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INSTALLATION AND OPERATING INSTRUCTIONS
R E C E IV E R L O C A T IO N S
T h e r e c e i v e r m a y b e p la c e d a n y w h e r e in the r o o m , but
f o r g r e a t e s t s a t i s f a c t i o n it s h o u ld be l o c a t e d .
1.
A w a y f r o m an y b r ig h t lig h t that m a y f a l l d i r e c t l y on the
s c r e e n
o r
be
r e f l e c t e d f r o m it; th is in c lu d e s w in d o w s and
la m p s .
S o m e illu m in a t io n in the r o o m , o ff to on e s id e , is
d e s i r a b l e , h o w e v e r , to p r e v e n t e y e - s t r a i n .
2.
T o
p r o v id e
c o m f o r t a b l e v ie w in g and e a s e o f o p e r a t io n .
3.
A t l e a s t o n e - i n c h a w a y f r o m a w a ll to a llo w f o r c a b in e t
v e n t ila t io n .
T h is is v e r y im p o r ta n t .
A N T E N N A S
T h e c h o i c e o f t e l e v i s i o n an ten na d e p e n d s e n t i r e l y on the
l o c a t io n o f the r e c e i v e r w ith r e s p e c t to a ll t e l e v i s i o n s ta tio n
tr a n s m itt in g a n ten n a s in the a r e a .
ta in e d w h en the r e c e i v i n g an ten na is d i r e c t l y in lin e o f sig h t
w ith the t r a n s m itt in g an ten n a.
" B i l t - I n - T e n n a " .
A l l r e c e i v e r s u s in g t h e T S - 1 7 2 s e r i e s
t e l e v i s i o n c h a s s i s a r e e q u ip p e d w ith the M o t o r o l a " B i l t - I n -
T e n n a " , m o u n te d in s id e the c a b in e t , f o r u s e in g o o d s ig n a l
a r e a s .
W hen
th is
an ten na
is
u s e d , the fo llo w in g p r e c a u t io n s
sh o u ld b e o b s e r v e d f o r b e s t r e c e p t i o n :
1.
In o r d e r to g e t m a x im u m p e r f o r m a n c e and s a t i s f a c t o r y
p ic t u r e s f r o m the " B i l t - I n - T e n n a " , a m p le s ig n a ls f r o m the
t e l e v i s i o n s ta tio n m u s t b e p r e s e n t at the l o c a t io n o f the r e
c e i v e r s .
N o r m a lly , the
s t r e n g th
th r o u g h o u t the r o o m in w h ic h the r e c e i v e r is lo c a t e d .
th is r e a s o n , b e t t e r p i c t u r e s w ill b e o b ta in e d if the r e c e i v e r
is t r ie d in a ll p o s s i b l e l o c a t io n s in the v ie w in g r o o m and is
then p la c e d w h e r e the c l e a r e s t p ic t u r e s a r e r e c e i v e d f r o m
a ll s t a t io n s .
A v o id la r g e m e t a l l i c o b j e c t s , s u ch as r a d i a
t o r s , m e t a l p a n e ls , e t c .
2.
L a m p s , v a s e s and m e t a llic o b j e c t s , w h en p la c e d on top
o f
the
r e c e i v e r , m a y
a f fe c t the e f f i c i e n c y o f the " B i l t - I n -
T e n n a " .
In d o o r A n te n n a .
If
a d d itio n a l
in d o o r
an ten n a, p la c e d
on
u s e d .
T h e
an ten n a
s h o u ld be r o ta te d and the a r m s sh ou ld
b e
a d ju s te d
f o r
the b e s t s ig n a l, w ith no g h o s t s o r r e f l e c
t io n s .
N o r m a ll y , the
a r m s
c h a n n e ls
( 2 - 6 )
and
t e l e s c o p e d on the h ig h c h a n n e ls (7 -1 3 ).
O u td o o r A n te n n a .
T h e M o t o r o la " B i l t - I n - T e n n a " o r the
in d o o r typ e an ten na w ill g iv e s a t i s f a c t o r y r e c e p t io n in s t r o n g
s ig n a l
a r e a s ; bu t, if the r e c e i v e r is l o c a t e d in a fr in g e o r
w e a k s ig n a l a r e a , an o u t d o o r an ten na is r e c o m m e n d e d .
In a r e a s f r e e o f o b s t r u c t io n s and r e f l e c t i o n s , w ith in r e a
s o n a b le
p r o x i m i t y
to t e l e v i s i o n t r a n s m i t t e r s , a d ip o le and
r e f l e c t o r w ill p r o v e s a t i s f a c t o r y . S in c e s u c h an an ten na h as
a r e l a t iv e l y s m a ll band c o v e r a g e , a s p e c ia l an ten na c o v e r in g
a ll tw e lv e t e l e v i s i o n c h a n n e ls sh o u ld be u s e d i f it is d e s i r e d
T h e
r e c e i v e r is c o m p l e t e l y a d ju s te d at the f a c t o r y , so
n o r m a l l y n on e o t h e r than the fr o n t p a n e l c o n t r o l o p e r a tin g
in s t r u c t io n s n e e d be fo l l o w e d in p u ttin g the r e c e i v e r in o p e r
a tio n .
H o w e v e r , to
p r o v id e
2
M a x im u m p ic k - u p is o b
o f
the s ig n a ls w ill v a r y
F o r
p i c k - u p is n e c e s s a r y , an
o r
n e a r the r e c e i v e r , m a y be
s h o u ld be e x te n d e d on the lo w
SERVICE ADJUSTMENTS
f o r an y m is a d ju s tm e n t o f the
Scanned by mbear2k - Jan 2012
to r e c e i v e s t a t io n s on c h a n n e ls o f w id e ly s e p a r a t e d f r e q u e n
c i e s .
L o c a t i o n o f the an ten na s h o u ld b e d e c id e d f r o m the s t a n d
p o in t o f m a x im u m s ig n a l p i c k - u p .
s h o u ld
b e b r o a d s i d e to the t r a n s m it t in g a n ten n a and s h o u ld
b e a s h ig h as p o s s i b l e .
If a r e f l e c t o r is u s e d , the an ten na
s h o u ld
b e
o r ie n t e d s o that the d r i v e r e le m e n t is c l o s e s t to
the s t a t io n and the r e f l e c t o r fa r t h e s t a w a y .
L o c a t in g the a n ten n a and l e a d - i n as fa r a w a y as p o s s ib le
f r o m
h ig h w a y s , h o s p i t a ls , d o c t o r s ' o f f i c e s , e l e c t r i c a l m a
c h i n e r y , e t c . , w ill h e lp to r e d u c e n o is e p ic k - u p f r o m s u c h
s o u r c e s .
A l s o , it is d e s i r a b l e to k e e p the a n ten n a at le a s t
s ix fe e t a w a y f r o m o t h e r a n te n n a s , m e t a l r o o f s , g u t t e r s , o r
o t h e r
m e t a l
o b j e c t s
to
p r e v e n t
s h ie ld in g .
L e a d -I n .
S in c e the T S -1 7 2 c h a s s i s is d e s ig n e d f o r 300
o h m
in p u t, the
sta n d a r d
300 o h m tw in le a d lin e sh o u ld b e
u s e d
f o r
c o n n e c t in g
the
o u t s id e
T w is t in g the lin e o n e c o m p le t e tu r n p e r fo o t o f ru n n in g le n g th
h e lp s
to
r e d u c e
n o is e
p ic k - u p
s h o u ld
b e
s u p p o r te d
o n s t a n d - o f f i n s u la t o r s and k ep t tig h t
en ou g h
to
p r e v e n t
m e c h a n ic a l
A v o id
ru n n in g
the
l e a d - i n
s t a n d p ip e s , e t c .
In v e r y s t r o n g s ig n a l a r e a s , o r w h e r e s e v e r e l o c a l i n
t e r f e r e n c e
is
e n c o u n t e r e d , 300 o h m s h ie ld e d tw in le a d is
r e c o m m e n d e d .
T h e s h ie ld b r a id sh o u ld b e g r o u n d e d .
A n a p p r o v e d lig h tn in g a r r e s t o r sh o u ld b e u s e d .
R E C E IV E R A N T E N N A C O N N E C T IO N
T h e an ten n a l e a d - i n to the t e l e v i s i o n r e c e i v e r is c o n
n e c t e d
to
the tw o s c r e w s o f the t e r m in a l s t r ip on the r e a r
o f the c a b in e t .
D i s c o n n e c t the " B i l t - I n - T e n n a " le a d s f r o m
the t e r m in a l s t r i p b e f o r e a tta ch in g an e x t e r n a l an ten n a l e a d -
in . S o m e t im e s , r e v e r s i n g the l e a d - i n c o n n e c t io n s at the r e
c e i v e r m a y im p r o v e p ic t u r e q u a lity and o v e r a l l p e r f o r m a n c e .
O P E R A T IN G C O N T R O L S
T h e r e a r e tw o d u al c o n t r o l s , c o n s is t in g o f a s m a ll and
a la r g e k n ob e a c h , on the f r o n t p a n e l o f the r e c e i v e r .
F ig u r e 1 f o r fr o n t p a n e l c o n t r o l fu n c t io n s .
FIGURE I.
OPERATING CONTROLS
s e r v i c e c o n t r o l s , due to h a n d lin g , the fo llo w in g in s t r u c t io n s
a r e in o r d e r .
S ee F ig u r e 2 f o r lo c a t io n o f the s e r v i c e a d
ju s t m e n t c o n t r o l s .
In g e n e r a l , the an ten na
u n w an ted r e f l e c t i o n s and
a n ten n a to the r e c e i v e r .
on the lin e .
T h e l e a d - i n
d a m a g e
th r o u g h
s w a y in g .
c l o s e
to
m e t a l
g u t t e r s ,
ir o n
S ee
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