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Summary of Contents for AR 2500A225B
- Page 1 Operating and Service Manual 2500A225B Model 10049519 (HV) Part Number Serial Number 160 Schoolhouse 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.
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Page 15: Table Of Contents
TABLE OF CONTENTS TABLE OF CONTENTS ....................i GENERAL INFORMATION ................1 General Description ....................1 Specifications ......................1 Installation ......................1 1.3.1 Location ........................1 1.3.2 Primary Power ......................2 RF Connections ...................... 3 1.4.1 Amplifier Input Connector ..................3 1.4.2 Amplifier Output Connector .................. - Page 16 Model 2500A225B 2.6.6.11 Reverse Power ....................23 2.6.6.12 RF Gain ......................24 2.6.6.13 Faults (2500A225B) ..................24 2.6.6.14 Operating Hours (RF On) ................25 2.6.6.15 Operating Hours (Power On) ................. 25 2.6.6.16 AC Power-On Defaults .................. 26 THEORY OF OPERATION ................27 Introduction ......................
- Page 17 Typical Response at -20dBm Input ..............37 Typical A1 Pre-Amplifier Response -20 dBm Input ..........38 Typical A1 Pre-Amplifier Response 0 dBm Input ..........38 2500A225B Right Side, Modules A1-A8 ............39 Connectors ......................39 SMA Module Input ....................40 Final Module RF Output ..................
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Page 19: General Information
Select an operating location that will permit air to circulate freely around the amplifier’s cabinet. The Model 2500A225B 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 20 Model 2500A225B 1.3.2 Primary Power The Model 2500A225B is designed to operate using AC primary power of 200–240 Volts or 380-415 Alternating Current (VAC), 50–60 Hz, three phase, 8500 watts maximum. CAUTION: Dangerous voltages are present in the Model 2500A225B whenever the unit is plugged into an AC outlet.
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Page 21: Rf Connections
Model 2500A225B RF CONNECTIONS 1.4.1 Amplifier Input Connector The Type N female RF Input connector for the amplifier can be located on the front or rear of the amplifier. A maximum input signal of 0dBm is recommended to achieve full rated power. The amplifier is protected to +13dBm input without damage or failure. - Page 22 Model 2500A225B Rev B...
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Page 23: Specifications
Specifications Features 2500A225B The Model 2500A225B is a solid-state, self- of the amplifier. The DCP uses a color LCD contained, broadband amplifier designed for touch screen display to indicate the operate 2500 Watts CW applications where instantaneous bandwidth, status and fault conditions if an over- ... -
Page 24: Primary Power
SPURIOUS: Minus 70 dBc typical Ordering Options Contact your AR RF/Microwave Instrumentation Sales Associate for specific model configuration pricing. 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 25: Rf Sample Ports
Specifications Page 3 2500A225B 2500 Watts CW 10kHz–225MHz... - Page 26 Specifications Page 4 2500A225B 2500 Watts CW 10kHz–225MHz...
- Page 27 Specifications Page 5 2500A225B 2500 Watts CW 10kHz–225MHz 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...
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Page 29: Operating Instructions
RF output transistors. In the event of a cooling fan failure or an airflow blockage, the DC voltage will be removed from the RF stages. CONTROL AND INDICATOR FUNCTIONS The Model 2500A225B’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 30: Power Switch
Model 2500A225B 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 31: Main Power
Model 2500A225B 2.2.3 Main Power The Main Power circuit breaker and the Power Inlet are located on the rear panel of the amplifier. Figure 2-2. Rear Panel Features 2.2.4 RF ON/OFF The RF ON/OFF touch screen button 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 32: Digital Control Panel (Dcp) Operations
Model 2500A225B 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. -
Page 33: Rf Gain Control
Model 2500A225B Figure 2-3. Touch Panel Display Menu Map Values shown on screens are for illustration only. 2.3.1 RF GAIN Control The RF GAIN control is used to adjust the input attenuator of the preamplifier-leveler module. This control simply adjusts the output power level for a fixed input power level. -
Page 34: Rf Output
2.4.3 IEEE-488, USB, and RS-232 Interfaces The Model 2500A225B’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 35: Remote Operation
Model 2500A225B 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. Communicating through two or more ports at one time will cause data collisions and lost commands or queries. -
Page 36: Setting The Ieee-488 (Gpib) Address
Model 2500A225B 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 37: Fiber-Optic Communication
The connector type for this port is ST. 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 38: Usb 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. One should use caution in adjusting any settings he/she is unfamiliar with as doing so may cause the port to become unresponsive. -
Page 39: Remote Commands
Model 2500A225B 2.6.6 Remote Commands If a command or query is unrecognized it is echoed back out the port it came in on. • • All commands and queries are terminated with a Line Feed character. A Line Feed character is indicated by <LF> in subsequent command and query definitions. -
Page 40: Power On/Off
Model 2500A225B 2.6.6.1 Power On/Off This command controls the power on/off state of the amplifier. POWER:x Syntax: Parameters: State(x): OFF = power off ON = power on Response Format: None (No query for this command) Example: To turn the power on, send the following command: POWER:ON<LF>... -
Page 41: Mode Select
Model 2500A225B 2.6.6.4 Mode Select This command sets the ALC mode of the amplifier. MODE:x Syntax: 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*... -
Page 42: Identity
Model 2500A225B 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 Response Time to max, send the following command: LEVEL:RESP7<LF>... -
Page 43: Machine State
Model 2500A225B 2.6.6.8 Machine State This query reads the RF gain, detector gain, ALC threshold, and ALC response time of the amplifier. MSB? Syntax: 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 44: State
Model 2500A225B 2.6.6.9 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. -
Page 45: Forward Power
Model 2500A225B 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 46: Rf Gain
Model 2500A225B 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 47: Operating Hours (Rf On)
Model 2500A225B 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 48: Ac Power-On Defaults
Model 2500A225B 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 49: Theory Of Operation
3. THEORY OF OPERATION INTRODUCTION The Model 2500A225B RF amplifier consists of a .01-225 MHz RF amplifier assembly. The RF amplifier assembly consists of a Pre-Amplifier/driver amplifier module, and a two-way splitter that feeds (2) four-way splitters to drive (8) final amplifier modules. These 8 final amplifier modules are combined through (1) eight- way combiner to yield a combined power of 2500 watts or more. -
Page 50: A7 Eight-Way Combiner
POWER SUPPLIES The Model 2500A225B contains seven switching power supplies. The input voltage range to the power supply is 200–240 VAC, 50/60Hz. The AC input power is approximately 8500 watts. PS1, located in the driver assembly, is a multiple output supply. PS1 has a +5V, standby supply for the A5 control panel, the A1 remote interface board used for the remote interfaces, the -15V supplied to the A1 preamp, the A2 driver module and the A1-A8 final modules. -
Page 51: Control System
Model 2500A225B CONTROL SYSTEM 3.4.1 A5 Control/Fault Board The A5 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 offers... - Page 52 Model 2500A225B Rev B...
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Page 53: Maintenance
Section 4.3. 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 54: Cooling System
LDMOS and other ESD-sensitive devices. Troubleshooting the Model 2500A225B 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 55: General - Reading Faults
If the fault does not clear with the RF drive off, some other problem exists in the amplifier. The digital control panel of the 2500A225B indicates the output power from the 2500A225B 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 56: Level Fault
RF energy when these doors are opened. NOTE: The Model 2500A225B is shipped with a mating connector, which has a jumper between Pins 1 and 8 and 10 and 14, installed in the rear panel interlock connector. The unit will not operate unless the interlock circuit is closed. -
Page 57: Power Supply Faults (Schematic 10048570, 10049170)
Model 2500A225B 4. If the AC Interlock Fault will not clear, check for continuity in the External Interlock Circuit (Pin 10 to Pin 14 in the connector, which mate with J7 in the rear panel). 5. Check the voltage on A5A3 J5, pin 14; it should be < 0.1V. -
Page 58: Low Or No Power Output (Dc Tests) (Schematic 10048570, 10049170)
Low or No Power Output (DC Tests) (Schematic 10048570, 10049170) All indicators on the Model 2500A225B 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 59: Low Or No Power Output (Rf Test)
1. The Model 2500A225B’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 ≥ 63 dBm. - Page 60 Model 2500A225B 2. The typical response for the A1 Pre-Amplifier/Driver (at maximum gain setting) is shown in Figures 4-3 and 4-4. Figure 4-3. Typical A1 Pre-Amplifier/Driver Response -20dBm Input NOTE: The A1 Pre-Amplifier’s response may differ considerably—particularly in flatness—from the typical responses shown in the Figure 4-4.
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Page 61: Locating And Replacing Modules
LOCATING AND REPLACING MODULES Remove rack enclosure left side panels to gain access to Final modules. See Figure 4-5. Figure 4-5. 2500A225B, Right Side, Modules A1-A8. Disconnect the green connectors, the SMA input and output connectors and remove module top cover to access the eight socket head screws holding the module in place. -
Page 62: Sma Module Input
Model 2500A225B Figure 4-7. SMA Module Input Figure 4-8. Final Module RF Output Rev B... -
Page 63: Rf Module
Model 2500A225B Figure 4-9. RF Module *Contact factory for Work Instruction 10049970 prior to installing module.* Install replacement module and secure with eight socket head screws. Be sure to use the proper thermal grease on heat spreader. Reconnect input and output cable and reconnect connector. Ensure amplifier functionality before reinstall side and enclosure covers. - Page 64 Model 2500A225B Rev B...
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Page 65: Appendix A. Installing Software Upgrades
Appendix A. Installing Software Upgrades The 2500A225B has the capability to upgrade software. The first step that should be taken is to power-down the unit from the front panel. 1. Go to the AR Website and download the AR Firmware Upgrade Utility along with the model specific upgrade file for the device being upgraded. - Page 66 Model 2500A225B Rev B...
- Page 67 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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