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AR 800A3B Series Operating And Service Manual

Rf broadband amplifier
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Operating and
Service Manual
800A3B
Model
10036390
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 800A3B Model 10036390 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 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 6 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 7 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 8 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 9 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 10 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 11 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 12 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 13: Table Of Contents

    TABLE OF CONTENTS TABLE OF CONTENTS ....................i GENERAL INFORMATION ................1 General Description ....................1 Specifications ......................1 Power Supplies ...................... 2 Protection Circuits ....................2 1.4.1 Automatic Level Control Circuits ................2 Installation ......................2 1.5.1 Location ......................... 3 1.5.2 AC Power .......................
  • Page 14 Model 800A3B 2.6.2 RS-232 Communication ..................15 2.6.3 Fiber-Optic Communication ................. 16 2.6.4 USB Communication ................... 17 2.6.5 Ethernet Communication ..................17 2.6.6 Remote Commands ....................18 2.6.6.1 Power On/Off ....................19 2.6.6.2 RF On/Off ...................... 19 2.6.6.3 Reset Faults ....................20 2.6.6.4 Level Adjust ....................
  • Page 15 Model 800A3B 4.2.3 Thermal Faults ..................... 36 4.2.4 ALC Fault ......................36 4.2.5 RF Module Faults ....................36 Diagnosing and Replacing Amplifier Modules ........... 37 4.3.1 Locating Modules ....................37 4.3.2 Module Replacement ................... 38 LIST OF FIGURES Digital Control Panel (DCP) Features ..............8 Rear Panel Features ....................

  • Page 17: General Information

    RF power for typical applications such as RF susceptibility testing, particle accelerators, plasma generation, transducer testing, and use as a driver for higher power amplifiers. SPECIFICATIONS Refer to the AR RF/Microwave Instrumentation Data Sheet at the end of this section for detailed specifications. Rev D...

  • Page 18: Power Supplies

    Model 800A3B POWER SUPPLIES The Model 800A3B has four regulated switching power supplies with a combined normal power consumption of approximately 2,000 watts at the amplifier full rated output power. These power supplies are self- contained, regulated switching units. Two units supply 48V, as the main source of power for the amplifier circuitry.

  • Page 19: Location

    Model 800A3B 1.5.1 Location Select an operating location that will permit free air circulation around the amplifier’s cabinet. The Model 800A3B 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.

  • Page 20: Communications Connectors

    Model 800A3B 1.6.4 Communications Connectors 1.6.4.1 RS232 Wire Standard 9-pin D-subminiature female connector is provided on the rear panel. 1.6.4.2 IEEE-488 A standard 44-pin female GPIB panel connector is provided on the rear panel. 1.6.4.3 A standard USB-B connector is provided on the rear panel. 1.6.4.4 RS-232 Fiber Optic A standard F/O ST connector Tx and RS-232 connector Rx are located on the rear panel.
  • Page 21 U.S. Export Administration Regu- lations. Diversion contrary to U.S. law is pro- hibited. 800A3B Typical Power Output AR RF/Microwave Instrumentation 160 School House Rd Souderton, PA 18964 215-723-8181 For an applications engi- neer call:800.933.8181...
  • Page 22 48.3 x 30.5 54.4 cm removed (65 lb) 19.0 x 12.0 x 21.4 in 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...

  • Page 23: Operating Instructions

    2. OPERATING INSTRUCTIONS GENERAL Operation of the Model 800A3B 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 24: Digital Control Panel (Dcp) Features

    Model 800A3B Figure 2-1 Digital Control Panel (DCP) Features Item Title Function INHIBIT, LOCAL, REMOTE Keylock Switch, 3-position; key removal in INHIBIT position only POWER POWER control with indicator LED DISPLAY (TOUCH SCREEN) Numerous parameter values and fault messages, plus manual input control ADJUST Adjust knob to change selected variables RF INPUT...

  • Page 25: Main Power Circuit Breaker

    Model 800A3B 2.2.3 Main Power Circuit Breaker The Main Power circuit breaker, CB1, is located on the rear panel of the cabinet. REMOTE INTERFACE AC LINE CONNECTORS ENTRY Figure 2-2. Rear Panel Features 2.2.4 RF ON/OFF The RF ON/OFF touch screen menu selection toggles the amplifier from a Standby to an Operate mode. The status of the function is indicated on the display as RF ON or RF OFF.

  • Page 26: Digital Control Panel (Dcp) Operations

    Model 800A3B DIGITAL CONTROL PANEL (DCP) OPERATIONS The operations described in this section assume that the user is performing these operations from the amplifier’s front panel with the Keylock Switch in the LOCAL position. Remote control using a personal computer is available when the Keylock Switch is set to REMOTE. Refer to Section 2.5.5 for information on remote operation.

  • Page 27: Touch Panel Display Menu Map

    Model 800A3B Figure 2-3. Touch Panel Display Menu Map Values shown on screens are for illustration only. Rev D...

  • Page 28: Amplifier Operating Mode

    Model 800A3B 2.3.1 Amplifier Operating Mode The amplifier’s RF output level is controlled by the input drive level and the RF Gain control. Reference Figure 2-4. Figure 2-4. Typical Setup 2.3.3 Adjusting Amplifier Controls All adjustments to control the operation of the Model 800A3B are made using the dedicated controls, display menus with their associated touch screen menus, scroll keys, and adjust knob functionality.

  • Page 29: Rf Output

    Model 800A3B 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 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.

  • Page 30: Amplifier Operation

    Model 800A3B AMPLIFIER OPERATION 2.5.1 Typical Setup This section describes how the amplifier would be set up and calibrated. For a block diagram of a typical setup, see Figure 2-4, Typical Setup. 800W Attenuator Attenuator RF Power Amplifier Under 30dB 20dB Sweep Generator Meter...

  • Page 31: Repeat The Procedures In Sections 2.5.1.1 Through 2.5.1.3 At Each Test Frequency

    Model 800A3B 2.5.1.4 Repeat the Procedures in Sections 2.5.1.1 through 2.5.1.3 at Each Test Frequency. REMOTE OPERATION This section describes remote operation of this amplifier using the provided remote communication ports connected 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.

  • Page 32: Fiber-Optic Communication

    Model 800A3B button is pushed, the baud rate selection is stored to non-volatile memory. Therefore, if power is lost prior to hitting the back button, any baud rate selection changes will be lost. NOTE: This baud rate setting is shared by both the RS-232 port and the Fiber-Optic serial port. The RS-232 port is setup as a Data Circuit-terminating Equipment (DCE) port.

  • Page 33: 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 34: Remote Commands

    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 settings.

  • Page 35: Power On/Off

    Model 800A3B Table 2-4. Relationship between DCP Controls and Remote Communication AC Power and Power Keylock Switch Remote Circuit Breaker Communication INHIBIT LOCAL REMOTE Command Query √ √ √ √ √ √ √ √ √ √ √ √ √ √ √...

  • Page 36: Reset Faults

    None Query only (always requires a ? character) 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> AR-RF/MICROWAVE-INST,MODEL,1.0<LF> Response: Rev D...

  • Page 37: Io Board Firmware Revision

    Model 800A3B 2.6.6.6 IO Board Firmware Revision Query to get the firmware revision of the I/O Board. *IOB? Syntax: 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: *IOB?<LF>...

  • Page 38: State

    Model 800A3B 2.6.6.8 State Query to find the state of the amplifier. STATE? Syntax: Parameters: None Response Format: STATE=<space>xyza<LF> Where: x, y, z, and a are each an ASCII character representing a hexadecimal character. They can be 0 to 9 or A to F. Each hexadecimal character represents a 4-bit binary number.

  • Page 39: Forward Power

    Model 800A3B Example: To read the state, send the following query. STATE?<LF> Response: STATE=<space>8301<LF> (Remote Mode, Power On, RF OFF, and Manual Mode) 2.6.6.9 Forward Power Query to get the forward power. Syntax: FPOW? Parameters: None Response Format: FPOW=x<LF> Where: x = 0 to 99999 Values are corrected and linearized.

  • Page 40: Rf Gain

    Model 800A3B 2.6.6.11 RF Gain Query to get the RF gain. Syntax: RFG? Parameters: None Response Format: RFG=<space>x<LF> Where: x = 0000 to 0100 Example: To find out the RF gain of the amplifier, send the following query: RFG?<LF> Response: RFG=<space>0075<LF>...

  • Page 41: Operating Hours (Rf On)

    Model 800A3B 2.6.6.13 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 42: Ac Power-On Defaults

    Model 800A3B 2.6.6.15 AC Power-On Defaults Default settings that are applied at AC mains power-on can be changed by adding the following prefix to select commands. Syntax: DEFAULT: Compatible commands: Level Adjust LEVEL:GAIN LEVEL:DET (Not available on all models) LEVEL:THR (Not available on all models) LEVEL:RESP (Not available on all models)

  • Page 43: Output Impedance

    Model 800A3B 2.6.6.16 Output Impedance Command/query to set and/or get the output impedance. Syntax: IMPIx x = one-digit integer to select the output impedance. (Value depends on the model of Parameters: transformer being used.) Syntax: IMPI? Response Format: IMPI=<space>x Where: x = one-digit integer value indicating the selected output impedance Example: To find out the selected output impedance, send the following query:...
  • Page 44 Model 800A3B Rev D...

  • Page 45: Theory Of Operation

    3. THEORY OF OPERATION GENERAL The Model 800A3B amplifier can be a relatively simple unit to understand. The amplifier chain is a straightforward design, with a few control elements in the lineup. The unit’s power supply, control and fault detection circuits can be easily understood by anyone with a minimal understanding of analog and digital circuitry.

  • Page 46: 200W Modules

    Model 800A3B 3.2.3 200W Modules Refer to schematic 10021041. This module is a push-pull Class A amplifier which uses 4 transistors and a unique output transformer to achieve high-output power. The input impedance-matching balun, T1, has one side of its secondary connected to both “push” transistors and the other side connected to both “pull” transistors.

  • Page 47: Control Circuits

    Model 800A3B The high-power supplies PS3 and PS4 provide input and output TTL-compatible logic signals for inhibiting the supply and signaling the control system that the supply is malfunctioning. The fault signal is normally HI, going LO when a fault is present. The Enable signal must be LO to enable and either HI or Open to inhibit the output.

  • Page 48: Fault Detection Circuits

    Model 800A3B FAULT DETECTION CIRCUITS This section describes the function and theory of the Model 800A3B’s fault detection circuits. All fault- signalling circuits are wired directly to the control panel for processing. Detected fault signals are recorded in temporary (volatile) memory before the amplifier control circuits act to protect the amplifier, sometimes resulting in RF inhibit or shut down.

  • Page 49: Alc Fault

    Model 800A3B 3.5.4 ALC Fault An ALC fault is invoked whenever the forward or reverse power limit controls do not function, causing the RF power to exceed one of the preset limits. The ALC fault is a logic low when invoked. The logic low from the ALC board signals the digital control panel, which, in turn, disables the RF output by inhibiting the driver.
  • Page 50 Model 800A3B Rev D...

  • Page 51: Troubleshooting And Repair

    Section 4.2, Fault Signal Interpretation and Diagnosis. 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 authorization. If shipping from outside of the United States, closely follow all directions on the RMA form for return shipping and marking.

  • Page 52: General - Reading Faults

    Model 800A3B 4.2.1 General - Reading faults The Model 800A3B incorporates relatively simple fault detection circuitry, which makes use of the digital display panel to alert the user or technician which component(s) need service. Use of these indications can usually expedite troubleshooting of the amplifier. Most faults can be immediately determined down to the assembly level.

  • Page 53: Diagnosing And Replacing Amplifier Modules

    Model 800A3B DIAGNOSING AND REPLACING AMPLIFIER MODULES 4.3.1 Locating Modules See Figure 4-1. IMPEDANCE DRIVER COMBINER TRANSFORMER FRONT OF AMPLIFIER Figure 4-1. 800A3B Module Locations (Top View) Rev D...

  • Page 54: Module Replacement

    Model 800A3B 4.3.2 Module Replacement If, after troubleshooting, it has been determined that one of the 200 watt modules has failed, the following procedure should be followed if a spare module for the unit is available. CAUTION: Power to the unit must be turned off before performing any repair work; this should be done by unplugging the unit from the line voltage source.
  • Page 55 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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