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SECTION  3.0 

 

WARRANTY   INFORMATION 

 
 

Instruments For Industry, Inc.  (IFI)  warrants each product of its manufacture to be free from any 
defect in material and workmanship for a period of three years from shipment to the original 
purchaser.  All warranty returns, however, must first be authorized by our factory office 
representative.  Refer to the Service Section for information on how to return items for warranty 
repair. 
 
Warranty liability shall be limited to repair or replacement of, or part thereof, which proves to be 
defective after inspection by IFI.  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 design changes to any IFI product without incurring any obligation to 
make the same changes to previously purchased units. 
 
This warranty is the full extent of obligation and liability assumed by IFI with respect to any and all 
IFI products.  IFI neither makes, nor authorizes any person to make, any other guarantee or warranty 
concerning IFI Products. 
 

Содержание S251-250

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 250 WIDE BAND SOLID STATE AMPLIFIER DOCUM...

Страница 2: ...ets 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 Feat...

Страница 3: ...NEL 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 250 SCHEMATIC DIAGRAM 19 LIST OF APPENDIC...

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 accessori...

Страница 5: ...he 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 an...

Страница 6: ...I 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...

Страница 7: ...ied personnel 4 2 GENERAL SPECIFICATIONS The specifications listed below represent the minimum performance characteristics at the time of delivery SPECIFICATIONS Frequency Response 800 2500 MHz Power...

Страница 8: ...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 th...

Страница 9: ...be displayed 4 3 5 Mismatch Protection The S251 250 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 w...

Страница 10: ...us indicator is provided within paragraphs 4 4 1 and 4 4 2 S251 250 RF AMPLIFIER Front Panel Rear Panel Local Remote Switch AC PWR IEC Power Connector Amp ON OFF Switch ALC INPUT BNC Type Optional Ope...

Страница 11: ...imits the 50VDC Supply will activate A Power Supply Fault is displayed when the 50 VDC Power Supply voltage shuts down Hi VSWR When the Hi VSWR fault is displayed the amplifier is subjected to a condi...

Страница 12: ...control Counter 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 percen...

Страница 13: ...ower to the 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...

Страница 14: ...14 4 5 3 Entering 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 throu...

Страница 15: ...and Base Plate 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 S...

Страница 16: ...r 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 le...

Страница 17: ...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...

Страница 18: ...ATIC DIAGRAM 5 2 1 Preamplifier or Optional Preamplifier Attenuator The S251 250 amplifier has a preamplifier with approximately 10dB gain which is powered from an independent low voltage power supply...

Страница 19: ...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 250 that utilizes an Electro Magn...

Страница 20: ...put 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 t...

Страница 21: ...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...

Страница 22: ...tant RF drive voltage over the entire frequency range Full leveling at half the S251 250 rated output power is realizable with most reasonable load variations Extremely mismatched loads particularly t...

Страница 23: ...uation 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...

Страница 24: ...ttenuation 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...

Страница 25: ...y 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 mo...

Страница 26: ...wing 2 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 selec...

Страница 27: ...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 respo...

Страница 28: ...s Should servicing be required refer to Paragraph 8 3 8 2 1 TROUBLESHOOTING PROBLEM CAUSE SOLUTION COMMENTS Touchscreen display blank No service voltages Check line power Check service voltages 12VDC...

Страница 29: ...Page 29...

Страница 30: ...all the associated accessories described in Section 1 0 when returning the equipment for repair In many cases a faulty accessory could give the illusion that the equipment itself has failed For this r...

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

Страница 32: ...Page 32 APPENDIX B DRAWINGS BOM S251 250 BILL OF MATERIALS BOM 901031 INTERCONNECT S251 250...

Страница 33: ...400359 TOP HEATSINK LAYOUT HIGH BAND 1 R 1 11 S251 300 400365 BOTTOM HEATSINK LAYOUT LOW BAND 1 G 1 84 S251 300 500499 1 SWITCH LED BOARD ASSY 1 A 1 3 S251 300 500523 48 SS HALLEFFECT PS SENSING BD f...

Страница 34: ...G 16 PIN 1 A1 P8 1 16 S251 300 CON 102387 8 CONN IDC FEMALE WIRE APPLIED HOUSING 34 PIN 1 A1 P9 1 17 S251 300 CON 2201 12 CONN 12 PIN MOLEX 0 100in 1 A4 P1 1 18 S251 300 CON 2201 2 CONN 0 100in HOUSIN...

Страница 35: ...1 S251 300 HAN 245 26 HANDLE 6 0 in x 1 5 in OVAL BLACK OXIDE 10 32 THD SS 2 1 46 S251 300 HDW HOL 3092 HDW PLUG BLACK 1 2 HOLE H H SMI 1 8 PANEL THK 2 1 87 S251 300 HDW HOL 790 3158 HDW PLUG HOLE 5 8...

Страница 36: ...ERMINAL STRIP BLOCK DOUBLE 0 438 SPACING 20A 14 AWG 8 POS 6 32 1 1 57 S251 300 TER STR MS 8 141 MARKER TERMINAL STRIP 1 1 58 S251 300 TRM BNC50ITLK TERMINATION 5OHMS 1W BNC MALE WITH GROUND CABLE 1 w...

Страница 37: ...N AMP 1 480698 0 J126 CON AMP 1 480698 0 1 2 ATT7 ATT VAT36 2 ATT7 ATT VAT36 2 PA1 700900 PA1 700900 12V NQ_H 50V J125 CON AMP 1 480699 0 J125 CON AMP 1 480699 0 1 2 DET1 DET DZM185AA DET1 DET DZM185A...

Страница 38: ...E25 J9 3 PRF FAULT J9 4 DUTY FAULT J9 5 PW FAULT J9 6 VSWR INDICATOR J9 7 VSWR FAULT J9 8 THERMAL FAULT J9 9 INTERLOCK J9 10 FUTURE USE1 J9 11 FUTURE USE2 J9 12 FUTURE USE3 J9 13 FUTURE USE4 J9 14 FUT...

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