AR 175A400 Operating And Service Manual
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AR 175A400 Operating And Service Manual

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Operating and
Service Manual
175A400
Model
10044831
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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  • Page 1 Operating and Service Manual 175A400 Model 10044831 Part Number Serial Number 160 School House Road, Souderton, PA 18964 • 215-723-8181 • Fax 866-859-0582 • www.arworld.us...
  • Page 3 REGULATION (EC) 1907/2006 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 18 December 2006 concerning the Registration, Evaluation, Authorization and Restriction of Substances of Very High Concern Chemicals (SVHC) Supporting documentation is held by AR RF/Microwave Instrumentation’s Quality department in Pennsylvania, United States. Place of issue:...
  • Page 5 Instructions for European EMC Conformity WARNING It is the responsibility of the user of this equipment to provide electromagnetic shielding, filtering and isolation which is necessary for EMC compliance to Directive 2014/30/EU. The equipment must therefore be operated in a shielded area which provides a sufficient level of attenuation to meet the radiated emissions and immunity specifications.
  • Page 7 The caution symbol denotes a potential hazard. Attention must be given to the statement to prevent Your AR equipment may have more than one power supply cable. Use damage, destruction, or harm. only approved power cable(s). If you have not been provided with a Dangerous voltages are present.
  • Page 8 EQUIPMENT CONTAINING LASERS risk of serious injury due to unsafe AR Field Probes (FL/PL Series) and Field Analyzers (FA product handling should be a fundamental Series) are Class 1 laser products containing embedded consideration every user.
  • Page 9 Zur Vermeidung von Personen- oder Sachschäden gilt BEVOR SIE DAS GERÄT ANSCHLIESSEN es, die Hinweise zu beachten. Ihre AR-Ausrüstung hat möglicherweise mehr als ein Stromversorgungskabel. Gefährliche elektrische Spannungen sind vorhanden. Verwenden Sie nur zugelassene Stromkabel. Falls Sie kein Stromkabel oder Höchste Vorsicht ist geboten.
  • Page 10 Die meisten Geräte müssen während des Versands, der Montage und des Gebrauchs LASER-INFORMATION transportiert werden. Jeder Nutzer sollte sich AR - Feldsonden (FL/PL-Serie) und Feldanalysatoren (FA-Serie) über das Risiko von schweren Verletzungen sind Laserprodukte der Klasse 1 mit eingebetteten Klasse-4- durch unsachgemäße...
  • Page 11 électrode de mise à la Votre équipement AR peut disposer de plus d’un câble d’alimentation terre de protection. électrique. Utilisez uniquement un ou des câbles d’alimentation approuves.
  • Page 12 éliminer le risque injustifié de blessures causées par le levage est fournie par les méthodes de travail de NIOSH (publication Les sondes de champ AR (série FL/PL) et les analyseurs de n° 94-110) disponibles sur : champ (série FA) sont des produits laser de classe 1 contenant des lasers intégrés de classe 4.
  • Page 13 Er zijn gevaarlijke elektrische spanningen aanwezig. Wees uiterst voorzichtig. VOOR HET OPZETTEN VAN DE STROOM Uw AR-apparatuur kan meer dan een netvoedingskabel bezitten. Gebruik alleen goedgekeurde netvoedingskabel(s). Koopt een Wijst op een terminal aan die bedoeld is voor aansluiting netvoedingskabel die is goedgekeurd voor gebruik in uw land als u...
  • Page 14 APPARAAT DAT LASERS BEVAT distributie, de assemblage en het gebruik moeten worden behandeld, moet het risico AR-terreinsondes (FL/PL-serie) en terreinanalysatoren (FA- op ernstig letsel als gevolg van een serie) zijn laserproducten van klasse 1 met ingesloten onveilige behandeling van het product een klasse 4-lasers.

  • Page 15: Table Of Contents

    • TABLE OF CONTENTS TABLE OF CONTENTS ....................iii GENERAL INFORMATION ................1 General Description ....................1 Specifications ......................1 Power Supplies ....................... 1 Installation ......................2 1.4.1 Location ........................2 1.4.2 Power ........................2 OPERATING INSTRUCTIONS ................ 7 General ........................7 Amplifier Front and Rear Panels ................
  • Page 16 Typical A1 Pre-Amplifier Response ..............32 TABLES RS-232 Port Settings .................... 11 RS-232 (DCE) Port Pinout Diagram DB-9 Female..........11 Fiber-Optic Port Settings ..................12 2-4. Relationship between 175A400 Controls and Remote Communication ....14 States ........................17 Faults ........................18...

  • Page 17: General Information

    (dB) or more. Solid state technology is used exclusively to offer significant advantages in reliability and cost. A Model 175A400, used with a frequency-swept signal source, will provide 175 watts of swept power output from .01–400 megahertz (MHz). Typical applications include antenna and component testing, wattmeter calibration, and electromagnetic interference (EMI) susceptibility testing, as well as usage as a driver for frequency multipliers and high-power amplifiers.

  • Page 18: Installation

    Select an operating location that will permit air to circulate freely around the amplifier’s cabinet. The Model 175A400 utilizes air cooling and should be located where the normal flow of air into or exiting from the unit will not be restricted, diverted, or re-circulated through the unit itself; in particular, the flow of warm air exiting the rear of the amplifier should not be impeded.

  • Page 19: Specifications

     Portable moved for rack mounting. included Remotes Package. The Remotes Pack-  Full VSWR– The Model 175A400, when used with a sweep age includes GPIB/IEEE-488 format, RS-232 tolerant generator, will provide a minimum of 175 hardwire and fiber optic, USB, and Ethernet.

  • Page 20: Power

    HARMONIC DISTORTION: Minus 20 dBc maximum at RoHS DIRECTIVE 2011/65/EU 150 watts EXPORT CLASSIFICATION: EAR99   SPURIOUS: Minus 73 dBc typical PRIMARY POWER (Universal; selected automatically): 100-240 VAC, 50/60Hz, 770 watts Ordering Options Contact your AR RF/Microwave Instrumentation Sales Associate for specific model configuration pricing.
  • Page 21 Page 3 Graphs 175A400  175 Watts CW  10kHz–400MHz...
  • Page 22 Page 4 Graphs 175A400  175 Watts CW  10kHz–400MHz...
  • Page 23 Page 5 Envelope Drawing 175A400  175 Watts CW  10kHz–400MHz To order AR 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.us Approved for public release by AR RF/Microwave Instrumentation...

  • Page 25: Operating Instructions

    2. OPERATING INSTRUCTIONS GENERAL Operation of the Model 175A400 broadband amplifier is quite simple. The amplifier’s input signal, whether swept or fixed in frequency, is fed into the jack marked RF INPUT, and the amplifier’s output signal is taken from the jack labeled RF OUTPUT. The unit is turned on by activating the front panel POWER switch. In the event of a major malfunction, protection is provided by a circuit breaker located on the unit’s rear panel.

  • Page 26: Local Control Interface

    2.2.1.2 Power Button The momentary POWER button turns the main power to the 175A400 on and off. The status of the green light-emitting diode (LED) in the switch indicates whether the 175A400 power is on or off. The main power supply fans are active when power is on.

  • Page 27: Menu Map

    Model 175A400 2.2.1.5 Menu Map Figure 2-3 shows the menu map for the 175A400. The screens depicted are only example screens. The actual values and settings will be different on the actual amplifier depending on user settings and operating conditions.

  • Page 28: Remote Control Interface

    For GPIB operation, the device address is set using the front panel touch screen. Ensure that each device connected to the GPIB is set to a unique address. To send commands be sure that the 175A400’s address is set properly and that the controller has correctly identified it as a “listening” device.

  • Page 29: Fiber-Optic Serial Communication

    The Fiber-Optic port provides the user with the ability to optically isolate the controlling PC from the 175A400. 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 back to the controlling PC.

  • Page 30: Usb Communication

    This port can be used in conjunction with either an AR model IF7000 RS-232 to Fiber-Optic Interface (1200 to 9600 baud only) or an AR model IF7001 USB to Fiber-Optic Interface (19200 baud only). Note that these devices use SMA connectors so a fiber-optic cable is needed with ST connectors on one end and SMA connectors on the other.

  • Page 31: Remote Commands

    An application program on the computer/controller should issue only one character string (command or query) at a time. After each functional command is issued, the 175A400’s status should be checked to ensure that the command has been properly executed. The application program should allow sufficient time for the function to be completed before checking the status.

  • Page 32: Power On/Off

    √ √ √ X = No, √ = Yes 2.4.6.1 Power On/Off This command controls the power on/off state of the 175A400. Syntax: POWER:x Parameters: State(x): OFF = power off ON = power on Response Format: None (No query for this command)

  • Page 33: Reset Faults

    None Response Format: None (No query for this command) Example: To clear any faults, send the following command: RESET<LF> 2.4.6.4 Level Adjust This command sets the RF gain of the 175A400. Syntax: LEVEL:xy Parameters: Parameter(x): GAIN = RF Gain Value(y):...

  • Page 34: Identity

    Response Format: f,m,n,<LF> Where: f = manufacturer m = model designation n = firmware revision Example: To get the identity of the 175A400, send the following command: *IDN?<LF> Response: AR-RF/MICROWAVE-INST,XXXXXXXX,1.0<LF> 2.4.6.6 IO Board Firmware Revision Query to get the firmware revision of the I/O Board.

  • Page 35: State

    They can be 0 to 9 or A to F. Each hexadecimal character represents a 4-bit binary number. This 4-bit number is a bit pattern which contains information about the state of the 175A400. The definitions of these bit positions can be found in the table below.

  • Page 36: Rf Gain

    RFG? Parameters: None Response Format: RFG=<space>x<LF> Where: x = 0000 to 0100 Example: To find out the RF gain of the 175A400, send the following query: RFG?<LF> Response: RFG=<space>0075<LF> (75% Gain) 2.4.6.9 Faults Query to find the faults that have occurred with the 175A400.

  • Page 37: Operating Hours (Rf On)

    Model 175A400 2.4.6.10 Operating Hours (RF On) Query to get the RF On operating hours. Syntax: Parameters: None Response Format: OH=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.

  • Page 38: Sbb (Piggyback) Firmware Revision

    Model 175A400 2.4.6.12 SBB (Piggyback) Firmware Revision Query to get the firmware revision of the piggyback SBB assembly. Syntax: *SBB? Parameters: None Query only (always requires a ? character) Response Format: SBB_SW_REVx<LF> Where: x = firmware revision Example: To get the firmware rev. of the piggyback SBB assembly, send the following command: *SBB?<LF>...

  • Page 39: Ac Power-On Defaults

    To set the default mode to manual, send the following command: DEFAULT:MODE:MANUAL<LF> 2.4.7 Interlocks The 175A400 has one interlock circuit that is wired to the rear panel Safety Interlock connector. This interlock requires a normally closed external circuit to allow the unit to function. Rev C...

  • Page 40: Inhibit Interlock

    Model 175A400 2.4.7.1 Inhibit Interlock This interlock circuit inhibits RF amplification by disabling the Pre-amp (A1) and Power (A6 – A7) amplifier stages. The Inhibit Interlock is wired to the rear panel interlock connector pins 1 and 8. A closed circuit from interlock connector pin 1 to pin 8 is required for normal operation.

  • Page 41: Theory Of Operation

    3. THEORY OF OPERATION INTRODUCTION The Model 175A400 RF amplifier consists of a .01-400 MHz RF amplifier assembly. The RF amplifier assembly consists of a Pre-Amplifier (Pre-Amp) and two final amplifier modules. The power supply section consists of an AC input filter, a circuit breaker, +5V, -15V, +24V and two +40V power supplies, an Operate/Control circuit, and an interface board.

  • Page 42: A6-A7 100W 400Mhz Module Assembly (Schematic 10039874)

    Model 175A400 3.2.3 A6–A7 100W 400MHz Module Assembly (Schematic 10039874) The 100W 400MHz Module Assembly consists of RF matching circuits, an RF transistor (Q1), a bias control circuit, and a fault detection circuit. The RF input is fed to a 4:1 balun transformer composed of T1 and T2. The output signal of the 4:1 transformer is connected to the gates of Q1.

  • Page 43: Control System

    Model 175A400 CONTROL SYSTEM 3.4.1 A12 Control/Fault Board (Schematic #10042218) The A12 Control/Fault board consists of one 16-bit microcontrollers and several other ICs that monitor and indicate the status of the amplifier. Power is supplied using only a single 5-volt power supply. The board...
  • Page 44 Model 175A400 Rev C...

  • Page 45: Maintenance

    4. MAINTENANCE GENERAL MAINTENANCE INFORMATION The Model 175A400 requires very little maintenance since it is a relatively simple instrument. It is built with etched circuit wiring and solid state devices that will ensure long, trouble free life. However, should trouble occur special care must be taken in servicing to avoid damage to the devices or the etched circuit board.

  • Page 46: Troubleshooting

    LDMOS and other ESD-sensitive devices. Troubleshooting the Model 175A400 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.

  • Page 47: The Unit Cannot Be Operated Remotely

    RF energy when these doors are opened. NOTE: The Model 175A400 is shipped with a mating connector, which has a jumper between Pins 1 and 8, installed in the rear panel interlock connector. The unit will not operate unless the interlock circuit is closed.

  • Page 48: Amplifier Faults (Schematic Diagram Nos. 10044790, 10039874)

    Model 175A400 4.3.5 Amplifier Faults (Schematic Diagram Nos. 10044790, 10039874) 1. The fault output of the A6 – A7 modules is sensed on A12, J5, pins 9, 10, 11, 12 and 13. 2. Verify the correct voltages to the modules. Troubleshoot any incorrect voltages.

  • Page 49: Low Or No Power Output (Rf Test) (Schematic Diagram Nos. 10044790 And 10039874)

    1. The Model 175A400’s typical gain response at -20 dBm input and 0 dBm input is shown in Figure 4-1 and Figure 4-2. The actual gain may vary considerably from that shown in Figure 4-1 but should be ≥ 54 dBm at 0dBm input.

  • Page 50: Typical A Module Response

    Model 175A400 Figure 4-3. Typical A Module Response 2. The typical response for the A1 Pre-Amplifier (at maximum gain setting) is shown in Figure 4-4. Figure 4-4. Typical A1 Pre-Amplifier Response Rev C...
  • Page 51 These modules are not field-repairable and should never be opened outside of AR’s Microelectronics Lab. The modules in these product lines have a security label on two sides of the modules between the housing and lid/cover. If the security label is removed and or cut, the warranty of the module will be voided.

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10044831

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