1. Manuals
  2. Brands
  3. AR Manuals
  4. Amplifier
  5. 25A250B
  6. Operating and service manual

AR 25A250B Operating And Service Manual

Rf broadband amplifier
Hide thumbs
Table of Contents

Advertisement

Quick Links

Operating and
Service Manual
25A250B
Model
10043414
Part Number
Serial Number
160 School House Road, Souderton, PA 18964 • 215-723-8181 • Fax 866-859-0582 • www.arworld.us

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 25A250B and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for AR 25A250B

Summary of Contents for AR 25A250B

  • Page 1 Operating and Service Manual 25A250B Model 10043414 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 ....................i 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 Model 25A250B FIGURES Model 25A250B Front Panel ................. 7 Model 25A250B Rear Panel .................. 8 Typical Response at -20dBm Input ..............24 Typical Response at 0dBm Input ................. 24 TABLES IEEE-488 Address Selection .................. 9 RS-232 Port Settings .................... 10 RS-232 (DCE) Port Pinout Diagram DB-9 Female ..........

  • Page 17: General Information

    (dB) or more. Solid state technology is used exclusively to offer significant advantages in reliability and cost. A Model 25A250B, used with a frequency-swept signal source, will provide 25 watts of swept power output from 0.01–250 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 25A250B 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  Portable moved for rack mounting. cations are available remotely through the  Full VSWR– The Model 25A250B, when used with a sweep optional Remotes Package. The Remotes Pack- tolerant generator, will provide a minimum of 25 watts age includes GPIB/IEEE-488 format, RS-232 ...
  • Page 20 CAN/CSA C22.2 #61010-1 20 watts, -35 dBc typical at 15 watts CENELEC EN 61010-1 SPURIOUS: Minus 73 dBc typical RoHS DIRECTIVE 2011/65/EU EXPORT CLASSIFICATION: EAR99   Ordering Options Contact your AR RF/Microwave Instrumentation Sales Associate for specific model configuration pricing.
  • Page 21 Page 3 Graphs 25A250B  25 Watts CW  10kHz–250MHz...
  • Page 22 Page 4 Graphs 25A250B  25 Watts CW  10kHz–250MHz...
  • Page 23 Page 5 Envelope Drawing 25A250B  25 Watts CW  10kHz–250MHz 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

    Normal operation can be resumed after the chassis temperature drops below 70° C. AMPLIFIER FRONT AND REAR PANELS Figure 2-1 shows the front panel of the Model 25A250B Broadband Microwave Amplifier. Figure 2-2 shows the rear panel of the Model 25A250B Broadband Microwave Amplifier.

  • Page 26: Local Operation

    Model 25A250B Figure 2-2. Model 25A250B Rear Panel LOCAL OPERATION 2.3.1 Power-up Sequence 1. Connect the input signal to the unit’s RF INPUT connector. The input signal level should be 0dBm maximum. 2. Connect the load to the unit’s RF OUTPUT connector.

  • Page 27: Remote Communications

    Model 25A250B REMOTE COMMUNICATIONS This section describes remote operation of this product using the installed communications ports connected to a remote 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 and lost commands or queries.

  • Page 28: Rs-232 Communications

    Model 25A250B 2.4.2 RS-232 Communications The RS-232 port is a serial communications bus. All commands and queries through this port must be terminated with a <LF>. When a valid query is received, it is processed and the result is immediately transmitted back over the RS-232 interface.

  • Page 29: Usb Communications

    The connector type for this port is ST. This port can be used with either an AR IF7000 RS-232 to Fiber-Optic Interface or an AR IF7001 USB to Fiber-Optic Interface. 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 30: 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 31 Model 25A250B 2.4.6.1 Power On/Off This command controls the power on/off state of the amplifier. Syntax: Parameters: State(x): 0 = power off 1 = power on Response Format: None (No query for this command) Example: To turn the power on, send the following command: P1<LF>...
  • Page 32 Model 25A250B 2.4.6.4 Identity Query to identify the amplifier: Syntax: *IDN? Parameters: 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>...
  • Page 33 Model 25A250B 2.4.6.6 State Query to find the state of the amplifier. Syntax: STATE? Parameters: None Response Format: STATE=<space>xyza 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.
  • Page 34 Model 25A250B 2.6.6.13 Faults (25A250B) Query to find the faults that have occurred with the amplifier. Syntax: FSTA? Parameters: None Response Format: FSTA=<space>00xx Where: xx = 00 to 34 (Hexadecimal) Description No Fault Interlock Thermal A1 Amp A1 Example: To find out what faults have occurred, send the following query. FSTA?<LF>...

  • Page 35: Theory Of Operation

    3. THEORY OF OPERATION INTRODUCTION The Model 25A250B RF amplifier consists of a 0.01-250 MHz RF amplifier assembly. The RF amplifier assembly consists of one RF amplifier module. The power supply section consists of an AC input filter, a circuit breaker, +5V, +15V, and -15V power supplies;...

  • Page 36: Control System

    Model 25A250B Power Supply PS2 is a single output supply which provides +28VDC to the RF final stage and to the A10 Voltage Regulator board. Primary AC circuit protection is provided by the circuit breaker in the Power Entry Module.

  • Page 37: Maintenance

    4. MAINTENANCE GENERAL MAINTENANCE INFORMATION The Model 25A250B 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 38: Troubleshooting

    GaN HEMTs and other ESD-sensitive devices. Troubleshooting the Model 25A250B 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 39: Power On Indication Doesn't Display On Front Panel Vacuum Fluorescent Display

    Fluorescent Display (VFD) when POWER Switch is Depressed (Schematic Diagram No. 10042820) 1. If the Model 25A250B is operating in an otherwise normal fashion, the front panel VFD or the wiring to it could be defective. 2. Check the LOCAL/REMOTE switch on the unit’s front panel; it must be set to the LOCAL position in order to operate the front panel POWER switch.

  • Page 40: The Unit Cannot Be Operated Remotely

    RF energy when these doors are opened. NOTE: The Model 25A250B 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 41: Amplifier Faults (Schematic Diagram Nos. 10042820 And 10040606)

    Model 25A250B 4.3.5 Amplifier Faults (Schematic Diagram Nos. 10042820 and 10040606) 1. The fault output the A1 RF module is sensed on A4, J13, pin 9. 2. The Amplifier Fault LED (DS2) should be lit, indicating a module failure. 3. Verify the correct voltages to the modules. Troubleshoot any incorrect voltages.

  • Page 42: Typical Response At -20Dbm Input

    1. The Model 25A250B’s typical gain response at -20 dBm input and 0 dBm input is shown in Figures 4-1 and 4.2 respectively. The actual gain may vary considerably from that shown in Figure 4-1 but should be ≥...
  • Page 43 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.

This manual is also suitable for:

10043414

Table of Contents