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AR 10046836 Скачать руководство пользователя страница 50

Model 500W1000C

30

Rev A

3.4.3

A17 ALC Board (Schematic #10023927)

This section describes the operation of the level control board. The level control board performs the following

functions:

•

Provides automatic level control of the amplifier’s output when the amplifier is placed in the ALC mode.

•

Limits RF input level to the amplifier and turns on the audio alarm when forward or reflected power levels

exceed specified levels.

•

Drives forward and reflected indicators on the front panel display.

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Содержание 10046836

Страница 1: ...Operating and Service Manual 500W1000C Model 10046836 Part Number Serial Number 160 School House Road Souderton PA 18964 215 723 8181 Fax 866 859 0582 www arworld us...

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Страница 3: ...y Requirements for Electrical Equipment for Measurement Control and Laboratory Use Part 1 General Requirements UL 61010 1 Issued 2012 05 11 Ed 3 Safety Requirements for Electrical Equipment for Measur...

Страница 4: ......

Страница 5: ...n folgenden Minimalwerte der Schirmd mpfung und Filterung in den unterschiedlichen Leistungsklassen empfohlen Hochfrequenzleistung min Schirmd mpfung 100 Watt 50 dB 101 1000 Watt 60 dB 1001 10 000 Wat...

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Страница 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...

Страница 8: ...a 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...

Страница 9: ...von 10 2 cm 4 in auf allen bel fteten Seiten des Ger ts ein um eine ausreichende Luftzirkulation zu gew hrleisten Beintr chtigen Sie den Luftstrom des Ger ts nicht indem Sie L ftungs ffnungen oder de...

Страница 10: ...allen in diesem Dokument angegebenen Anweisungen zur Anbringung Stellen Sie sicher dass alle Anschl sse f r den beabsichtigten Betrieb geeignet sind Informationen zu den Anschl ssen erhalten Sie im Be...

Страница 11: ...tilation Ne limitez pas le flux d air allant dans l quipement en bloquant tout vent ou entr e d air La restriction du flux d air peut endommager l quipement causer des coupures intermittentes ou des d...

Страница 12: ...dent lorsque vous installez ou retirez l unit Respectez toutes les instructions concernant l installation et le levage de l quipement indiqu es dans ce document Assurez vous que les connecteurs sont a...

Страница 13: ...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 a...

Страница 14: ...nstellen 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 gebruikershand...

Страница 15: ...t 12 2 4 2 RF Output 12 2 4 3 IEEE 488 USB and RS 232 Interfaces 12 2 4 4 Safety Interlock Connector 13 2 5 Amplifier Operation 13 2 5 1 Local Operation 13 2 6 Remote OPERATION 13 2 6 1 IEEE 488 GPIB...

Страница 16: ...ation 31 4 2 Disassembly Procedure 31 4 3 Troubleshooting 32 4 3 1 General Reading Faults 33 4 3 2 The Unit Cannot Be Operated Remotely 33 4 3 3 Thermal Fault Schematic Diagram No 10045618 33 4 3 4 In...

Страница 17: ...500W1000C iii TABLES 2 1 RS 232 Port Settings 14 2 2 RS 232 DCE Port Pinout Diagram DB 9 Female 14 2 3 Fiber Optic Serial Port Settings 15 2 4 Relationship between DCP Controls and Remote Communicatio...

Страница 18: ......

Страница 19: ...fier s RF Gain during CW mode operation and provides graphical displays of the amplifier s Forward and Reflected power levels RF output level protection A General Purpose Interface Bus GPIB IEEE 488 2...

Страница 20: ...ntrol panel monitors all fault signals stores and displays any that are invoked and asserts the required action 1 5 INSTALLATION Before proceeding thoroughly inspect the amplifier for signs of physica...

Страница 21: ...taneous bandwidth high gain and linearity are re quired Available in a stylish contemporary cabinet for benchtop use or with cabinet re moved for rack mounting The Model 500W1000C when used with a swe...

Страница 22: ...m 6 dB typical HARMONIC DISTORTION Minus 20 dBc maximum at 425 watts minus 30 dBc typical at 425 watts SPURIOUS Minus 73 dBc typical PRIMARY POWER 100 240 VAC 50 60Hz 1800 watts CONNECTORS RF Input N...

Страница 23: ...Page 3 500W1000C 500 watts CW 80MHz 1000MHz Graphs...

Страница 24: ...Page 4 500W1000C 500 watts CW 80MHz 1000MHz Graphs...

Страница 25: ...Products call 215 723 8181 For an applications engineer call 800 933 8181 Direct to Service call 215 723 0275 or email service arworld us For Faxing Orders 866 859 0582 Orders Only Please info arworld...

Страница 26: ......

Страница 27: ...0W1000C s output to its input either through direct connection or parasitic feedback paths will cause oscillations that may permanently damage the unit s input transistors The 500W1000C Amplifier is p...

Страница 28: ...lay is active as long as the main power circuit breaker of the amplifier power entry module is on Figure 2 1 Digital Control Panel DCP Features Item Title Function 1 INHIBIT LOCAL REMOTE Keylock Switc...

Страница 29: ...F In the RF ON state RF output is enabled according to control settings and amplifier RF input Main cooling fans will operate In the RF OFF state there will be no RF output 2 2 5 RESET Function The RE...

Страница 30: ...an ADJUST knob This knob is used to adjust many of the variables shown on the graphic touch display The graphic touch display is active and illuminated whenever AC power is supplied to the unit and t...

Страница 31: ...Model 500W1000C Rev A 11 Figure 2 3 Touch Panel Display Menu Map Values shown on screens are for illustration only...

Страница 32: ...plifier It should be connected to a RF signal generator or sweep generator 2 4 2 RF Output This Type N connector is the RF output of the amplifier CAUTION Do not connect or disconnect any loads or cab...

Страница 33: ...to a device such as a personal computer All ports are active at all times however only one port may be used at a time Communicating through two or more ports at one time will cause data collisions an...

Страница 34: ...onds At this time the internal buffer is cleared and a TIMEOUT_ERROR message followed by a Line Feed character is sent out from this port The baud rate for the RS 232 port is user selectable from the...

Страница 35: ...ally isolate the controlling PC from the amplifier This can be useful in an environment where RF Microwave energy could be coupled onto a connection to one of the wired communications ports and fed ba...

Страница 36: ...tion The Ethernet port allows remote control through a Transmission Control Protocol TCP data channel All commands and queries through this port must be terminated with a Line Feed character By defaul...

Страница 37: ...ent of application programs requires an understanding of the operation of the amplifier as well as the intended application An application program on the computer controller should issue only one char...

Страница 38: ...g command POWER OFF LF 2 6 6 2 RF On Off This command controls the RF on off state of the amplifier Syntax RF x Parameters State x OFF power off ON power on Response Format None No query for this comm...

Страница 39: ...send the following command MODE MANUAL LF Not available on all amplifier models 2 6 6 5 Level Adjust This command sets the RF Gain ALC Detector Gain ALC Threshold and ALC Response Time Syntax LEVEL x...

Страница 40: ...racter Response Format f m n LF Where f manufacturer m model designation n firmware revision Example To get the identity of the amplifier send the following command IDN LF Response AR RF MICROWAVE INS...

Страница 41: ...pace GAIN x THRES x RESP y LF Value x For RF Gain Detector Gain and ALC Threshold 0 Minimum 100 Maximum Value y For Response Time 0 Minimum 7 Maximum Response Time Setting Time mS 0 1 1 5 2 10 3 30 4...

Страница 42: ...be found in the table below NOTE Bits labeled NOT USED may be read as a bit state of 1 or 0 BIT STATE BIT POSITION BIT DESCRIPTION 0 1 NOTES x 0 PULSE STATUS OFF PULSE 1 NOT USED 2 NOT USED 3 REMOTE...

Страница 43: ...zeros are read as spaces Units are Watts Example To find out the forward power send the following query FPOW LF Response FPOW space space space 54 LF 54 Watts of forward power 2 6 6 11 Reverse Power...

Страница 44: ...space 00xx Where xx 00 to 1A Hexadecimal xx Dec Description xx Dec Description 00 00 No Fault 0E 14 PS2 Thermal 01 01 PS3 0F 15 Amp A13 02 02 Interlock 10 16 Amp A12 03 03 PS1 11 17 Amp A11 04 04 PS2...

Страница 45: ...wing query OH LF Response OH space space space space 37 LF The system has spent 37 Hours in an RF On state 2 6 6 15 Operating Hours Power On Query to get the Power On operating hours Syntax OHP Parame...

Страница 46: ...EXT Not available on all models NOTES 1 Use the command DEFAULT FACTORY to reset all applicable settings back to their factory defaults 2 All applicable defaults can be queried except DEFAULT FACTORY...

Страница 47: ...the A3 Two Watt Amplifier Assembly 3 2 1 1 A1 Pre Amplifier PWB Assembly Schematic 10033908 The Pre Amplifier PWB Assembly consists of a stage of gain U1 a variable attenuator U2 a resistive splitter...

Страница 48: ...gh Q1 is monitored by U2 The output of U2 is fed to an op amp U5 which has a reference voltage on the non inverting input and it compares the output of U2 to the reference voltage and generates an err...

Страница 49: ...WER SUPPLIES PS1 PS2 AND PS3 PS1 is a multiple output supply The main 24V at 7 5A supplies voltage to cooling fans B1 through B5 The 15V at 1A is supplied to the A1 Pre Amp A2 Driver as well as Final...

Страница 50: ...ol board performs the following functions Provides automatic level control of the amplifier s output when the amplifier is placed in the ALC mode Limits RF input level to the amplifier and turns on th...

Страница 51: ...that when failure is caused by breakdown of any of the components in the signal circuits the amplifier be returned to the factory for part replacement and amplifier realignment Shipping instructions a...

Страница 52: ...charge ESD approved workstations by individuals who are familiar with the handling of microwave GaN HEMTs and other ESD sensitive devices Troubleshooting the Model 500W1000C in a logical manner can sp...

Страница 53: ...es the output power from the 500W1000C and the power reflected back to it If the reflected power is very high with respect to the forward power this could indicate that the output coax cable is defect...

Страница 54: ...ont panel by using the RESET switch 4 If the Interlock Fault will not clear check for continuity in the External Interlock Circuit Pin 1 to Pin 8 in the connector which mate with P1 in the rear panel...

Страница 55: ...the fault cannot be cleared with no RF input drive power then there is a malfunction in the ALC board or associated circuit 4 3 8 Low or No Power Output DC Tests Schematic Diagram No 10045618 All ind...

Страница 56: ...Test Schematic Diagram No 10045618 NOTE The DC Tests specified in Section 4 3 8 should be completed before conducting the RF tests specified in the following sections 1 The Model 500W1000C s typical...

Страница 57: ...ables are removed they must be reinstalled in the same locations from which they were removed Replacement coaxial cable assemblies must the same lengths as the original ones NOTE If the original gain...

Страница 58: ...e Input A5 Front Panel RF Output 3 If the gain is slightly low i e several dB below typical try disconnecting the inputs from the A6 A13 Final Module one at a time then reconnect them Note the differe...

Страница 59: ...n loss Figure 4 5 Typical Eight Way Splitter Insertion Loss 6 A typical 8 Way Combiner Insertion Loss and Combined Port Return Loss is shown in Figures 4 6 and 4 7 The unused ports must be terminated...

Страница 60: ...4 8 Typical A2 Driver Module Response NOTE The A1 Pre Amplifier s response may differ considerably particularly in flatness from the typical responses shown in the Figure 4 8 8 The typical response fo...

Страница 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...

Страница 62: ......

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