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Instruments for Industry
903 South Second Street
Ronkonkoma, NY 11779
Phone: 631 467-8400

Fax:

631 467-8558

Email:

[email protected]

OPERATING AND MAINTENANCE

INSTRUCTIONS

MODEL S251-2KWP

WIDE BAND SOLID STATE AMPLIFIER

DOCUMENT NUMBER

S251-2KWPMNL V1.0

Содержание S251-2KWP

Страница 1: ... Industry 903 South Second Street Ronkonkoma NY 11779 Phone 631 467 8400 Fax 631 467 8558 Email info ifi com OPERATING AND MAINTENANCE INSTRUCTIONS MODEL S251 2KWP WIDE BAND SOLID STATE AMPLIFIER DOCUMENT NUMBER S251 2KWPMNL V1 0 ...

Страница 2: ...eets 17 5 0 PRINCIPALS OF OPERATION 5 1 Proper Usage And Warnings 18 5 2 Features Of The Amplifier 19 5 3 Level Control Board 20 5 4 Optional Features 20 6 0 AUTOMATIC LEVELING CONTROL ALC 6 1 ALC Features 21 6 2 Leveling Using The INT Mode 22 6 3 Leveling Using The EXT Mode 23 7 0 IEEE 488 INTERFACE OPTION 7 1 Introduction 26 7 2 Remote Initialization 26 7 3 GPIB Address 27 7 4 Status Commands 28...

Страница 3: ...PANEL ILLUSTRATION 10 3 0 FRONT PANEL DISPLAY START UP MENU 13 4 0 GPIB ADDRESS MENU 14 5 0 MAIN MENU STATUS DISPLAY 15 6 0 TURNING ON THE AMPLIFIER 16 7 0 S251 2KWP SCHEMATIC DIAGRAM 19 LIST OF APPENDICES SECTION APPENDIX DESCRIPTION PAGE 9 0 A AMPLIFIER DATA SHEETS 33 10 0 B DRAWINGS PACKAGE 34 ...

Страница 4: ...trouble free operation depends on you thoroughly reading through this manual and familiarizing yourself with its proper operation and usage Your Wide Band Amplifier comes with the following accessories be sure to check your packaging for the items listed below before disposing of the packaging CONTENTS For a typical Wide Band Amplifier Quantity Description 1 High Power Wide Band Amplifier Model S2...

Страница 5: ...The display also scrolls to provide the operator with operating status and self diagnostic fault indications The Amplifier is unconditionally stable and incorporates protection circuits that monitor and control the VSWR input and outputs so the amplifier cannot be damaged by any mismatched load The Amplifier may be equipped with an IEEE 488 BUS RS232 interfaces which allows the amplifier to be rem...

Страница 6: ...FI This warranty shall not apply to any IFI product that has been disassembled modified physically or electrically damaged or any product that has been subjected to conditions exceeding the applicable specifications or ratings IFI shall not be liable for any direct or consequential injury loss or damage incurred through the use or the inability to use any IFI product IFI reserves the right to make...

Страница 7: ...ed personnel 4 2 GENERAL SPECIFICATIONS The specifications listed below represent the minimum performance characteristics at the time of delivery SPECIFICATIONS Frequency Response 1000 2500 MHz Power Output Minimum 2000 Watts AC Source 100 230VAC 50 60 Single Phase Power Gain 63 dB Input Impedance Nominal 50 Ohms unbalanced Output Impedance Nominal 50 Ohms unbalanced Input Signal Levels 0 dBm 1 0 ...

Страница 8: ...e Input Protection circuit will activate if the input signal exceeds 3 dBm 2 0 mW and will automatically compensate for the increased input signal by reducing the gain of the preamplifier Even though the amplifier has an Input Protection Circuit overdriving the amplifier is not recommended refer to paragraph 5 1 2 for more details 4 3 3 Output Protection The S251 2KWP incorporates a microprocessor...

Страница 9: ...e displayed 4 3 5 Mismatch Protection The S251 2KWP is designed to operate with a tuned 50 Ohm load and should any mismatching of the 50 Ohm load occur the Reverse Power also called Reflective Power will increase producing a high VSWR The S251 2KWP microprocessor monitors the Reverse Power levels by utilizing a Dual Directional Coupler and begins to turn down the gain of the preamplifier when the ...

Страница 10: ...ion for the function and purpose of each control and status indicator is provided within paragraphs 4 4 1 and 4 4 2 S251 2KWP RF AMPLIFIER Front Panel Rear Panel Local Remote Switch AC PWR IEC Power Connector Amp ON OFF Switch ALC INPUT BNC Type Operate Standby Switch INTERLOCK BNC Type Fault Reset Switch IEEE 488 Connector Color Touchscreen Display RF Output N Type Female RF Input N Type Female F...

Страница 11: ...limits the 55 VDC Supply will activate A Power Supply Fault is displayed when the 55 VDC Power Supply voltage shuts down Hi VSWR When the Hi VSWR fault is displayed the amplifier is subjected to a condition where the Reflected Power exceeds 40 The microprocessor turns down the gain of the preamplifier and displays the Reverse Power on the LCD Display RMT LCL When remote displays on the front panel...

Страница 12: ...nter Clockwise CW produces a minimum gain Important Note If the amplifier is not equipped with this option the display will still indicate a GAIN percentage refer to Figure 5 0 This percentage indication is still controlled by Level Adjust Control but the both the Level Adjust Control and the corresponding GAIN percentage indication has no effect on the amplifier gain FLT RST The Reset Fault FLT R...

Страница 13: ...unit using the front panel ON OFF switch When the circuit breaker or AC Power On switch is energized An IFI Splash Screen will be displayed after the Microprocessor MPU booting cycle this whole process will be about 45 seconds The Screen in Figure 3 0 will appear after the booting process ...

Страница 14: ...ng the GPIB Address FIGURE 4 0 GPIB ADDRESS The GPIB Address can be changed by selecting the GPIB Button Pressing the Button will scroll through the numbers There are 31 numbers 1 through 31 4 5 4 Turning ON the Amplifier ...

Страница 15: ...e Temperature STATUS and Faults Forward FWD and Reflected RFL Status are continuously displayed FIGURE 6 0 TURNING ON THE AMPLIFIER Typical 1 From the MAIN MENU in Figure 6 0 press the STBY OPRT Soft Key and the color of the button will change to Green 2 The display will show the Main DC power supply Voltage and current as per AMPLIFIER operating data sheet enclosed in the manual ...

Страница 16: ...and meet the criteria to see any type of power of the amplifier The Front panel display what parameters are being read See Figure 7 If it does not meet the criteria No Signal or a Fault will display as shown in the figure below A pulse input is required to obtain output power ...

Страница 17: ...wer output of the amplifier using a calibrated Power Meter and a calibrated 30 dB Attenuator Pad by inducing an appropriate input signal level to obtain rated power output Once the appropriate signal level has been determined to obtain the desired power level the actual Front Panel Metering Indication correlates to that power level The amplifier data sheets provide the operator with the over all f...

Страница 18: ...ill automatically compensate for the increased input signal by reducing the gain of the preamplifier It is not advisable to overdrive any amplifier and depend on protection circuits to maintain proper gain control IFI makes available with each shipped amplifier specific amplifier data so the operator will know the proper input signal levels to more efficiently operate the amplifier Refer to the te...

Страница 19: ...RFL PWR MON 12V PS2 55V PS1 PA2 55V PS1 PA1 55V PS1 PA4 55V PS1 PA3 12V PS5 12V PS5 12V PS5 Vc 12V PS5 12V PS2 12V PS2 SIT 40dB PA1 700900 IN OUT 750mA 12V NQ_H 55V PA2 700900 IN OUT 750mA 12V NQ_H 55V PA3 700900 IN OUT 750mA 12V NQ_H 55V PA4 700900 IN OUT 750mA 12V NQ_H 55V DIV2 DIV 4W0 8G4 2G200W SUM 0 DEG 0 DEG 0 DEG 0 DEG DRVR1 700863 12V NQ_H 32V 33dB PREAMP1 700823 28V VVA1 500699 5 RF IN RF...

Страница 20: ... For further information regarding the ALC operation refer to Section 6 0 5 4 OPTIONAL FEATURES 5 4 1 Interlock Feature The Interlock Feature is an option for the S251 2KWP that utilizes an Electro Magnetic Interference EMI Testing Room door switch that is mounted to the door in such a manner that when opened the switch will automatically induce an ordered shut down of the amplifier and produce a ...

Страница 21: ...tput power levels In this mode the operator has full manual control of the amplifier including the input signal gain frequency and power output As a result the operator must be fully knowledgeable of the effects of these variables in relationship to the operating characteristics of the amplifier With this in mind the two most important factors are the dB flatness of the amplifier over the operatin...

Страница 22: ...nal voltage level 6 2 LEVELING USING THE INT MODE When in the INT position no outside controls are required The only equipment required is a frequency generator and the intended load The procedure to use Internal INT Leveling is described below 1 Turn the RF Level Potentiometer fully counter clockwise to Full Attenuation 2 Set the ALC Switch to the INT position 3 Set the Signal Generator to the pr...

Страница 23: ...stant RF drive voltage over the entire frequency range Full leveling at half the S251 2KWP rated output power is realizable with most reasonable load variations Extremely mismatched loads particularly those presenting near short circuit conditions to the amplifier will reduce the maximum voltage leveling capability of the system Load impedance variation from 50 Ohms to an open circuit will permit ...

Страница 24: ...nuation condition The ZEROATT command must be sent in order for the amplifier to be able to generate output power 7 3 GPIB ADDRESS The GPIB address of the amplifier is set by via the Front panel using the Control knob at the start up menu NOTES ON USING NATIONAL INSTRUMENTS GPIB CONTROLLERS In order for the amplifier to operate correctly with a National Instruments GPIB controller card the followi...

Страница 25: ...Attenuation xx of steps Response with Gain value GAIN XXXXX ATTDxx Decrease Attenuation xx of steps Response with Gain value GAIN XXXXX REQUEST STATUS Code AMPLIFIER STATUS STATUS STANDBY OPERATE FAULT FAULT DETIALED MESSAGE THERMAL FAULT PWR SUPPLY 1 FAULT PWR SUPPLY 2 FAULT If Applicable PWR SUPPLY 3 FAULT If Applicable PWR SUPPLY 4 FAULT If Applicable NO FAULTS ...

Страница 26: ...ly NOLEV Selects NO Leveling Optional INTLEV Selects INTERNAL Leveling Optional EXTLEV Selects EXTERNAL Leveling Optional QUIETOFF Selects QUIETING to OFF Optional QUIETAUTO Selects QUIETING to AUTO mode Optional QUIETSTATUS Returns Quieting mode of operation Optional QUIETING OFF QUIETING AUTO ZEROATT Sets the Amplifier for ZERO Attenuation Returns GAIN 00100 FULLATT Sets the Amplifier for FULL A...

Страница 27: ... 1 Enter a name and choose an icon 2 2 In the connect using box select Direct to Com1 2 3 Click OK 2 4 Select 9600 baud 2 5 In Data Bits select 8 2 6 In Parity Select None 2 7 In Stop bits select 1 2 8 In Flow control select None 2 9 Press enter 3 If you use Hyperterm steps 2 1 to 2 9 will set up Com1 to communicate at 9600 baud 8 bits and no parity with 1 stop bit 4 Turn amplifier line power ON T...

Страница 28: ...same as above Command Place unit in operate mode ASCII String sent to amplifier ON cr lf Hex equivalent of string 0x4f 0x4e 0x0d 0x0a Response None Response String from amplifier None Example of response N A Hex value of example N A Command Read forward power ASCII String to amplifier POWERFWD cr lf Hex equivalent of string 0x50 0x4f 0x57 0x45 0x52 0x46 0x57 0x44 0x0d 0x0a Action None Response Res...

Страница 29: ...en display blank No service voltages Check line power Check service voltages 12VDC 12Vdc 5VDC Connect AC line to specified Prime power source Refer to S N tag on unit Amp will not go to Operate mode Door interlock open Check that door interlock BNC connector is terminated with either 50 Ohms or short Power Supply fault Main Power supply faulty Check either for 32VDC Check on the LCD display for th...

Страница 30: ...y accessory could give the illusion that the equipment itself has failed For this reason it is important to return all the accessories with the equipment It is also IFI s policy to verify performance of all associated accessories of Section 1 0 before returning the equipment to service 8 3 3 Packaging The Equipment When returning equipment to the manufacturer always wrap each accessory separately ...

Страница 31: ...Page 31 APPENDIX A AMPLIFIER DATA SHEETS ...

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