Equipment information
Orban OPTIMOD-TV 8180A Effect Processor
Manufacturer:
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Model:
OPTIMOD-TV 8180A
Date:
1982
Category:
Group:
Description:
Information
Function of OPTIMOD-TV: OPTIMOD-TV is an integrated
signal-processing system which replaces conventional
compressors, limiters, and clippers. It is an adaptation of
the OPTIMOD-FM Model 8I00A to TV audio, and offers the TV
broadcaster the same superb audio quality that has made the
8I00A so popular among FM radio broadcasters.
Briefly, the OPTIMOD-TV system performs the following functions:
1. It rides gain over a range of as much as 25dB,
compressing dynamic range and compensating for gain riding
errors on the part of operators. The amount of dynamic range
reduction ordinarily produced is adjustable. When OPTIMOD-TV
is operated at its optimum release time setting, gain riding
and compression are virtually undetectable because of
advanced program-controlled time constants, level-dependent
gating, and multiband compression.
2. It controls potential interference to video and/or future
stereo services by means of bandwidth-limiting 15kHz lowpass
filters incorporating full overshoot compensation.
OPTIMOD-TV thus provides extremely tight control over peak
modulation, preventing overmodulation and controlling its
output spectrum simultaneously.
3. The OPTIMOD-TV compressor is a dual-band design which can
be operated with the bands independent of each other
("independent"), or such that the bands are coupled and
ordinarily track each other ("wideband"). When operated in
"independent" mode, OPTIMOD-TV can make audio quality more
consistent by correcting frequency balances between Bass and
midrange material. When operated in "wideband" mode, ‘
OPTIMOD-TV will preserve frequency balances and will produce
an output which sounds like its input.
k. OPTIMOD-TV prevents peak overload and overmodulation due
to the effects of the preemphasis curve.
Manual Type:
Service and User Manual
Pages:
124
Size:
5.48 Mbytes (5748613 Bytes)
Language:
english
Revision:
Manual-ID:
95026-000-02
Date:
1982 02 01
Quality:
Scanned document, all readable.
Upload date:
2017 10 30
MD5:
ded67a43f8c1c579c057a5db874dca0f
Downloads:
513
Information
Despite its weight, this Manual is intended to be concise
and easy to use. It is organized into two major sections.
The first contains information on how to plan your
installation, how OPTIMOD-TV interfaces with other station
equipment, how to set up and adjust OPTIMOD-TV, how to do a
Proof of Performance, and brief comments on routine
maintenance. You should read Parts I, 2, and 3 before
attempting to install OPTIMOD-TV.
The second section contains Appendices which provide useful
information that you may need at some time during the life
of OPTIMOD-TV. This is primarily reference material, and you
do not need to digest it to install, set up, or operate your
unit.
There is no Index, so the TABLE OF CONTENTS should be used
to help you find the information you want. The TABLE OF
CONTENTS provides an overview of the organization of the
manual, and lists in some detail the topics discussed.