AR 10031732 Operating And Service Manual Download Page 30

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Model 4000TP2G4

Rev A

3.2 INSTALLATION

3.2.1

Unpacking

Upon receiving the TWTA, unpack the unit and inspect it for obvious signs of external damage. If damage is

observed, notify the carrier and contact an authorized service representative.

Save and store the shipping container in case the unit needs to be returned in the future for calibration or

repair.

CAUTION:

The RF amplifier should not be operated if there is physical damage,

missing hardware or missing panels.

3.2.2

Mounting

NOTE: Due to the weight of the unit, the removal of the amplifier from the cabinet or rack is a two-person

operation.

Disconnect power and any other cables. Remove any screws connecting the HPA to a rack or cabinet.

Carefully remove the HPA from the rack or cabinet. If slide rails are used, depress the buttons on each slide

rail to remove the unit from the rack.

CAUTION:

Never rack mount the TWTA using the front panel alone. The chassis is

likely to be damaged unless its weight is supported. Slide rails can be used

in a rack mount configuration.

For rack mount installation of multiple units, the units should be separated vertically by at least 1-3/4 inches.

This will allow room for necessary support rails, facilitate installation and removal of the units, and help

prevent overheating.

Summary of Contents for 10031732

Page 1: ...Operating and Service Manual 4000TP2G4 Model 10031732 Part Number Serial Number 160 School House Road Souderton PA 18964 215 723 8181 Fax 215 723 5688 www arworld us ...

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Page 3: ...ollowing European directives Low Voltage Directive 2014 35 EU EMC Directive 2014 30 EU Supplementary Information Safety EN 60215 1 1989 EN 61010 1 2010 EMC EN 61000 6 2 2005 EN61000 6 4 2007 Year Mark Applied 2016 I the undersigned hereby declare that the equipment specified above conforms to the above Directives and Standards Authorized officer of the company Patricia Thrasher Manager Quality Cus...

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Page 5: ...en Minimalwerte der Schirmdämpfung und Filterung in den unterschiedlichen Leistungsklassen empfohlen Hochfrequenzleistung min Schirmdämpfung 100 Watt 50 dB 101 1000 Watt 60 dB 1001 10 000 Watt 70 dB Falls andere elektrische oder elektronische Geräte gleichzeitig mit dem Gerät betrieben werden kann es zu Beeinflussungen kommen Da das Gerät zur Erzeugung von Hochfrequenzenergie dient ist es daher au...

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Page 7: ... clearance on all vented sides of the equipment to permit the airflow required for proper ventilation Do not restrict airflow into the equipment by blocking any vents or air intakes Restricting airflow can result in damage to the equipment intermittent shut downs or safety hazards Keep equipment away from extremely hot or cold temperatures to ensure that it is used within the specified operating r...

Page 8: ...na assembly may be heavy requiring two persons to lift Use caution when installing or removing unit Follow all equipment setup and lifting instructions specified in this document Ensure connectors are appropriate for intended operation Connectors are specified in the user manual and product specification sheet Do not exceed the maximum RF input level stated in the specifications Refer to the user ...

Page 9: ...von 10 2 cm 4 in auf allen belüfteten Seiten des Geräts ein um eine ausreichende Luftzirkulation zu gewährleisten Beinträchtigen Sie den Luftstrom des Geräts nicht indem Sie Lüftungsöffnungen oder den Lufteinlass blockieren Wird der Luftstrom eingeschränkt kann dies zu Schäden am Gerät periodischen Abschaltungen und anderen Gefahren führen Halten Sie das Gerät von extrem heißen oder kalten Tempera...

Page 10: ...n in diesem Dokument angegebenen Anweisungen zur Anbringung Stellen Sie sicher dass alle Anschlüsse für den beabsichtigten Betrieb geeignet sind Informationen zu den Anschlüssen erhalten Sie im Benutzerhandbuch und im Produktspezifikationsblatt Überschreiten Sie nicht den in Spezifikationen angegebenen maximalen HF Eingangspegel Informationen zum geeigneten HF Pegel erhalten Sie im Benutzerhandbuc...

Page 11: ...imitez pas le flux d air allant dans l équipement en bloquant tout évent ou entrée d air La restriction du flux d air peut endommager l équipement causer des coupures intermittentes ou des dangers pour la sécurité Tenez l équipement à l écart de températures extrêmement chaudes ou froides pour veiller à ce qu il soit utilisé dans la plage de fonctionnement indiquée Lorsque vous installez des acces...

Page 12: ...z prudent lorsque vous installez ou retirez l unité Respectez toutes les instructions concernant l installation et le levage de l équipement indiquées dans ce document Assurez vous que les connecteurs sont appropriés pour l utilisation prévue Les connecteurs sont indiqués dans le manuel d utilisation et la fiche signalétique du produit Ne dépassez pas le niveau d entrée RF maximal indiqué dans les...

Page 13: ...g is voor goede ventilatie mogelijk te maken Belemmer de luchtstroom in het apparaat niet door ventilatieopeningen of luchtinlaten te blokkeren Het belemmeren van de luchtstroom kan leiden tot schade aan het apparaat onregelmatige uitvallen of veiligheidsrisico s Houd het apparaat uit de buurt van extreem hoge of lage temperaturen om ervoor te zorgen dat het apparaat binnen het gespecificeerde wer...

Page 14: ...instellen en optillen van de apparatuur die in dit document worden vermeld Zorg ervoor dat de connectoren geschikt zijn voor de beoogde werking De connectoren worden gespecificeerd in de gebruikershandleiding en in het productspecificatieblad Overschrijd het maximale RF ingangsniveau niet dat in de specificaties is vermeld Raadpleeg de gebruikershandleiding en het productspecificatieblad om de toe...

Page 15: ...ual before you undertake to operate service or modify this machine Any variance or modification should be noted dated and initialed in the discrepant part of all manuals on hand for future reference If you have technical or editorial comments you wish to make to the manufacturer please write them on photocopies of the relevant sheets NOTE The contents of this document are the property of the manuf...

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Page 17: ...equency with Gain set to 100 apply RF drive that will provide rated power This will help indicate if the gain or power is changing and if the traveling wave tube or pre amp needs service Record the following a RF Drive Level b Forward Power c Reverse Power d Body Current Iw e Sample Port Power reading if possible 3 Remove air intake filter and clean using compressed air and or vacuum cleaner 4 Ens...

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Page 19: ...ter 6 2 3 7 Heater Power Supply Module 6 2 3 8 Grid Modulator Module 6 3 OPERATION 7 3 1 Warnings and Cautions 7 3 2 Installation 8 3 2 1 Unpacking 8 3 2 2 Mounting 8 3 2 3 Cooling Requirements 9 3 2 4 AC Line Power Connections 9 3 2 5 RF Connections 10 3 3 Front Panel Features 11 3 4 Rear panel features 12 3 5 Front Panel Display and Soft Keys 16 3 5 1 Overview 16 3 5 2 Menu Screens 18 3 5 3 Setu...

Page 20: ...FIGURES 3 1 Front Panel Features 11 3 2 Rear Panel Features 12 3 3 Menu Tree 17 TABLES 3 1 Front Panel Features 11 3 2 Rear Panel Features 12 3 3 Catalog of IEEE 488 Commands 23 3 4 Catalog of Status Codes 25 3 5 Catalog of Fault Codes 25 3 6 Catalog of System State Codes 26 3 7 Catalog of STA Response Codes 26 3 8 Catalog of STB Response Codes 27 3 9 Catalog of Heater Auto Off Time Delay Codes 27...

Page 21: ...s 50 60 Hz single phase An efficient switching power supply design provides minimum power consumption A fast regulation control loop and a high degree of filtering ensure performance within specifications over a wide range of operating conditions The amplifier is fully enclosed and the upper and lower panels of the rack mountable amplifier are interlocked to reduce the likelihood of accidental con...

Page 22: ...Model 4000TP2G4 2 Rev A 1 5 TEST DATA SHEET A Test Data Sheet for a specific unit is prepared at the time of manufacture and is included with the unit s copy of this manual ...

Page 23: ...e tube TWT microwave amplifier designed for pulse applications at low to moderate duty factors where instantaneous bandwidth and high gain are required A reliable TWT pro vides a conservative 4700 watts minimum peak RF pulse power at the amplifier output connector Stated power specifications are at the fundamental frequency The amplifier s front panel digital display shows forward and reflected av...

Page 24: ...ycle 4 maximum RF Rise and Fall 35 ns max 10 to 90 Delay 300 ns maximum from pulse input to RF 90 Pulse Width Distortion 50 ns maximum 50 points of output pulse width compared to 50 points of input pulse width Pulse Off Isolation 80 dB minimum 90 dB typi cal Pulse Input TTL level 50 ohm nominal termination NOISE POWER DENSITY pulse on Minus 57 dBm Hz maximum Minus 59 dBm Hz typical pulse off Minus...

Page 25: ...kW reflected power at maximum 8μs pulse width and 8 duty with out VSWR trip or fold back Exceeding 2kW reflected power will cause the unit to truncate pulse within 2μs For pulses beyond 8μs ex ceeding 1kW will cause the unit to truncate the pulse If exceeding 8 duty with reflected power exceeding 1kW the amplifier will trun cate the pulse within 2μs The amplifier will continue to truncate pulses u...

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Page 27: ...nector on the solid state pre amp The solid state pre amp s output drives the RF input of the TWT The RF output of the TWT is a type N coaxial The output is directed through a high power coupler E20154 000 which provides forward and reverse sample ports before directing the RF output through the rear panel The reverse port on the directional coupler is connected to a crystal detector whose output ...

Page 28: ... linear regulator for the helix voltage is also included in this module 2 3 5 Diode Cap Assembly This module contains the high voltage transformer and the high voltage rectifiers 2 3 6 High Voltage Filter This module contains the high voltage capacitors for the cathode and the collector voltages This module filters ripple from the high voltage rectifiers monitors the cathode and collector voltages...

Page 29: ...ges present in microwave tube amplifiers in general and with this equipment in particular Never handle the TWT leads or the high voltage connectors unless the unit has been unplugged and it has been positively established that the high voltage filter capacitors have been discharged to a known safe level WARNING Safety Ground Improper grounding of this equipment can result in electric shock The TWT...

Page 30: ...f the amplifier from the cabinet or rack is a two person operation Disconnect power and any other cables Remove any screws connecting the HPA to a rack or cabinet Carefully remove the HPA from the rack or cabinet If slide rails are used depress the buttons on each slide rail to remove the unit from the rack CAUTION Never rack mount the TWTA using the front panel alone The chassis is likely to be d...

Page 31: ...ack to the TWTA Use supplemental fans as necessary to cool these components directing this heat away from the rear of the TWTA Failure to provide adequate cooling can result in the unit shutting down from overtemperature conditions The TWTA dissipates approximately 1 5 2 5 kilowatts when in the Operate mode 3 2 4 AC Line Power Connections AC line power connection to the Power Supply Chassis is mad...

Page 32: ... is operated without a load The VSWR detection circuit is provided to protect the tube from progressive failure or mismatch of the output load it should not be relied on for protection from the absence of a load CAUTION If an external isolator is installed at the output of the TWTA either the isolator should have a load capable of dissipating the full output of the TWTA or the isolator load should...

Page 33: ...nctions 6 Standby Pushbutton turns high voltage and heater off 7 Exit Pushbutton terminate various menu selection routines and returns to the previous menu level 8 Emergency Switch Cover Provides access to emergency bypass switches which permit manual control of the amplifier 9 Operate Pushbutton turns on high voltage when all faults and heater time delay have cleared 10 Adjust Rotary knob used as...

Page 34: ...Input RF Input Type N female 3 RF Output RF Output Type N female 4 External Interlock Connector for remote interlock and inhibit functions D Sub 15 pin female 5 IEEE 488 GPIB Remote Control Connector 6 Air Intake Convection cooling inlet 7 Air Exhaust Convection cooling exhaust 8 AC Input Circular AC Input connector 190 260VAC 9 Safety Ground Internal and External Safety Ground Stud 10 Pulse Input...

Page 35: ... that screen will be displayed Use the ADJUST knob to scroll through the message The EXIT key will return you to the screen from which the help screen was called Setup Screens From MENU 2 S1 labeled SETUP selects the first of several setup screens SETUP 1 This allows the user to manually shut off the heater power supply and put the HPA into Sleep Mode Pressing S1 SET toggles between On and OFF Pre...

Page 36: ... Control module A16485 MORE brings up WARNINGS 4 which allows input of the maximum cabinet temperature Entering this parameter is performed as above MORE brings up WARNINGS 5 identical to the previous screen except that it deals with the maximum TWT collector block temperature If either parameter exceeds the setpoint the audible alarm will sound every 30 seconds if configured and a warning message...

Page 37: ...turn to operation is provided for selected faults due to influences external to the TWTA Factory Service Screens A number of screens intended for factory service and calibration are behind passwords and are not accessible to the user System Malfunction Screens A number of screens are reserved to display error messages These messages are not normally seen and indicate a malfunction of the TWTA Syst...

Page 38: ...function is displayed on the bottom line of the display Figure 3 2 next page provides a roadmap for navigating between the screens S1 S2 S3 S4 Soft Keys S1 S4 The current function of each soft key is displayed in the screen area immediately above it S1 Entry to Setup screens 1 6 from Menu 2 Entry to Warning screens 1 6 from Menu 3 S2 Entry to Faults screen from Menu 4 S3 Entry to contextual help s...

Page 39: ...Model 4000TP2G4 Rev A 17 Figure 3 3 Menu Tree ...

Page 40: ...status if a latched fault exists MENU 1 is displayed with the system shutdown message MENU 2 System Hours Console hours active when main power circuit breaker is on represents TWT filament hours Operate hours active when HV is on MENU 3 Power supply temperature C or F Cabinet temperature C or F TWT baseplate temperature C or F MENU 4 Heater voltage Ef Heater current If Collector voltage Eb Cathode...

Page 41: ...re parameters between Fahrenheit and Celsius degrees Pressing S1 SET changes the selection The setting displayed when the screen is exited will be retained Pressing MORE again brings up the next screen SETUP 4 SETUP 4 allows a choice of displaying forward power in stripchart form or in dBm or watts Pressing MORE again brings up the next screen SETUP 5 SETUP 5 allows a choice of displaying reflecte...

Page 42: ...rings up the next screen Warnings 2 WARNINGS 2 allows the under forward power set point to be entered Adjusting this to the minimum value causes OFF to be selected disabling this alarm Pressing MORE again brings up the next screen Warnings 3 WARNINGS 3 allows for the maximum reflected power level to be set Note that these are warning levels at which the beep sounds the actual maximum reflected pow...

Page 43: ...on will be enabled once again Factory Service Screens A number of screens intended for factory service and calibration are behind passwords and are not accessible to the user System Malfunction Screens A number of screens are reserved to display error messages These messages are not normally seen and indicate a malfunction of the TWTA System malfunction messages include the following Database corr...

Page 44: ...al The values of these parameters at the time the TWTA left the factory are logged on the test data sheet Set Gain to 0 Push RF ON check the helix current Iw The helix current should be close to the nominal value for no RF drive The value of this parameter at the time the TWTA left the factory is logged on the test data sheet Push S4 MORE or EXIT to get to Menu 1 Set the TWTA gain to maximum Adjus...

Page 45: ... RfHr RDEK1 Returns cathode voltage HPA1 KV Ek RDEK2 Returns cathode voltage HPA2 KV Ek RDEB1 Returns collector voltage HPA1 KV Eb RDEB2 Returns collector voltage HPA2 KV Eb RDEG1 Return grid voltage HPA1 V Eg RDEG2 Return grid voltage HPA2 V Eg RDEF1 Returns heater voltage HPA1 V Ef RDEF2 Returns heater voltage HPA2 V Ef RDIF1 Returns heater current HPA1 A If RDIF2 Returns heater current HPA2 A I...

Page 46: ...power warning setpoint dBm dBm Pohi dBm SPOHID Sets over forward power warning setpoint dBm dBm RDPOLOD Returns under forward power warning setpoint dBm dBm Polo dBm SPOLOD Sets under forward power warning setpoint dBm dBm RDPOHIW Returns over forward power warning setpoint W watts Pohi W SPOHIW Sets over forward power warning setpoint W watts RDPOLOW Returns under forward power warning setpoint W...

Page 47: ...ommand not allowed 901 Assert error invalid table argument 902 Assert error invalid table argument Please call a service representative if you observe this error Table 3 5 Catalog of Fault Codes The RDFLT command causes the TWTA to return a string in the form flt code where code is an ASCII number whose meaning is given below Fault Code Meaning Fault Code Meaning 0 No fault 72 FIL NOT READY2 40 FI...

Page 48: ...pired 5 Under forward power warning 6 Foldback active 7 MSB Inhibit mode x bit Meaning 8 LSB External inhibit 9 Interlock open 10 not used 11 MSB not used w bit Meaning 12 LSB not used 13 Sleep Mode Active 14 HPA 1 power supply off or failed 15 MSB HPA 2 power supply off or failed Table 3 7 STA Response Codes The command STA causes the TWTA to send a string indicative of the current system state S...

Page 49: ... auto off time delay 3 2 0 hour heater auto off time delay 4 2 5 hour heater auto off time delay 5 3 0 hour heater auto off time delay Command syntax is in this form command mnemonic parameter carriage return where command mnemonic consists of one of any valid command found in Table 3 3 parameter as applicable consists of one ASCII space character followed by a number carriage return consists of a...

Page 50: ... issuing a command since the status could have been changed by a fault condition of the amplifier or by operator activation of the amplifier Periodic checking of the status is also recommended 3 8 RF OPERATION NOTE If the user does not have a 5VDC max TTL signal pulse connected to the pulse input BNC connector there will be no RF output The RF chassis is provided with a BNC connector which must be...

Page 51: ...ate Turn on When selecting the Operate mode when high voltage is first turned on there may be some internal TWT arcing which can cause protective circuits to deselect the Operate mode thereby returning the unit to the Standby mode There may be a report of body over current fault In either case if there is no other contraindication the Operate mode may be selected again This procedure may be repeat...

Page 52: ... recommended is to repeat the selection of the Operate mode until the unit remains in Operate It has been found that most of the faults that can be cleared by this method will be cleared within 25 attempts to enter the Operate mode Once the tube is operating normally gas will continue to evolve at a slow enough rate that the TWTA will not fault This happens because the gas in the tube will interac...

Page 53: ...tors unless it has been positively established that the high voltage filter capacitors have been discharged to a known safe level CAUTION A malfunctioning power supply can cause damage to the TWT If you are troubleshooting the TWTA remove the TWT and substitute suitable loads to prevent damage to the TWT 4 2 UNAUTHORIZED REPAIRS CAUTION Unauthorized repairs or modification of this product during t...

Page 54: ...is off check for loose wires components or fasteners 4 Reassemble in reverse order Reconnect rear panel cables CAUTION Be especially careful with type SMA RF connectors which are fragile and easily damaged when incorrectly aligned during the assembly process 4 4 TROUBLESHOOTING Symptom Possible cause TWT or power supply overtemperature Air inlet filter s dirty Collector heat sink dirty Inadequate ...

Page 55: ...c diagrams 4 5 NON REPAIRABLE MODULES The following modules are encapsulated and not repairable Contact an authorized service representative if replacement modules are needed A27824 100 Heater Power Supply Module A30594 001 Grid Modulator Assembly A33176 001 High Voltage Filter Assembly A33173 000 High Voltage Diode Cap Assembly A33090 001 Capacitor Bank 4 6 RECOMMENDED SPARE PARTS A27824 100 Heat...

Page 56: ...Model 4000TP2G4 34 Rev A ...

Page 57: ...o must troubleshoot and repair the TWTA in the field Such repairs are typically limited to replacement of modules or major components For this reason only documentation pertaining to the highest levels of the system and to system control logic is included 5 1 SCHEMATICS 10 23050 085 10 25444 001 10 25450 000 10 38004 100 HPA Logic and Control A23050 085 HPA Interface A25444 001 CPU Board A25450 00...

Page 58: ...Model 4000TP2G4 36 Rev A ...

Page 59: ...ARON D McCLURE 1040 1041 DIM F 80 1042 DIM A 80 1050 CLEAR SCREEN 1060 INPUT INPUT COMMAND TO SEND TO POWER SUPPLY EXIT TO QUIT A 1070 IF A EXIT THEN 1130 1080 OUTPUT 701 A 1090 IF A 1 2 RD THEN GOTO 1060 1095 IF A 1 1 THEN GOTO 1100 1100 ENTER 701 F 1110 PRINT OUTPUT FROM COMMAND A IS F 1120 GOTO 1060 1130 CLEAR SCREEN 1140 END ...

Page 60: ...Model 4000TP2G4 38 Rev A ...

Page 61: ... cover If the security label is removed and or cut the warranty of the module will be voided Vacuum tubes in the L series amplifiers traveling wave tubes in TWT amplifiers and power heads will be free from defects in material and workmanship for a period of one 1 year Contact AR RF Microwave Instrumentation for warranty information regarding items not listed Seller s sole responsibility in fulfill...

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