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INTRODUCTION

The MOD V Stereo cinema processor is a full 8 channel
system delivering superior audio quality for any theatre.
This advanced processor comes standard with many fea-
tures, yet is easy to operate, making the unit the best buy on
the market. The MOD V is fully compatible with all digital
formats, and was designed to easily process 70mm and
35mm magnetic soundtracks. 

To achieve optimum results from your new MOD V cinema
processor, the theatre engineer installing the system should
be totally familiar with all features and adjustments. Careful
attention to detail and familiarity with the installation
instructions will allow you to offer a system that has a
sound quality second to none.

FEATURES

In addition to the standard features you find on other
processors, the MOD V offers many extras that makes oper-
ation easier and more flexible.

FADER CONTROL:
To begin, the MOD V has one MASTER FADER that con-
trols the overall playback level for all 8 channels. This mas-
ter fader is used as the volume control for all formats except
music mode. Seven trim controls on the front panel inde-
pendently fine tune adjust (± 3 dB) the volume level of each
format. The music control on the front panel is the master
music level control. The trim faders allow matched levels
when the MOD V transitions between various formats. This
unique feature allows the MOD V to operate without con-
stant attendance by a projectionist.

STATUS INDICATORS:
The operator control panel features a STATUS DISPLAY
readout that shows the mode the system is in at any time.
Red LED’s show which format is selected. The indicator
lights can be seen from a distance so it is not necessary to
be near the processor to verify the status. LED arrays on the
front panel indicate relative volume level for the five prima-
ry channels: Left, Center, Right, Left Surround and Right
Surround.

UPDATING FOR THE FUTURE:
Since the MOD V processor is totally modular, any new cir-
cuit developments or additional options may be added easi-
ly. This can be achieved by simply plugging in a new card
into the existing card cage when a factory exchange or
update promotion is offered. The system can stay up with
current and future technology at minimum expense.

MOD V COMPONENTS:
There are two main components included in the MOD V
system: the power supply and the card cage. There are also
several optional plug-in cards to give the system more fea-
tures and greater flexibility. The system cannot operate
without the two main components, but can operate without
the options. 

— POWER SUPPLY: 

A heavy duty fully-regulated power supply is furnished with
the MOD V processor. This bipolar supply is heavily fil-
tered and supplies ample current for both the positive and
negative 20 VDC supplies. This external power supply min-
imizes the chances of hum pickup when high gain electronic
circuits are placed in the same chassis as a power supply.
Also, the large power capacity of the supply provides a very
“stiff” voltage to all cards in the MOD V to prevent power
sag (momentary drop of the supply output due to heavy
loads). This gives excellent transient peak response and
superior stability. 

— CARD CAGE: 

The “working” part of the MOD V system is housed in a
card cage rack mount assembly that contains plug-in com-
ponent cards for easy servicing and future expansion of the
system. A theatre may elect to start with a basic OPTICAL
STEREO sound system, update to a digital stereo system,
and eventually an eight channel system with sub-woofer.
The SMART MOD V is fully equipped to handle your
expansion needs. The MOD V will easily handle magnetic
soundtracks with the addition of external magnetic preamps
and two more noise reduction cards that easily plug into the
main card cage. 

Installation and Service Manual

MOD V Digital/Optical Stereo Cinema Processor

Содержание MOD V

Страница 1: ...resulting from accident misuse or abuse lack of responsible care or failures not attributable to manufacturing defects except as provided herein SMART Devices Inc makes no warranties express or implie...

Страница 2: ...ls Left Center Right Left Surround and Right Surround UPDATING FOR THE FUTURE Since the MOD V processor is totally modular any new cir cuit developments or additional options may be added easi ly This...

Страница 3: ...the C version or later of the circuit board is the MAGNETIC NR switch which is used to select Type A or Type SR noise reduction for MAG prints This switch is normally set to MAG A Test points 1 3 loc...

Страница 4: ...evel from the stereo solar cells Electronic changeover circuitry between stereo pairs is built on the card to allow use in dual projector booths If the MOD V is installed in a single projector booth l...

Страница 5: ...Right Surround Channels Circuitry and operation is similar to the stage channel EQs except that it uses one octave EQs and there is no gain adjustment pot The top eight trimpots are for Left Surround...

Страница 6: ...ge synthesizer channels should be adjusted ONLY after the main stereo optical channels have been correctly adjusted The synthesizer levels should be set to be the same as other stereo channels so that...

Страница 7: ...rear to the MOD V processor Dress the wires for appearance and craftsman ship The wiring harness has a connector that plugs into the back of the MOD V Make sure to observe polarity As you are looking...

Страница 8: ...nal of the MOD V only Ground the other wire of the pair to the nearest ground terminal on the MOD V When the automation relay closes projector TWO of the MOD V will be enabled and the first pair of st...

Страница 9: ...place The factory default set ting of Stereo A should be adequate for most theatres However if a Stereo SR default is desired then all plug in cards must be removed along with the internal tray in or...

Страница 10: ...GI TAL inputs on the rear of the MOD V for the following checks Set the pink noise source level for 55 volts RMS You must use an analog meter to measure this voltage level Special Note The factory set...

Страница 11: ...in phase and flip the Digital Time Delay Surround Generator Card switch to the TEST position Turn the surround amp off Now adjust the Left Center and Right generator levels on the Front Stereo Generat...

Страница 12: ...while maintaining the best azimuth This is not easy but it is one of the most critical adjustments affecting the overall system performance and is often not done as well as it should be 5 Adjust the...

Страница 13: ...en turning off the sys tem MUSIC SELECTION It is likely that the sound system will be turned on before the arrival of the first audience of the day The MOD V powers up in Music mode If the music playe...

Страница 14: ...ur service meter and see a minimum DC offset If the opamp is showing a few volts at the output pin it is like ly that a bad capacitor or resistor is causing an input bias that forces the output of the...

Страница 15: ...l This will prevent them from breaking loose from vibration in the future REPLACEMENT PARTS If you have difficulty finding parts for this or any other SMART product The SMART Technical Support Departm...

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