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AR 250S1G6 Operating And Service Manual

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Operating and
Service Manual
250S1G6
Model
10041451
Part Number
Serial Number
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 1 Operating and Service Manual 250S1G6 Model 10041451 Part Number Serial Number 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...
  • 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 Protection Circuits ....................2 Installation ......................2 1.5.1 Location ........................2 1.5.2 Power ........................2 OPERATING INSTRUCTIONS ................ 5 General ........................
  • Page 16 Model 250S1G6 3.3.1 A31 Regulator Board (Schematic #10031647) ............ 27 Control System ..................... 28 3.4.1 A34 Control Panel Assembly (Schematics 10029679, 10030013) ...... 28 3.4.2 A39 Interface Board (Schematic #10020073) ............. 28 3.4.3 A37 ALC Board (Schematic #10023927) ............28 MAINTENANCE ....................

  • Page 17: General Information

    (dB) or more. Solid state technology is used exclusively to offer significant advantages in reliability and cost. A Model 250S1G6, used with a frequency-swept signal source, will provide 250 watts of swept power output from 0.7–6.0 gigahertz (GHz). 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: Protection Circuits

    Select an operating location that will permit air to circulate freely around the amplifier’s cabinet. The Model 250S1G6 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 The low level of spurious signals and linearity of tor, will provide a minimum of 250 watts of RF the Model 250S1G6 make it ideal for use as a power. Included is a front panel driver amplifier in testing wireless and communi- gain control which permits the cation components and subsystems.
  • Page 20 56.1 x 90.2 x 67.3 cm and casters (190 lbs) 22.1 x 35.5 x 26.5 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 21: Operating Instructions

    RF stages, when the chassis temperature reaches approximately 70°C. Normal operation can be resumed after the chassis temperature drops below 70° C. CONTROL AND INDICATOR FUNCTIONS The Model 250S1G6’s front panel is shown in Figure 2-1; the unit’s rear panel features are detailed in Figure 2-2. 2.2.1...

  • Page 22: Power Switch

    Model 250S1G6 2.2.2 POWER Switch The momentary POWER switch turns the main power to the amplifier on and off. The status of the green light-emitting diode (LED) in the switch indicates whether the amplifier’s power is on or off. The main power supply fans are active when power is on.

  • Page 23: Main Power

    Model 250S1G6 2.2.3 Main Power The Main Power circuit breaker is located on the rear panel of the amplifier. Figure 2-2. Rear Panel Features Item Title Function RF INPUT (rear connector versions) Type N female connector RF OUTPUT (rear connector versions)

  • Page 24: Reset Function

    Model 250S1G6 2.2.5 RESET Function The RESET function, selected by the touch screen button, will cause the amplifier to attempt to reset. Selecting Reset may clear the fault, depending upon the type of fault that has occurred. If the amplifier is in an over-driven condition, lowering the amplifier’s gain or RF input level should enable the function to reset...

  • Page 25: Rear Panel Features

    Model 250S1G6 Figure 2-3. Touch Panel Display Menu Map Values shown on screens are for illustration only. Rev D...

  • Page 26: Rf Gain Control

    2.4.3 IEEE-488, USB, and RS-232 Interfaces The Model 250S1G6’s remote interfaces allow remote control, via a computer, of all amplifier functions (except for the Keylock Switch position) that can be controlled from the front panel. When the amplifier is in the Remote mode (as determined by the position of the Keylock Switch), a special Remote display is shown (see Figure 2-3).

  • Page 27: Amplifier Operation

    Model 250S1G6 AMPLIFIER OPERATION 2.5.1 Local Operation 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. 3. Set the REMOTE/LOCAL switch to LOCAL.

  • Page 28: Rs-232 Communication

    Model 250S1G6 2.6.1.1 Setting the IEEE-488 (GPIB) Address The IEEE-488 device address can be set to any number between 1 and 30. This selection is made by navigating to the GPIB address selection screen. To get there from the Main Menu, touch the User menu button followed by the I/O menu button and finally the GPIB menu button.

  • Page 29: Fiber-Optic Serial 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 30: Ethernet Communication

    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: Fiber-Optic Serial Port Settings

    Model 250S1G6 The development 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 character string (command or query) at a time. After each functional command is issued, the amplifier’s status should be checked to ensure that the command has been properly executed.
  • Page 32 Model 250S1G6 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 command) Example: To turn the RF on, send the following command: RF:ON<LF>...

  • Page 33: Relationship Between Dcp Controls And Remote Communication

    Model 250S1G6 2.6.6.5 Level Adjust This command sets the RF Gain, ALC Detector Gain, ALC Threshold, and ALC Response Time. Syntax: LEVEL:xy Parameters: Parameter(x): GAIN = RF Gain DET = ALC Detector Gain THR = ALC Threshold RESP = ALC Response Time...
  • Page 34 Model 250S1G6 2.6.6.6 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 35 Model 250S1G6 2.6.6.8 Machine State This query reads the RF gain, detector gain, ALC threshold, and ALC response time of the amplifier. Syntax: MSB? Parameters: None Query only (always requires a ? character) Response Format: RF<space>GAIN=x, DT<space>GAIN=x, THRES=x, RESP=y<LF> Value(x):...
  • Page 36 Model 250S1G6 2.6.6.9 State Query to find the state of the amplifier. Syntax: STATE? 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.
  • Page 37 Model 250S1G6 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) 2.6.6.10 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 38 Model 250S1G6 2.6.6.12 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> RFG=<space>0075<LF>...
  • Page 39 Model 250S1G6 2.6.6.14 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 40 Model 250S1G6 2.6.6.16 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...

  • Page 41: Theory Of Operation

    3. THEORY OF OPERATION INTRODUCTION The Model 250S1G6 RF amplifier consists of a 0.7–6.0 GHz RF amplifier assembly. The RF amplifier assembly consists of a Pre-Amplifier (Pre-Amp), a Quadrature-Coupled Amplifier (Quad Amp) used as a driver, a four-way splitter, (4) quad amplifiers used as drivers, (4) four-way splitters, (16) quad amplifiers and a 16-way combiner.

  • Page 42: A2, A4-A7 Driver Amps (Schematic 10036226, 10028316, 10033603)

    Model 250S1G6 3.2.2 A2, A4-A7 Driver Amps (Schematic 10036226, 10028316, 10033603) The Driver Amp RF section is assembled on thin film substrates and the bias control and fault circuitry is assembled on a multi-layer printed circuit board. It has two (2) GaN amplifier sections. Each section is input and output DC isolated by coupling capacitors.

  • Page 43: A29 Dual Directional Coupler

    Model 250S1G6 3.2.6 A29 Dual Directional Coupler A29 is a 40 dB dual directional coupler which is connected to the output of the A16 eight-way combiner. The coupler provides a sample of the forward and reflected RF signal at the output of the combiner.

  • Page 44: Control System

    Model 250S1G6 CONTROL SYSTEM 3.4.1 A34 Control Panel Assembly (Schematics 10029679, 10030013) The A34 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.

  • Page 45: Maintenance

    4. MAINTENANCE GENERAL MAINTENANCE INFORMATION The Model 250S1G6 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

    GaN HEMTs and other ESD-sensitive devices. Troubleshooting the Model 250S1G6 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: General - Reading Faults

    The digital control panel of the 250S1G6 indicates the output power from the 250S1G6 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 defective or that the load being driven has a high VSWR.

  • Page 48: Interlock Fault (Schematic Diagram No. 10034514)

    RF energy when these doors are opened. NOTE: The Model 250S1G6 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 49: Alc Fault

    Low or No Power Output (DC Tests) (Schematic Diagram No. 10034514) All indicators on the Model 250S1G6 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.

  • Page 50: Low Or No Power Output (Rf Test) (Schematic Diagram No. 10034514)

    1. The Model 250S1G6’s typical gain response at 0 dBm input and -20 dBm input is shown in Figures 4-1 and 4-2. The actual gain may vary considerably from that shown in Figure 4-1 but should be ≥ 55.5 dBm.
  • Page 51 Model 250S1G6 2. Remove the coaxial cable from the output of the K1 connector to the input of the A3 Four-Way Splitter. The typical response from the input of the A3 Four-Way Splitter to the RF Output connector on the unit’s front panel is shown in Figure 4-3.

  • Page 52: Typical Response At 0 Dbm Input

    Model 250S1G6 4. If the gain is 5dB or more below the typical response, do the following: Disconnect the coaxial cable from the input of the A4 Quad Amp, and note the results. • Reconnect the coaxial cable from the input of A4and disconnect the coaxial cable from the input of •...

  • Page 53: Typical Response: Input A3 Front Panel Rf Output

    Model 250S1G6 6. A typical Sixteen-Way Combiner Insertion Loss and Combined Port Return Loss is shown in Figure 4-6. The unused port must be terminated when checking the Insertion Loss. NOTE: The Return Loss of the Sixteen-Way Combiner’s combined output port is typically better than 17dB (see Figure 4-6).

  • Page 54: Typical Four-Way Splitter Insertion Loss

    Model 250S1G6 8. The typical response for the A1 Preamplifier (at maximum gain setting) is shown in Figure 4-8. Frequency (GHz) Figure 4-8. Typical A1 Preamplifier Response Rev D...

  • Page 55: Typical Sixteen-Way Combiner Insertion And Return Loss: Combined Output Port

    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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10041451

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