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RECOMMENDED TEST EOUIPMENT
The following test equipment is recommended to completely test and align the Receiver.
.
Line Voltage lsolation Transformer.
o Two (2) Load Resistors.8-ohms,250Watts
o A C D C M u l t i m e t e r .
( M i r i i m u m R a t i n g )
.
Accurately Calibrated AC Voltmetey.
o Low-Distortion AM-FM Signal Generator
.
Oscilloscope (Flat to
'l
00 KHz Minimum)
o 10.7 MHz Sweep Generator
a Low-Distortion Audio Sine-Wave Generator
o Multiplex Generator
.
Harmonic Distortion Analyzer
.
455 kHz Sweep Generator
HARMONIC DISTORTION TEST
'
CAUTION: Limit the following tests to no more than ten
minutes each. Use 8-ohm resistors with a minimum power
rating of 250 watts when connecting a load across the
S P E A K E R S t e r m i n a l s .
C O N T R O L S E T T I N G S :
O N E C H A N N E L D R T V E N :
Unplug the AC power cord and set the front panel controls
1)Connect a low distortion audio generator to LEFT AUX
irs iuiivv"S,
lN jack
Set oenerator frequency to t kHz and output
T O N E c o n t r o l s a n d B A L A N C E c o n t r o l s t o c e n t e r p o s i t i o n s
t o m i n i m u m .
POWER sfvitch to OFF
2) connect an 8-ohm load resistor between SPEAKERS
i
S P E A K E R S s w i t c h t o P H O N E S
M A I N L E F T a n d C O M t e r m i n a l s .
FUNCTION switch to AUX
Connect a Harmonic Distortion analyzer and an AC
H I G H & L O W , F I L T E R , M O N O M O D E , L O U D N E S S C O N -
V T V M i n p a r a l l e l a c r o s s t h e S o h m l o a d .
T O U R a n d T A P E M O N I T O R s w i t c h t o O F F a n d S O U R C E
3 ) C o n n e c t t h e A C p o w e r c o r d a n d s e t S P E A K E R S s w i t c h
V O L U M E c o n t r o l t o M I N I M U M p o s i t i o n
t o M A I N . T u r n V O L U M E c o n t r o l t o M A X .
L E F T C H A N N E L D R I V E N
4 ) I n c r e a s e g e n e r a t o r o u t p u t f o r
R S - 1 0 6 0 1 2 5 W R M S ( 3 1 . 6 V a c r o s s t h e 8 - o h m l o a d )
R S - 1 0 8 0 1 7 0 W B M S ( 3 6 . 8 V a c r o s s t h e B - o h m l o a d )
H a r m o n i c D i s t o r t i o n A n a l y z e r s h o u l d m e a s u r e a p p r o x i -
m a t e l y 0 . 1 o 0 d i s t o r t i o n .
5 ) R e p e a t s t e p s
' l
t h r o u g h 4 f o r R I G H T C H A N N E L .
B O T H C H A N N E L S D R I V E N
C o n n e c t B - o h m l o a d r e s i s t o r s a c r o s s L E F T a n d R I G H T M A I N S P E A K E R S t e r m i n a l s P u s h d o w n " M O N O " s r y i t c h . A d j u s l
g e n e r a t o r o u t p u t a n d " B A L A N C E " c o n t r o l f o r R S - ' 1 0 6 0 : 1 2 5 W / R S 1 0 8 0 : 1 7 0 W a t L e i t a n d R i g h t C h a n n e l s
( R S 1 0 6 0 : 3 1 . 6 V
/ R S - 1 ß 0 : 3 6 . 8 V ) a c r o s s t h e 8 - o h m l o a d s . H a r m o n i c D i s t o r t i o n A n a l y z e r s h o u l d m e a s u r e a p p r o x i m a t e l v 0 . 1 o / o d i s t o r t i o n a 1
e a c h c h a n n e l .
- a _
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