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AR 350S1G6A Series Operating And Service Manual Download Page 48

Model 350S1G6A 

 

30 

Rev C 

3.4  CONTROL SYSTEM 

3.4.1 

A60A1, A60A3 Display Assembly, 4.3” LCD (Schematics 

10029679, 10030013) 

The  A60  Control Panel  Assembly  consists of two 16-bit microcontrollers and about nine other ICs that 

monitor and indicate the status of the amplifier.  Power is supplied using only a single 5-volt power supply.  

The board offers the following: 

Feature 

Quantity 

Open drain outputs 

4 

Digital outputs 

14 (8+6) 

Digital inputs (5-volt tolerant) 

24 

Analog outputs 

2 

Mixed signal inputs 

4 

2-channel encoder input 

1 

Inputs for a keypad 

6 

Display connectors 

1 

Serial communication jacks 

2 

 

3.4.2 

A61 Interface Board (Schematic 10020073) 

3.4.3 

A66 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 when forward or reflected power levels exceed specified levels. 

•

 

Drives forward and reflected indicators on the front panel display. 

 

Summary of Contents for 350S1G6A Series

Page 1: ...EXPORT CONTROLLED DATA These commodities technology or software are controlled for export in accordance with the U S Export Administration Regulations Diversion contrary to U S law is prohibited 160 School House Road Souderton PA 18964 215 723 8181 Fax 866 859 0582 www arworld us ...

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Page 3: ...ty 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 Measurement Control and Laboratory Use Part 1 General Requirements CAN CSA C22 2 61010 1 Issued 2012 05 11 Ed 3 Safety Requirements for Electrical Equipment for Measurement Control and Laboratory Use Part ...

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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: ...2 4 1 RF Input 12 2 4 2 RF Output 12 2 4 3 IEEE 488 USB and RS 232 Interfaces 12 2 4 4 Safety Interlock Connector 12 2 5 Amplifier Operation 13 2 5 1 Local Operation 13 2 6 Remote Operation 13 2 6 1 IEEE 488 GPIB Communication 13 2 6 1 1 Setting the IEEE 488 GPIB Address 14 2 6 2 RS 232 Communication 14 2 6 3 Fiber Optic Serial Communication 15 2 6 4 USB Communication 15 2 6 5 Ethernet Communicati...

Page 16: ... A66 ALC Board Schematic 10023927 30 4 MAINTENANCE 31 4 1 General Maintenance Information 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 10047656 33 4 3 4 Interlock Fault Schematic 10047656 34 4 3 4 1 INTERLOCK FAULT 34 4 3 4 2 AC INTERLOCK FAULT 34 4 3 5 Power Supply Faults Schemati...

Page 17: ...esponse 40 4 8 Typical A1 Preamplifier Response 40 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 Communications 17 ...

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Page 19: ... 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 interface for remote control of the amplifier s operating functions RS232 serial communications including both wire and fiber optic ports for remote control USB Communication port for remote control Ethernet Communicatio...

Page 20: ...lifier for signs of physical damage that may have been incurred during shipment and completely read the following installation and operating instructions paying special attention to all CAUTION notes 1 5 1 Location Select an operating location that will permit air to circulate freely around the amplifier s cabinet The Model 350S1G6A utilizes air cooling and should be located where the normal flow ...

Page 21: ...uctor Green Hex Head Screw Equipment grounding conductor White Screw Grounded circuit conductor Neutral Y Brass Black Screw Ungrounded circuit conductor Line X Tighten terminal screws to 18 lb in 2 1 N m of torque Tighten assembly screws to 10 lb in 1 1 N m of torque Tighten cord clamp screws alternately to 16 20 in 1 8 2 3 N m of torque ...

Page 22: ...Model 350S1G6A 4 Rev C ...

Page 23: ... cooled broadband completely solid state amplifier designed for applications where instantaneous bandwidth high gain and linearity are required The Model 350S1G6A when used with a sweep generator will pro vide a minimum of 350 watts of RF power The Model 350S1G6A is equipped with a Digi tal Control Panel DCP which provides both local and remote control of the amplifier The DCP uses a color LCD tou...

Page 24: ...le phase 3600 watts CONNECTORS RF Input Type N female rear RF Output Type 7 16 DIN female rear Safety intlk 15 pin female subminiature D rear Remote computer interface IEEE 488 GPIB RS 232 connector rear Remote Computer Interface Fiber Optic ST Conn Tx RS 232 Rx USB 2 0 Type B Ethernet RJ 45 IEEE 488 GPIB INTERFACE RS 232 Allows con trol and monitoring of all front panel controls except keylock po...

Page 25: ... rated input of 1mW However signal levels higher than 20mW or transients with high peak voltages can damage the amplifier Also accidental connection of the Model 350S1G6A 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 350S1G6A Amplifier is protected from input overdrive by an au...

Page 26: ...hen power is on The graphic display 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 Switch 3 position key removal in INHIBIT position only 2 POWER POWER control with indicator LED 3 DISPLAY Touch Screen Numerous parameter values and fault messages 4 ADJUST ...

Page 27: ...e 2 2 Rear Panel Features Item Title Function 1 RF INPUT rear connector versions Type N female connector 2 RF OUTPUT Type 7 16 female connector 3 Safety Interlock Type 15 pin sub D 4 IEEE 488 Remote Interface 5 RS 232 Remote Interface 6 USB Remote Interface 7 Fiber Optic Serial Remote Interface 8 Ethernet Remote Interface ...

Page 28: ...the display screen In some cases these buttons can also be found in other areas of the screen From the MAIN MENU the user can access the RF ON OFF button The RF ON OFF button causes the power amplifier sections to produce RF output power from the output connector based on the various settings and the input level to the amplifier To the far right is an ADJUST knob This knob is used to adjust many o...

Page 29: ...Model 350S1G6A Rev C 11 Figure 2 3 Touch Panel Display Menu Map Values shown on screens are for illustration only ...

Page 30: ...or disconnect any loads or cables from the amplifier s RF Output when the amplifier is in the Operate mode Dangerous voltages that could cause serious injury to the user exist at the RF Output when the amplifier is under power 2 4 3 IEEE 488 USB and RS 232 Interfaces The Model 350S1G6A s remote interfaces allow remote control via a computer of all amplifier functions except for the Keylock Switch ...

Page 31: ...ort may be used at a time Communicating through two or more ports at one time will cause data collisions and lost commands or queries The Keylock switch on the front panel allows the amplifier to be controlled using the remote communications ports the front panel controls or neither depending on its position All remote queries will work in any switch position All remote commands will only work whe...

Page 32: ...conds 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 RS 232 Fiber Optic Serial Baud Rate selection screen To get there from the Main Menu touch the User menu button followed by the I O menu button and finally the Serial menu button A thin black outline...

Page 33: ...e optimized to work with light at a wavelength of 820nm For more detailed specifications on this port consult the Avago HFBR series datasheet found at www avagotech com A glass multi mode fiber optic cable of 200um is recommended however fiber optic cable as small as 50um can be used The connector type for this port is ST This port can be used in conjunction with either an AR model IF7000 RS 232 t...

Page 34: ...tronix com For assistance using this utility please consult the utilities embedded help file The DeviceInstallerTM utility will scan the network and find all connected Lantronix Ethernet devices This list of found devices will include any connected AR Ethernet devices By selecting one of the connected devices from the list its IP address and subnet mask can be changed along with a number of other ...

Page 35: ...e status just prior to issuing a command since the status could have been changed by a fault condition or by operator actions Variables represented by wild card characters i e x y z etc do not indicate or delimit the number of characters actually specified Table 2 4 Relationship between DCP Controls and Remote Communication AC Power and Circuit Breaker Power Keylock Switch Remote Communication On ...

Page 36: ... all faults if possible Syntax RESET Parameters None Response Format None No query for this command Example To clear any faults send the following command RESET LF 2 6 6 4 Mode Select This command sets the ALC mode of the amplifier Syntax MODE x Parameters Mode x MANUAL Set to Manual mode PULSE Set to Pulse mode ALC space INT Set to ALC Internal mode ALC space EXT Set to ALC External mode Response...

Page 37: ... RF Gain ALC Detector Gain and ALC Threshold 0 Minimum 100 Maximum For ALC Response Time 0 Minimum 7 Maximum Response Time Setting Time mS 0 1 1 5 2 10 3 30 4 100 5 1000 6 3000 7 3000 Response Format None No query for this command Example To set the RF Gain to minimum send the following command LEVEL GAIN0 LF To set the RF Gain to 50 send the following command LEVEL GAIN50 LF To set the ALC Respon...

Page 38: ...identity of the amplifier send the following command IDN LF Response AR RF MICROWAVE INST MODEL 1 0 LF 2 6 6 7 IO Board Firmware Revision Query to get the firmware revision of the I O Board Syntax IOB Parameters None Query only always requires a character Response Format INTERFACE_BOARD_SW_REVx LF Where x firmware revision Example To get the firmware rev of the I O Board send the following command...

Page 39: ...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 4 100 5 1000 6 3000 7 3000 Example To get the machine state send the following command MSB LF Response RF space GAIN 100 DT space GAIN 50 THRES 75 RESP 1 LF RF gain is 100 Detector Gain is 50 ALC Thresh...

Page 40: ...bit positions can 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 NOT USED 1 NOT USED 2 NOT USED 3 REMOTE CONTROL DISABLED ENABLED Response to key switch position y 0 POWER STATUS OFF POWER ON 1 STANDBY STATUS OFF STANDBY Also known as RF OFF 2 OPERATE STATUS OFF OPERATE Also known as RF ON 3 FAULT STA...

Page 41: ...g 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 Query to get the reverse power Syntax RPOW Parameters None Response Format RPOW x LF Where x 0 to 99999 Values are corrected and linearized They can be up to five digits in length Leading zeros are r...

Page 42: ...92 Amp A52 07 7 Thermal Middle R2 34 52 Amp A44 5D 93 Amp A39 08 8 Thermal Middle L1 35 53 Amp A43 5E 94 Amp A38 0B 11 PS4 36 54 Amp A42 5F 95 Amp A37 0B 12 PS3 37 55 Amp A41 60 96 Amp A36 0D 13 PS2 38 56 Amp A40 61 97 Amp A35 10 16 PS4 Thermal 39 57 Amp A27 62 98 Amp A34 11 17 PS3 Thermal 3A 58 Amp A26 63 99 Amp A33 13 19 Amp A14 3B 59 Amp A25 64 100 Amp A32 15 21 Amp A5 3C 60 Amp A24 65 101 Amp ...

Page 43: ...owing 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 Parameters None Response Format OHP x LF Where x 0 to 100000 Units are Hours Values can be up to six digits in length Leading zeros are read as spaces Example To find out the Power On operating hours send ...

Page 44: ...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 by adding a character in place of the setting parameter 3 If the ALC Lockout Feature not available on all models is engaged the default ALC values set with this command will not be used Example 1 To s...

Page 45: ...te RF input signals above 0 dBm by utilizing internal voltages U2 is a broadband GaAs Monolithic Microwave Integrated Circuit MMIC and is the first stage of gain in the amplifier The output of U2 is fed to the input of the Wilkinson Two Way Splitter The Wilkinson Two Way Splitter splits the signal into two paths One output is fed to the input of the A2 Driver Amp and the other output is fed to a d...

Page 46: ...n construction and performance to the driver amplifiers described in Section 3 2 2 3 2 4 A3 Two Way Splitter The Two Way Splitter is a multi section broadband Wilkinson splitter The input signal is split into two equal amplitude equal phase signals The amplitude of each signal is 3 3 5dB below the input signal when both outputs are terminated into 50Ω loads 3 2 5 A6 A7 A16 A18 A19 A20 A21 A23 Four...

Page 47: ...t ranges 50 60 Hz PS2 supplies 24 VDC to Fan Assemblies B1 B4 B7 B14 and B17 B20 PS3 and PS4 supply 25 7 VDC at 67 amps PS2 and PS3 are switching power supplies that automatically set the AC input circuits to the correct connections for the line voltage 200 260 VAC 50 60 Hz PS3 and PS4 supply 25 7 VDC to quad amplifiers A2 A8 A10 A13 A15 A24 A27 A32 A47 and A52 A55 to provide the drain voltage for...

Page 48: ... volt tolerant 24 Analog outputs 2 Mixed signal inputs 4 2 channel encoder input 1 Inputs for a keypad 6 Display connectors 1 Serial communication jacks 2 3 4 2 A61 Interface Board Schematic 10020073 3 4 3 A66 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 ...

Page 49: ... recommended 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 are as follows To return an item contact AR Customer Service for an RMA number and shipping instructions Returns from outside the United States are not permitted without prior authorizatio...

Page 50: ...ic Discharge ESD approved workstations by individuals who are familiar with the handling of microwave GaN HEMTs and other ESD sensitive devices Troubleshooting the Model 350S1G6A in a logical manner can speed the solution to a problem The settings of potentiometers pots capacitors caps or other variables should not be disturbed until other problems have been eliminated Comparing the measured DC vo...

Page 51: ...x cable is defective or that the load being driven has a high VSWR 4 3 2 The Unit Cannot Be Operated Remotely 1 Verify that the front panel keyswitch is set to the REMOTE position 2 Verify that the unit operates locally by setting the keyswitch to the LOCAL position if the unit does not operate locally see 4 3 1 of this manual 3 Check the position of the ADDRESS switch assembly this assembly can b...

Page 52: ...r check for continuity in the External Interlock Circuit Pin 1 to Pin 8 in the connector which mate with P32 in the rear panel 5 Check the voltage on A60 J5 pin 31 it should be 0 1V 6 If the voltage on A60 J5 pin 31 is high check the interlock line to ground 4 3 4 2 AC INTERLOCK FAULT 1 In the event of an AC Interlock Fault the front panel display should read AC INTERLOCK FAULT 2 Check to see if i...

Page 53: ...fault can be cleared If 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 10047656 All indicators on the Model 350S1G6A are normal the front panel display reads RF On and the cooling fans are operating 1 Check the position of the RF Gain control is it set to maximum gain 2 Chec...

Page 54: ...should be 55 4 dBm 0 dBm Input should be 59 20 dBm Input dBm NOTE If the overall gain is low the amplifier chain can be separated at the input of A3 Two Way Splitter Figure 4 1 Typical Response at 0 dBm Input and 20 dBm Input Phase matching must be maintained from the input of the A3 Two Way Splitter to the inputs of both A56 and A57 Twelve Way Combiners if coaxial cables are removed they must be ...

Page 55: ...ld be terminated into a 50Ω load Figure 4 2 Typical Response Input A3 to Quad Final Module RF Output If the response is normal see Step 8 If the response is abnormal perform the following tests 3 If the gain is slightly low i e several dB below typical repeat step 2 above in each module bank Note the difference in response when measuring the Quad Amps if any Quad Amp causes less of a change in gai...

Page 56: ...ed port must be terminated when checking the insertion loss 30 20 10 0 10 20 30 40 50 9 5 9 0 8 5 8 0 7 5 7 0 6 5 6 0 5 5 0 5 1 0 1 5 2 0 2 5 3 0 3 5 4 0 4 5 5 0 5 5 6 0 6 5 Return Loss dB Insertion Loss dB Frequency GHz IL J4 IL J3 IL J2 IL J1 RL J5 Figure 4 4 Typical Four Way Splitter Insertion Loss ...

Page 57: ...gure 4 5 The unused port must be terminated when checking the Insertion Loss NOTE The Return Loss of the Twelve Way Combiner s combined output port is typically better than 17dB see Figure 4 6 Figure 4 5 Typical Twelve Way Combiner Insertion Loss Figure 4 6 Typical Twelve Way Combiner Return Loss Combined Output Port ...

Page 58: ...gure 4 7 Figure 4 7 Typical Quad Amp Response NOTE The A1 Preamplifier s response may differ considerably particularly in flatness from the typical response shown in Figures 4 8 7 The typical response for the A1 Preamplifier at maximum gain setting is shown in Figure 4 8 Figure 4 8 Typical A1 Preamplifier Response ...

Page 59: ... 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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