Sequerra 1 Owner's Manual

Manual is about: Model 1 FM Tuner Owner's manual

Summary of 1

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    C o n t e n t s president's letter guarantee c e r t i f i c a t e two warranty registration c e r t i f i c a t e s c e r t i f i c a t e of m e a s u r e d performance operational instructions installation instructions 1 front illustration 2 immediate operation 3 d e s c r i p t i o n of tuner d i...

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    The b e q u e r b a co..Mc 71-07 woodside avenue woodside.N.Y. 11377 (212) 651-4018 dear customer: i would like to take this opportunity to personally thank you for becoming one of the discerning individuals to own a sequerra m o d e l 1 f m tuner. This instrument represents a state of the art achie...

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    I n s t a l l a t i o n i n s t r u c t i o n s in installing the sequerra model 1 f m tuner, c e r t a i n precautions must be observed. F o l l o w the installation instructions c a r e f u l l y , and in sequence. It is advised that y o u familiarize yourself thor­ o u g h l y w i t h the p u s h...

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    Front illustration for immediate o p e r a t i o n ( a f t e r p r o p e r l y f o l l o w i n g i n s t a l l a t i o n i n s t r u c t i o n s ) e m p l o y p u s h b u t t o n s a s s h o w n by f u n c t i o n a r r o w s in t h i s i l l u s t r a t i o n . 5 1 7 4 2.

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    I m m e d i a t e o p e r a t i o n t o immediately operate the t u n e r (after it is p r o p e r l y connected and plugged in} w i t h o u t a fundamental understanding o f t h e various p u s h b u t t o n f u n c t i o n s , s i m p l y depress the lowest right- hand p u s h b u t t o n w h i c ...

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    D e s c r i p t i o n of t u n e r d i s p l a y s t h e t w o vertical r o w s o f six p u s h b u t t o n s each operate t h e f u n c t i o n s described o n their adja­ cent display w i n d o w s . T h e arrows w h e n l i t , p o i n t i n g t o the displays, w i l l indicate w h i c h displays...

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    When encountering excessive interference o r background noise, switch the separation t o h i blend. T h i s p o s i t i o n blends the high frequencies o f the left a n d right channels together providing a good c o m p r o m i s e , between moderate separation a n d moderate suppression, o f out-of...

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    Received under d i f f i c u l t c o n d i t i o n s , and t h e s e p a r a t i o n : h i blend p u s h b u t t o n does n o t s u f f i c i e n t l y eliminate undesirable noise. O f course, in t h i s m o d e , the p r o g r a m w i l l be heard in m o n o . It is also suggested t o have t h e m ...

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    Back jack panel f o c u s i n t e n s i t y -*a0]ust for very dim spot on ext vector position with no signal s c o p e v e r t . H o r . C e n t e r i n g 2 5 m s e c . D o l b y m u t i n g l e v e l d e t e c t o r o u t p u t p a n o r a m i c s w e e p w i d t h c e n t e r a c c e s s o r y f u...

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    D e s c r i p t i o n o f b a c k j a c k p a n e l the back jack panel has f o u r inputs, five o u t p u t s , an accessory socket, scope and pan adjust­ ments, a d o l b y converter, a fuse, the line c o r d , and the serial n u m b e r . F o l l o w i n g is a description o f their proper use. F...

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    6. S l o w l y t u r n i n t e n s i t y a d j u s t m e n t clockwise u n t i l a very d i m (barely visible) trace appears o n the scope's screen. It is i m p o r t a n t t o keep this trace e x t r e m e l y d i m . A u t o ­ matic brightening c i r c u i t r y w i l l adjust the i n t e n s i t ...

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    3. N o w depress the display:panoramic b u t t o n again. D o n o t t o u c h the t u n i n g k n o b , and if the station's p i p is o f f center, center the p i p b y adjusting the panoramic sweep center c o n t r o l . T o a d j u s t w i d t h : 1. Depress the display:panoramic p u s h b u t t o...

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    D e t a i l e d d e s c r i p t i o n o f scope a t h o r o u g h understanding o f the i n f o r m a t i o n shown by the oscilloscope's trace w i l l give an appreciation o f w h a l is being broadcast plus the q u a l i t y o f the broadcast. T h i s presents an o p p o r ­ t u n i t y t o make a...

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    3. Cross m o d u l a l i o n p r o d u c t s d u e t o the o u t o f band signals i.E.. Excessively strong television signals b e l o w the f m band and excessively strong a i r c r a f t signals above the f m band may produce spurious responses. 4. Clandestine f m transmitters i.E., bugging devices...

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    P a n o r a m i c g r a t i c u l e d e s c i r p t i o n s ' 4 0 0 k h z s p a c i n g s 2 m h z f r e q u e n c y s p e c t r u m i d e a l d y n a m i c r a n g e - 1 2 0 d b , l v t 0 0 d b , 1 0 0 , 0 0 0 u v • 8 0 d b , 1 0 , 0 0 0 u v 6 0 d b 1 , 0 0 0 u v 4 0 d b , 1 0 0 u v 2 0 d b , 1 0 u ...

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    Panoramic description of pips a . Tuned in station on center frequency. B . Alternate station 400 k h z off center frequency c . Alternate station 800 k h z off center frequency. Note: 3-pointed pip indicates station simultaneously broad­ c a s t i n g s c a . D . Adjacent station 200khz off center ...

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    T u n i n g 5 1 7 4 75 k h z spacings t y p i c a l (complete cycle) trace pattern amplitute (signal strength) n o i s e l e v e l n o i s e density graticule description trace descrldtlon for dynamic range see panoramic graticule description 1 5.

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    T u n i n g trace descriptions soft passages loud passages (full modulation) over/modulation by broadcaster (causes distortion) station not properly tuned off-tuned trace (showing sca s u b - carrier) weak station 5 1 7 4 station with low amplitude station with high amplitude 1 6.

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    T u n i n g multipath ideal trace (no multipath) multipath progressively worse (a trhough e ) . The long gentle curve of a i s preferable to b , e t c . In tuning to eliminate or minimize multipath, rotate your antenna to get the smoothest t r a c e . This w i l l be your best l i s t e n i n g p o ...

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    Tuner vector trace description left channel only r i g h t c h a n n e l u n l y no separation between channels (monophonic! Improper balance to the right l - r out.Of phase stereo 5174 little separation between channels (such as centrally placed soloist) maximum separation between channels 1 8.

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    External vector 4 channel trace description stereo l&r front inputs o n l y . (same as stereo for tuning vector) maximum separation stereo l&r rear inputs, only. Maximum separation 4 channel - maximum separation between channels 5174 front left channel only front right channel only rear right c h a ...

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    S i m p l i f i e d t h e o r y o f o p e r a t i o n the model 1 f m tuner is a superheterodyne f r e q u e n c y m o d u l a t i o n receiver consisting o f t w o r f subsystems, a stereo m u l t i p l e x decoder system, a d o l b y noise r e d u c t i o n system, an in­ s t r u m e n t t y p e x...

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    3. F m l i m i t e r the f m l i m i t e r provides a means o f removing all o f the a m noise p r o d u c e d f r o m the selected signal, leaving o n l y the zero axis crossing i n f o r m a t i o n t o be fed to the f m detector. T h e f m l i m i t e r also supplies the first f i v e decades o f...

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    Note: a l l counters have a potential a m b i g u i t y o f reading in the last digit. T h i s is defined as the readable resolution o f the counter. A s the stations frequencies are changed b y tuning the k n o b , i t is possible in an o f f station m o d e t o see a reading a m b i g u i t y in t...

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    300 a antenna model i fm tuner-simplified block diagram 2 3 tuning pot 7.4v to 32v 0.7mhi output multiplex dolby stereo pilot 25usecdolby 9-10 pan sweep local osc mixer l2.Imhrtoi4.Imhz iftf 2.4mh: sweep blanking regulateo power supply d -i5vdc + 33vdc +200vdc det output 5 1 7 4 mixer balunj rf amp ...

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    Rear view o f s o c k e t on back jack panel (enlarged 8 times). 1. +15 volt supply 2 . -15 volt supply 3 . Tuning bias supply 4 . Tuning potentiometer voltage output 5 . Front end t u n i n g voltage input 6. Front end tuning ground 7. C h a s s i s ground • 8. N . C . 9.. 25 usec d o l b y •"• • 1...

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    Cabinet m o u n t i n g instructions & t e m p l a t e remove for use.

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    Cabinet m o u n t i n g instructions (read and understand thoroughly before doing any cutting) this sheet i s designed for those wishing to house the tuner i n s i d e a cabinet with only the face of the tuner positioned to be v i s i b l e through the c a b i n e t ' s front p a n e l i n g , for c...

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    4. Now, p l a c e the "part a" template on the front outside surface of the c a b i ­ net, keeping line "a" a s the bottom, and a l i g n the points "b" with the 1/16" holes d r i l l e d through the c a b i n e t ' s p a n e l . W i t h the template in this p o s i t i o n , mark the four c o r n e...

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    Save all packing cartons and materials the s e q u e r r a c o m p a n y takes every precaution i n t h e m a n u f a c t u r i n g , testing, and packaging o f its e q u i p m e n t t o insure long life and t o preclude servicing. However, i f i t ever becomes necessary t o ship this u n i t , f o ...

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    5 ) 7 4 packing & repacking diagram - instructions be s u r e t o s a v e s h i p p i n g m a t e r i a l s a n d r e p a c k t u n e r a s s h o w n when s h i p p i n g ..

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    Spare parts list the spare p a r t s are found i n a packet f o l l o w i n g t h i s page. The packet c o n t a i n s : one bayonet #1815 bulb mounted i n the r e f l e c t o r s behind the d i s p l a y windows. For domestic (110-120 vac) u n i t s : one 1 amp slow-blow fuse for export (220-240 va...

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    T h e s e q u e r r a h p c o m p a n y , inc. 7 1 - 0 7 w o o d s i d e a v e n u e , w o o d s l o e , n . Y . 1 1 3 7 7.

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    Five year warranty registration certificate for t h e s e q u e r r a m o d e l i f m tuner s e r i a l n u m b e r — to register your five year warranty, please fill in the requested information below, on both copies of the registration certificates. Mail one certificate t o the sequerra company an...

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    Test m e a s u r e m e n t s (original on file at the sequerra company) 1. Volume s e n s i t i v i t y (2 db) 2. Q u i e t i n g m o n o 30 d b q u i e t i n g m o n o 50 db 60 db 70 db ultimate s / n 3 . Q u i e t i n g stereo 30 db 50 db 60 db 7c db ultimate s / n 4. T h d m o n o 1000 uv input 3...