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Summary of Contents for Trio AG-202A
- Page 1 HIGH STABILITY AG-202A CR OSCILLATOR INSTRUCTION MANUAL T R I O...
- Page 2 F E A T U R E S F E A T U R E S • All solid state circuitry insures extremely high stability, minimum warm-up time and less power consumption. • Meter type frequency dial scale calibrated with single-scale graduations for frequency range ol 20 Hz - 200 kHz with a 4-position range...
- Page 3 SPECIFICATIONS SPFCIHCATIONS X 1 range: 20 - 200 App ox. 600H F r e q u e n c y r a n g e O u t p u t i m p e d a n c e Approx.
- Page 4 C I R C U I T DESCRIPTION C I R C U I T DESCRIPTION high input impedance circuit which employing an F E T S U M M A R Y (2SK30A-Y) Transistor 0 1 is the above mentioned F E T forming the initial stags.
- Page 5 C I R C U I T DESCRIPTION BLOCK DIAGRAM OF AG-202A OUTPUT ATTENUATOR The output attenuate* selects three attenuation! of 0 dB. - 2 0 d B or - 4 0 d B (1/1. »/10 or 1/100). When ced in the 0 dB position with the output attenuator turned fully clockwise, tho attenuator passes an output voltage of approximately 10V r.m.s.
- Page 6 External synchronizing signal input terminal, which Output terminals with output impedance o l approx. provides meais for connection of CR oscillator 6 0 0 f i . AG-202A to in external synchronizing signal WAVE FORM source. Output signal waveform selector switch.
- Page 7 P A N E L CONTROLS A N D T H E I R FUNCTIONS — E X T E R N A L V I E W...
- Page 8 Set F R E Q RANGE selector switch (7) to position X 100. Turn F R E Q U E N C Y dial until POINTER i l l ) i s is 3 V r.m.s. at 1 kHz and the AG-202A oscillating set to graduation 100 on frequency dial scale...
- Page 9 Using OUTPUT L E V E L control (81 and OUTPUT A T T switch (3) raise the input voltage (i.e. the output voltage of AG-202A) o1 the amplifier under starting with 0V and take readings of the output voltages appearing across the fixed load connected to the output circuit.
- Page 10 C H A R A C T E R I S T I C M E A S U R E M E N T Set up model AG-202A for an output voltage of 1 V and for an oscillating frequency of 1 kHz and apply the output of model AG-202A to the amplifier under test.
- Page 11 First apply the output of model AG-202A to the various conditions. input terminal (pick-up terminal) of the set under test with model AG-202A set up so as to deliver an output of Note, however, that the input signal to the amplifier 400 H? sine wave signal.
- Page 12 DC resistance or unbalance in the resistances of the transformer. Characteristics of an audio transformer which we are going to measure with the AG-202A in the following are its inductance and impedance. Fig. 7 Phase Characteristic Measurement...
- Page 13 R ohms and the signal frequency of the ohms impedance of a modulating transformer with a 10 AG-202A is (f) Hz, the inductance ( L ) H of the k ohms resistor. In this set-up, potentiometer VR is...
- Page 14 50 kHz or 80 kHz cannot be done with a regular test oscillator since it does not usually have frequencies below 100 kHz. If this is the case, the AG-202A will bo quite useful.
- Page 15 MAINTENANCE MAINTENANCE on the front and bottoTi edges of the side plates. Also, REMOVAL OF CASE tighten the screws at tie middle rear edges of the side Remove 3 setscrews each on the left and right side plates. plates with a Phillips head screwdriver. Caution: When removing the case from the chassis, pay attention not to toutch the internal...
- Page 16 M A I N T E N A N C E »5 REMOVAL OF FRONT PANEL To remove the from panel from this oscillator set, proceed as follows: Loosen the setscrews for 4 knobs on the panel and remove the knobs. Then, remove the left and right setscrews provided on the case directly behind the panel to fix both the case and panel in position.
- Page 17 A D J U S T M E N T S „ — . — — 16 A D J U S T M I-.NTS (Model AG-202A is shipped alter it is factory ADJUSTMENT OF DUTY RATIO OF adjusted about the following matters. When it is to be SQUARF. WAVE re-adjusted, however, proceed to the adjusting work only after the power source voltage is calibrated.)
- Page 18 (2) Set the pointer to graduation 20. Check that the oscillating frequency is within 200 Hz ± ( 3 % + 2Hz) (5) Avoid installing AG-202A where strong under the above condition. Also, check the level at magnetic or electric field or high temperature and the time.
- Page 19 PARTS LAYOUT PARTS L A Y O U T (FRONT VIEW)
- Page 20 P A R T S L A Y O U T PARTS LAYOUT (TOP VIEW) PARTS LAYOUT (BOTTOM VIEW)
- Page 21 PARTS L I S T PARTS L I S T O F AG-202A Description Circuit No. Parts No. R e m a r k s CAPACITOR O i f l m w 2 p F *0.2bpF C 1 0 2...
- Page 22 P A R T S L I S T Description Remarks Part* No. Circuit No. S h a l l coupling — D 2 2 - 0 0 1 1 - 0 5 Buof ing D 2 3 - 0 0 4 8 - 0 4 Terminal, type b a r e r a E 1 8 - 0 1 0 6 - 0 b black...
- Page 23 PARTS L I S T PARTS LIST OF X65-001 1 00 D e s c r i p t i o n R e m a r k s P i i r t s N o . C i r c u i t N o .
- Page 24 P A R T S L I S T Remarks Description Circuit No. Parts N o . R 3 4 R S 1 4 A B 3 A 6 8 1 J 6 8 0 « 1 5 % R 3 5 H S 1 4 A B 3 D 1 8 2 J Metal film 1.8kfi...
- Page 25 U O A H U PC BOARD (X65-0011-00)
- Page 27 A pri->€-(url or. T R I O - K E N W O O D C O R P O R A T I O N 17 5, 2-chome. Shibuya, Shibuya-ku. T o k y o » 5 0 , Japan j,c) 4 5 ! i 0 f l PHINTED IN J A P A N 1150-1 1 0 5 0 0 IT) M...
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