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Krohn-Hite 3103 Operating And Maintenance Manual

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WIDE RANGE
SOLID STATE
BAND-PASS FIL TE�
MODEL 3103CR) SERIAL ND.
OPERATING AND MAINTENANCE
MANUAL
KROHN-HITE CORPORATION
580 Massachusetts Ave., Cambridge, Mass. 02139 U.S.A .
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  • Page 1 WIDE RANGE SOLID STATE BAND-PASS FIL TE� MODEL 3103CR) SERIAL ND. OPERATING AND MAINTENANCE MANUAL KROHN-HITE CORPORATION 580 Massachusetts Ave., Cambridge, Mass. 02139 U.S.A . •...

  • Page 2: Table Of Contents

    • • CA LlBRA TION AND ADJUSTMENT I LLUSTRA TlONS Figure Page Model 3103 and 3103R Fiiters • Simplified Schematic Diagram . Normalized Filter Response . Square Wave Response ..Normalized Attenuation Characteristics . Normalized Phase Characteristics.
  • Page 3 Frontispiece Filter, Model 3103 Model 3103 i-{} C::;;;,;;;; Model 3103R Figure 1. Model 3103 and 3103R Filters •...

  • Page 4: General Description

    3103(R) Section General Des cription Filter, Model SECTION GENERAL DESCRIPTION INTRODUCTION As shown in the Simplified Schematic Dia­ 3103(R), gram. Figure 2. the Filter consists basically The Model illustrated in Figure 1, of an input amplifier. a variable low-pass s olid s tate variable electronic band-!)ass section (high cutoff frequency), and a varia­...
  • Page 5 Model 3103(R) Sec tion 1 - General Description RESPONSE switch on rear of chassis con­ SPECIFICATIONS verts to simple RC r,�sponse optimum for Frequency range: Low-cutoff frequE'ncy in­ transient-free performance� dependently adjustable from 10 llz t,) 1 MHz in five bands.

  • Page 6: Normalized Filter Response

    Filter. Model 3103(R) Section 1 - General Description FILTER CHARACTERISTICS TRANSIENT RESPONSE The frequency response characteristic of this Filter closely approximates a fourth-order Butterworth with maximal flatness, ideal for :< filtering in the frequency Gomain. For pulse "' or transient signal fi:.tering,...

  • Page 7: Normalized Phase Characteristics

    Section 1 - General Description Filter, ModeI 3103(R) PHASE RESPONSE with the low cutoff (f at 200 Hz, the high cutoff (f H ) at 600 Hz and an input frequency The phase angle at any frequency is the sum (f) at 300 Hz.

  • Page 8: Operation

    Cl·274 DEPT. LAB. TEST EQUIP. CONTROL CENTER Filter, Model 3103(R) Section 2 - Operation SECTION OPERATION INTRODUCTION The LOW CUTOFF FREQUENCY multiplier switch has five positions, covering the fre­ Cn receipt of the Filter� carefully - lnpack quency range as follow s: and examine it for damage that may have oc­...
  • Page 9 Filter, Model 3103(R) Section 2 - Operation d. Turn power switch to ON. noise (time domain) this switch should be in the RC position� NOTE 2.4 TERMINALS The left-hand band multiplier switch and fre­ BNC coaxial connectors are provided on the...
  • Page 10 Section 3 - Circuit D � scription Fe. H er, Model 3103(H) SECTION CI�CUIT DESCRIPTION INTRODUCTION LOW-PASS SECTION shown in the Simplified Schematic Dia­ The Low -Pass Section consists of a pair of gr lm� Figure 2 , the Filter consists of an two-pole filters each con' .

  • Page 11: Circuit Description

    �cction 3 Circuit Description Filter, lYlode13103(R) the proper response to give a Butterworth POWER SUPPLIES ch�lrackristic when cascaded. As in the The Power Supplies deliver a plus 10 and low-pass sl'ction emitter followers are used minus 10 regulated v.Jltage. It consists of a to isolate all the RC filter networks.

  • Page 12: Maintenance

    C E P T . C l- 2 7 4 [A B . T E S T EQ U IP . C O N T R O L C E N T E R Sec ' , i on 4 - Maintenance Filter, Model 3I03(R) SECTION MAINTENANCE...
  • Page 13 Section 4 Maintenance Filter, Model 3103(R) --,.-,--- PC301 RI15 o-CJ-t> � RI18 TOP VIEW PC303 PC30 P305 P302 ""-� �--- C325 ellS ;""' _ !,; P205 P206 ___ __ 3 2 4 PC302 BOTTOM V I EW Figure 7. Top and Bottom View of Chassis...

  • Page 14: Test Point Voltages

    Secticm 4 - Maintenance Fil:er, Model 3103(H) regulated supplies are used to provide Se t both the low and high cutoff frequencies pIu.:; 10 volts and minus 10 volts with respect to 300 Hz. Connect a 300 Hz 1 volt rms sine wave signal to the input terminals.
  • Page 15 Sf ction 4 - Maintenance Filter, Mod � l 3103(R) TUNING CIRCUITS For repbcement purposes, a capacitor . with­ in ±10/0 of the specified v&lue can be used with If signal tracing shows one of the tuning cir­ negligible effect on the overall calibration cvits to be faulty, it should be determined accuracy.
  • Page 16 Section 5 - Calibration and Adjustment Filter, Model 3103(R) 5ECTlON CAlIBRATlCIN AN D A DJUSTMENT PASS- BAND GAIN INTRODUCTION The following procedure is provided for the The Filter ,output voltage under open circuit purpose of facilitating the calibration and conditions will be within ± 1 2 db of the input adjustments of the Filter in the field.

  • Page 17: Detailed Test Procedure

    . Variable Auto-transformer - to adjust formance and correspondingly lower iLser­ line voltage. tion loss. In KROHN-HITE Filters, the re is A-C Voltmeter - to measure line voltage. no requirement for the load impedance to match the output impedance.
  • Page 18 Section 5 - Calibration and Adjustment Filkr, Model 3103(R) In the event the Filter does not meet the cor­ access to the trim capacitors C228� C319 rect tolerance as specified in each step of and C325. it is necessary to remove the the detailed test procedure.
  • Page 19 Section 5 - Calibration and Adjustment Filter, ModcI 3103(R) TABLE DET\ILED TEST PROCEDURE (Cont.) FREQUENCY SETTING INPUT SIGNAL VOLTS STEP PROCEDURE Dial Multiplier Dial Multiplier (RMS) Frequency 6.1. Set LCO dial to 90. Set output frequency to 900 kHz. Sw itch LCO multiplier to X IK position.
  • Page 20 \"".L"Lf't LAB, TEST EqUIP. CONTROL CENTER Filter, ModeI 3103(R) Sc"cbon 5 - Calibratio'l and Adjustment TABLE Dt�TAI .ED TEST PROCEDUHE (Cont.) iNPUT SIGNAL FREQUENCY SETTING VOLTS Frequency STEP PROCEDURE Dial Multiplier Dial Multiplier (RMS) Ilea dial gain calibration at 100 on...
  • Page 22 POWER SUPPLY SECTION - - - - - - - � !.lQ.! � 105 45 + l G " " R I 0 2 R I 0 4 0 1 0 \ C1D5 l . 5 tiRED AS SHOWN 11 1 1 3 B.
  • Page 23 PC302 H I G H CUT-OFF FREOUENCY CR10I " ", C201 R202 " R225 I !!: R203 lOOK R214 R 206 R201 fl21S " 4,3K R227 R214 CR202 " elK) JPUT TRIM - - - - � _ C201 lml C202 Imf S101 A 5201 B...
  • Page 24 :10' (LON PASS SECTION) 11 2 4 1 5 1 0 R229 0 2 1 1 R24£ R252 R 240 " n2D] " e22S R 2 4 6 lOOp! R235 R241 R249 R23S S . l K 4 . 3 K S i 0 "...
  • Page 25 J> '" u> '" � ,, 0 © © © © I:j) © © : 1 0 1 : \(I� lO� : i04 , 10:1 : 10!: : to7 C 3 2 0 : lOc , !Of , t i C 1 1 1 , 1 12 <D ©...
  • Page 26 -- - - - - - ------- - - -- --- RESISTORS 1':11': No. S: ' I1,bol Description Symbol Description P a r t No. : \ l f r . 1 0 1 .. -�--� �,-.- -,-,,-,-�,----- i � \\ L li l iH l H 2 3 B !l23f)
  • Page 27 APACITORS (COflt.) ,,.- D" , , , iption J\Ur. [',H't No. Symbol D('s c ription Mfr. P��rt NQ, BX.J842 C 3 0 3 32:nf 50/0 lDDV B 1:\32.J- ; lQ V C 2 0 7 . O:l2mf ;1"'70 B:\.J 84 1 CW·l •...

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