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MODEL

LAG-120A

AUDIO

GENERATOR

INSTRUCTION MANUAL

LEADER ELECTRONICS CORP.

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Содержание LAG-120A

Страница 1: ...MODEL LAG 120A AUDIO GENERATOR INSTRUCTION MANUAL LEADER ELECTRONICS CORP All manuals and user guides at all guides com a l l g u i d e s c o m ...

Страница 2: ... OPERATION 2 1 2 2 2 3 2 4 2 5 Preliminary Notes Interconnections Use of Sine Waves Square Wave Output Use of SYNC Connections MAINTENANCE 3 1 3 2 3 3 3 4 Fuse Replacement Exposing the Chassis AC Input Connections Circuit Checks and Adjustments PAGE 2 2 2 2 2 3 4 4 4 5 6 7 8 8 8 8 9 All manuals and user guides at all guides com ...

Страница 3: ...1 10Hz to IMHz in five decade bands Dial calibration within 3 lHz to 5d B across 600D Output Over 3Vrms into 600D Distortion 0 05 500Hz 20kHz 0 4 50Hz 200kHz 0 8 20Hz 500kHz 1 5 10Hz 1MHz Output Over 3Vp p into 600D Rise Time 200ns Sag 5 at 50Hz 600D 10 6 step attenuation and continuously adjustable Within 0 5dB across 600D at 1kHz reference 10Hz 1MHz Input Impedance Approx 10kD Control Range l V ...

Страница 4: ...tting of the FREQ RANGE switches Rear Panel Fig 1 2 J SY C terminals For connection to an external frequency control source black terminal is for ground Shorting link Normally connected across the SYNC terminals when the synchronizing input signal is not used j AC cord hooks 13 AC input cord FUSE holder For the AC line fuse t1 j lj 1 L I Hz r FREO RAN GE 1 2 0 P OItER 0 6 100 1 010 l 1C s c I A G ...

Страница 5: ...an lOVrms at the OUTPUT and SYNC terminals 4 Use short connecting leads Long unshielded leads will pick up extraneous noise long shielded leads will degrade the high frequency characteristics especially at square wave output 5 Allow about one minute for circuit stabilization after the AC power has been turned on Sine wave signals will show effects of clipping unless this precaution is taken 6 Pres...

Страница 6: ...put control ATTE ATION at SOdB and VARIABLE set fully counterclockwise Input Output Characteristic Set the FREQ RA TGE switch at xlOO and dial at 10 The input voltage to the amplifier is gradually increased by advancing ATTENUATION and VARIABLE The amplifier output voltage will increase as the input voltage is raised hen the amplifier is o erloaded there will be no apparent increase in output and ...

Страница 7: ... the dB indication is no ed and used in plotting the response curve NOTE Disregard the OdBm 0 775V etc in this case The dB readings can be directly used since the voltmeter is connected across a constant impedance The dB readings are added or subtracted from the 1kHz reference level Example Let dB at 1kHz _dB Assume that the measured values are as in A in the following data FREQ Hz 20 60 200 600 1...

Страница 8: ...and the waveform switch set at the sine wave position The indica ed value on the scope will be equal to the peak to peak output 01 tages The wa e o m selectOr switch is then set at the square wave position Disregard the oltme er reading I in doub hec the P p output voltage with a calibrated scope 2 It is ad isable 0 check the input waveform on a scope before application 3 Co e ion rom he SYNC outp...

Страница 9: ...te a frequency counter This voltage is not affected by the setting of ATTENUATION and VARIABLE 3 MAINTENANCE 3 1 Fuse Replacement When replacing the AC line fuse at rear of the case make certain that the proper rating is used see below LINE VOLTAGE 100 llSV 200 230V FUSE RATING 0 3A 0 3A If the fuse blows after replacement check the DC power supply circuits for defective capcitors or shorts in the...

Страница 10: ...n in Fig 3 2 VRI02 o VRI03 o CI02 VCI03 00 R 04 o c TPI02 VRIOI 0 o TPIOI Fi T_ Location of test points and adjusters De __ olc e P I O he olLa e should b e 40 O S I 0 d s R Ol ency at 1kHz e should be 17 0 3V _ ore uency at 1kHz and the waveform switch at square Se no at OdB and VARIABLE at full clockwise t to a scope with a fast rise time s 0 u 1 ig 3 3 the distances A and B should be equal F or...

Страница 11: ... 7 0 and 1030Hz If considerably off then set the dial so that the counter reads 1000Hz Loosen the set screw on the dial knob and position the dial at I against the index Tighten the set screw 3 Adjustments at other ranges are made with the dial set at 10 and the FREQ RANGE set at appropriate position FREQ RANGE x1k xl0 xl00k FREQUENCY 10kHz 100Hz 1 Hz 10 ADJUSTER VCl02 VRI02 VC103 All manuals and ...

Страница 12: ... GI04 011 lit 11111 It It lll 0 C 71 CIO ov Ov _ 1011 10011 nwt 9K 40V 1_ _t _ l III tU IHl I r tIl 01 _ h 1 11 10K RIJJ 10K 1 11 to 1111 11 III wI 3 RI 7 II J 91 III IO V 1 11 WAf 1 I e I 111 WY t1 1 I I V m f1 1 r i IIml Yr It I l M 1 43 1l LP IO 1600 J 10I I SYNCJ JIOZ WA r r EN f ATon IIlitO e 70 lOP K II WY 9 1 1147 4 711 If K R14 UK I1IZW 1 1 1 1 L ___________________________________________...

Страница 13: ... HIGASHI KOHOKU KU YOKOHAMA JAPAN PHONE 045 541 2121 TELEX J47780 JPLEADER LEADER INSTRUMENTS CORP 3800SER AVENUE HAUPPAUGE N Y 11788 U S A PHONE 516 231 6900 TELEX 510 227 9669 LEADER HAUP Printed in Japan All manuals and user guides at all guides com ...

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