1201 18 ____...

Страница 183: ...____ ____ 8 8 7 ____ ____ 9 9 8 ____ ____ 10 10 9 ____ ____ 11 11 10 ____ ____ 12 12 11 ____ ____ 13 12 1 11 1 ____ ____ 13 1 12 2 11 2 ____ ____ 13 2 12 3 11 3 ____ ____ 13 3 12 4 11 4 ____ ____ 13 4...

Страница 184: ...____ ____ 8 8 7 ____ ____ 9 9 8 ____ ____ 10 10 9 ____ ____ 11 11 10 ____ ____ 12 12 11 ____ ____ 13 12 1 11 1 ____ ____ 13 1 12 2 11 2 ____ ____ 13 2 12 3 11 3 ____ ____ 13 3 12 4 11 4 ____ ____ 13 4...

Страница 185: ...____ ____ 6 6 6 4 4 ____ ____ 7 6 7 5 ____ ____ 9 8 6 ____ ____ 10 9 7 ____ ____ 11 10 8 ____ ____ 12 11 9 ____ ____ 13 12 10 ____ ____ 14 12 1 10 1 ____ ____ 14 1 12 2 10 2 ____ ____ 14 2 12 3 10 3 _...

Страница 186: ...___ 58 3 70 1 70 9 ____ ____ 69 3 81 1 81 9 ____ ____ 80 3 92 1 92 9 ____ ____ 91 3 103 1 103 9 ____ ____ 102 3 Table 7 9 Attenuator test at 540 MHz RF level dBm RF level min dBm Result dBm src A src...

Страница 187: ...___ 58 3 70 1 70 9 ____ ____ 69 3 81 1 81 9 ____ ____ 80 3 92 1 92 9 ____ ____ 91 3 103 1 103 9 ____ ____ 102 3 Table 7 11 Attenuator test at 1740 MHz RF level dBm RF level min dBm Result dBm src A sr...

Страница 188: ..._ 79 5 92 1 93 7 ____ ____ 90 5 103 1 104 7 ____ ____ 101 5 Table 7 13 Alternative attenuator functional test at 10 MHz Attenuator pad Measured value dB src A src B 33 dB ____ ____ 22 dB ____ ____ 33...

Страница 189: ...5 75 ____ ____ 34 25 880 35 75 ____ ____ 34 25 895 35 75 ____ ____ 34 25 1930 35 75 ____ ____ 34 25 1960 35 75 ____ ____ 34 25 1990 35 75 ____ ____ 34 25 Table 7 16 CONNECTION TO RADIO output at 0 dBm...

Страница 190: ...x MHz 0 01 ____ ____ 1 ____ ____ 9 999999 ____ ____ 18 75 ____ ____ 37 5 ____ ____ 75 ____ ____ 150 ____ ____ 300 ____ ____ 600 ____ ____ 1200 1199 999988 ____ ____ 1200 000012 1200 000001 ____ ____ 1...

Страница 191: ...___ ____ 18 8 30 ____ ____ 30 ____ ____ 37 4 30 ____ ____ 30 ____ ____ 37 6 30 ____ ____ 30 ____ ____ 74 9 30 ____ ____ 30 ____ ____ 75 1 30 ____ ____ 30 ____ ____ 150 30 ____ ____ 30 ____ ____ 151 30...

Страница 192: ...___ ____ 18 8 30 ____ ____ 30 ____ ____ 37 4 30 ____ ____ 30 ____ ____ 37 6 30 ____ ____ 30 ____ ____ 74 9 30 ____ ____ 30 ____ ____ 75 1 30 ____ ____ 30 ____ ____ 150 30 ____ ____ 30 ____ ____ 151 30...

Страница 193: ...___ ____ 18 8 25 ____ ____ 25 ____ ____ 37 4 25 ____ ____ 25 ____ ____ 37 6 25 ____ ____ 25 ____ ____ 74 9 25 ____ ____ 25 ____ ____ 75 1 25 ____ ____ 25 ____ ____ 150 25 ____ ____ 25 ____ ____ 151 25...

Страница 194: ...____ 18 8 25 ____ ____ 25 ____ ____ 37 4 25 ____ ____ 25 ____ ____ 37 6 25 ____ ____ 25 ____ ____ 74 9 25 ____ ____ 25 ____ ____ 75 1 25 ____ ____ 25 ____ ____ 150 25 ____ ____ 25 ____ ____ 151 25 __...

Страница 195: ...75 64 ____ ____ 2001 25 64 ____ ____ 1601 800 5 64 ____ ____ 2401 5 64 ____ ____ 1999 1499 25 64 ____ ____ 2498 75 64 ____ ____ 1999 999 5 64 ____ ____ 2998 5 64 ____ ____ 2001 1600 8 60 ____ ____ 240...

Страница 196: ...__ ____ 1349 0 5 V ____ ____ 2399 0 5 V ____ ____ Table 7 26 Sources A B intermod test RF level Source A frequency Source B frequency Spacing Lower IP frequency Upper IP frequency Max IP level Result...

Страница 197: ...105 3 ____ ____ 10 441 95 ____ ____ 105 3 ____ ____ 10 592 95 ____ ____ 105 3 ____ ____ 10 746 95 ____ ____ 105 3 ____ ____ 10 901 95 ____ ____ 105 3 ____ ____ 11 059 95 ____ ____ 105 3 ____ ____ 11...

Страница 198: ...____ 10 5 1 0 95 ____ ____ 1 05 0 1 0 095 ____ ____ 0 105 Table 7 30 Carrier error test at 1 2 GHz FM deviation 100 kHz Carrier error Result kHz src A src B 1 kHz ____ ____ Table 7 31 External FM fre...

Страница 199: ...deviation 1 25 V input Modulation frequency kHz Response level min dB Result dB src A src B Response level max dB Distortion Result src A src B 0 02 1 ____ ____ 1 0 1 1 ____ ____ 1 3 ____ ____ 0 3 1 _...

Страница 200: ...lt at 30 depth 1 5 src A src B Result at 80 depth 2 5 src A src B 1 5 28 5 ____ ____ 31 5 76 ____ ____ 84 ____ ____ ____ ____ 5 28 5 ____ ____ 31 5 76 ____ ____ 84 ____ ____ ____ ____ 9 28 5 ____ ____...

Страница 201: ...____ ____ 31 5 76 ____ ____ 84 ____ ____ ____ ____ 500 28 5 ____ ____ 31 5 76 ____ ____ 84 ____ ____ ____ ____ Table 7 38 Internal AM depth and distortion tests at 7 dBm AM depth 30 AM depth 80 Disto...

Страница 202: ...11 28 5 ____ ____ 31 5 76 ____ ____ 84 ____ ____ ____ ____ 20 28 5 ____ ____ 31 5 76 ____ ____ 84 ____ ____ ____ ____ 50 28 5 ____ ____ 31 5 76 ____ ____ 84 ____ ____ ____ ____ 100 28 5 ____ ____ 31 5...

Страница 203: ...____ ____ 1 0 1 1 ____ ____ 1 0 3 1 ____ ____ 1 1 reference 10 1 ____ ____ 1 20 1 ____ ____ 1 30 1 ____ ____ 1 Table 7 42 External AM frequency response ALC off DC coupled RF level 6 dBm Modulation f...

Страница 204: ...20 8 3 ____ ____ 5 7 540 8 3 ____ ____ 5 7 660 8 3 ____ ____ 5 7 780 8 3 ____ ____ 5 7 900 8 3 ____ ____ 5 7 1020 8 3 ____ ____ 5 7 1140 8 3 ____ ____ 5 7 1200 8 3 ____ ____ 5 7 1201 9 1 ____ ____ 4 9...

Страница 205: ...20 2 7 ____ ____ 5 3 540 2 7 ____ ____ 5 3 660 2 7 ____ ____ 5 3 780 2 7 ____ ____ 5 3 900 2 7 ____ ____ 5 3 1020 2 7 ____ ____ 5 3 1140 2 7 ____ ____ 5 3 1200 2 7 ____ ____ 5 3 1201 1 9 ____ ____ 6 1...

Страница 206: ...45 ____ ____ 1000 45 ____ ____ 1200 45 ____ ____ 1500 40 ____ ____ 1800 40 ____ ____ 2100 40 ____ ____ 2400 40 ____ ____ Table 7 46 Pulse modulation rise and fall time test Result s src A src B Rise t...

Страница 207: ...max dB Distortion Result src A src B 10 1 ____ ____ 1 20 1 ____ ____ 1 50 1 ____ ____ 1 100 1 ____ ____ 1 200 1 ____ ____ 1 500 1 ____ ____ 1 1000 1 reference 0 1 ____ ____ 2000 1 ____ ____ 1 5000 1...

Страница 208: ...ed time 3 42 Electrical hazards S 1 Error messages 3 49 External frequency standard input test 7 32 External source coupling 3 20 F Fire hazards S 2 First time use 3 5 Frequency modulation selection 3...

Страница 209: ...ain features 1 2 Memory protection 3 46 Memory recall 3 47 Memory stores 3 45 Modulation mode selection 3 35 Modulation modes 3 16 Modulation oscillator test 7 30 P Patent information 3 40 Patent prot...

Страница 210: ...INDEX Index 3 U Using the control knob 3 10 Using the steps keys 3 11 Utilities 3 27 V Ventilation 2 2 Versions options and accessories 1 10...

Страница 211: ...ght or licence other than that stipulated herein 4 4 The Licensee may make not more than two copies of the Licensed Software but not the Authoring and Language Manuals in machine readable form for ope...

Страница 212: ...Aeroflex as the intended country of use of the Licensed Software at the commencement of this Agreement 8 3 Aeroflex shall not be liable to the Licensee for any loss of use or for loss of profits or of...

Страница 213: ...45 9614 0045 Fax 45 9614 0047 SPAIN Tel 34 91 640 11 34 Fax 34 91 640 06 40 UK Burnham Tel 44 0 1628 604455 Fax 44 0 1628 662017 UK Stevenage Tel 44 0 1438 742200 Fax 44 0 1438 727601 Freephone 0800 2...

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