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~---------------CONTENTS----------------~
PAGE
ELECTRICAL PERFORMANCE SPECIFICATIONS 3
CI RCUIT DESCRiPTION ,4-9
SWITCH FUNCTIONS 0-12
DISASSEMBLY INSTRUCTIONS 2
BLOCK DIAGRAM .
ADJUSTMENT PROCEDURES '-
CALIBRATOR SCHEMATIC.................................. . . . . .. .. -
TROUBLESHOOTING - SYMPTOM· CAUSE/REMEDY
i7- ':'
AMP P. C. B. (TOP & BOTTOM VI EWS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. ~
POWER SUPPLY
& METER P. C. B. (TOP & BOTTOM VI EWS) ~
SWITCH (L) P.
c. B. (TOP & BOTTOM VIEWS) 21
SWITCH (R) P.
c. B. (ROP & BOTTOM VIEWS) 22
SLIDE VOLUME (L) P.
c. B. (TOP & BOTTOM VIEWS) 23
SLIDE VOLUME (R) P. C. B. (TOP & BOTTOM VIEWS) 24
ELECTRICAL PARTS LIST 25-34
EXPLODED VIEW PARTS LIST 35-36
MISCELLANEOUS PARTS LIST 37
SCHEMATIC DIAGRAM
38-39
EXPLODED VIEW 40-41
-2-
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ELECTRICALPERFORMANCE
SPECIFICATIONS
(Unit)(Nominal)
(Limit)
Frequency response at flat position,
I nput level
=0.775 V (Hz)
5-100 K~U dB 5-100 K~?:5 dB
Control Frequency accuracy at 26, 32, 39 Hz
(%) ±5 ±10
at 47, 56, 68 Hz
(%) ±5 ±10
at 84,100,120 Hz
(%) ±5 ±10
at 150,180,215 Hz
(%) ±5 ±10
at 260,320,390 Hz
(%) ±5 ±10
at 470, 560, 680 Hz
(%) ±5 ±10
at 840, 1 K, 1.2 KHz
(%) ±5 ±10
at 1.5 K, 1.8 K, 2.15 KHz
(%) ±2.5 ±
5
at 2.6 K, 3.2 K, 3.9 KHz
(%) ±2.5 ±
5
at 4.7 K, 5.6 K, 6.8 KHz
(%) ±2.5 ±
5
at 8.4 K, 10 K, 12 KHz
(%) ±2.5 ±
5
at 15 K, 18 K, 21.5 KHz
(%) ±2.5 ±
5
(Output level
=0.775 V)
Control range at 0.775 V Input (dB)
+13.5+12~~·5
-13.5 -12~~.5
Harmonic Distortion at 1 V Output
from 20 Hz to 20 KHz
(%) 0.018 0.04
Hum and Noise ratio at 1 V Output (dB)
9085
(I nput shorted) (I H FA)
Dynamic Range into 10 Kn load (V/rms)
109
(All Controls should be Flat)
Input Impedance (Kn)75
Output Impedance at 1 KHz (n)10
Intermodulation Distortion at 1 V Output,
70/70 KHz at 4/1 ratio
(%) 0.02 0.05
Meter tolerance (F requency at 1 KHz)
at+12dBpoint (dB)±0.5±1.0
at OdBpoint (dB)±0.5±1.0
at-12dBpoint (dB)±0.5±1.0
at other points (dB)± 1.0± 1.5
NOTE: When each control range is measured, all other controls should be at center (0 dB).