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Orban 2300J Effect Processor
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Model:
2300J
Date:
2007
Category:
Group:
Description:
Information
Orban’s all-digital OPTIMOD-FM 2300 Audio Processor can help
you achieve excellent audio quality in FM stereo
broadcasting. Because all processing is performed by
high-speed mathematical calculations within Motorola
DSP56362 Digital Signal Processing chips, the processing has
cleanliness, quality, and stability over time and
temperature that is unmatched by analog processors.
Starting with V2.0 software, the 2300 can be used as an
extremely high-quality stand-alone stereo encoder operating
at 64 kHz to 512 kHz sample rates and offering lowpass
filtering, overshoot limiting, composite limiting, and an
ITU412 multiplex power Controller. When used in this mode,
the 2300 must be driven (usually via an STL) by a
fullfeatured FM audio processor (like Orban’s 8500) that
incorporates preemphasis-aware HF limiting and peak control.
OPTIMOD-FM 2300 is descended from the industry-standard
OPTIMOD-FM audio processors. Thousands of these processors
are on the air all over the world. They have proven that the
“OPTIMOD sound” attracts and keeps an audience even in the
most competitive commercial environment.
Because OPTIMOD-FM incorporates several audio processing
innovations exclusive to Orban products, you should not
assume that it can be operated in the same way as less
sophisticated processors. If you do, you may get
disappointing results.
Take a little time now to familiarize yourself with
OPTIMOD-FM. A small investment of your time now will yield
large dividends in audio quality.
The rest of Section 1 explains how OPTIMOD-FM fits into the
FM broadcast facility. Section 2 explains how to install it
and set it up. Section 3 tells how to operate
OPTIMOD-FM. Sections 4 through 6 provide reference
information. OPTIMOD-FM was designed to deliver a high
quality sound while simultaneously increasing the average
modulation of the channel substantially beyond that
achievable by “recording studio”-style compressors and
limiters. Because such processing can exaggerate flaws in
the source material, it is very important that the source
audio be as clean as possible. For best results, feed
OPTIMOD-FM unprocessed audio. No other audio process-
ing is necessary or desirable. If you wish to place level
protection prior to your studio/transmitter link (STL), use
an Orban studio level control system expressly designed for
this purpose. (At the time of this writing, this is the
Orban 8200ST OPTIMOD-Studio Compressor / Limiter /
HF Limiter / Clipper.) The 8200ST can be adjusted so that it
substitutes for the broadband AGC circuitry in OPTIMOD-FM,
which is then defeated.
Manual Type:
Service and User Manual
Pages:
258
Size:
4.47 Mbytes (4682374 Bytes)
Language:
english
Revision:
Manual-ID:
96122.202.01
Date:
2007 09 01
Quality:
Electronic document, no scan, very well readable.
Upload date:
2017 10 22
MD5:
a8d04c5887cb74833638a89b9afc7104
Downloads:
976
Information
Section
1
Introduction
... 1-1
ABOUT THIS
MANUAL ... 1-1
THE OPTIMOD-FM 2300 DIGITAL AUDIO PROCESSOR
... 1-1
User-Friendly
Interface ... 1-2
Absolute Control of Peak
Modulation ... 1-2
Flexible Configuration
... 1-3
Controllable
... 1-4
Stand-Alone Stereo Encoder Operation
... 1-5
PRESETS IN OPTIMOD-FM
... 1-6
Factory Presets
... 1-6
User Presets
... 1-6
I NPUT/OUTPUT CONFIGURATION
... 1-7
Digital AES3 Left/Right Input/Output
... 1-7
Analog Left/Right
Input/Output ... 1-8
Stereo Analog Baseband Composite Output
... 1-8
Subcarriers ... 1-8
Remote Control Interface
... 1-9
Computer Interface
... 1-10
RS-232 Serial Port
...
1-10
RJ45 Ethernet Connector
...
1-10
Optimal Control of Peak Modulation Levels
... 1-10
Best Location for OPTIMOD-FM
... 1-11
If the Transmitter is not
accessible: ...
1-12
If the Transmitter is accessible:
...
1-12
STUDIO-TRANSMITTER LINK
... 1-14
Transmission from Studio to
Transmitter ... 1-14
Digital Links
...
1-14
Composite Baseband Microwave
STLs ...
1-15
Dual Microwave
STLs ...
1-16
Analog Landline (PTT / Post Office
Line) ...
1-17
Using the Orban 8100AST (or 8100A/ST) External AGC with the
2300 ... 1-17
STL and Exciter Overshoot
... 1-17
USING LOSSY DATA REDUCTION IN THE
STUDIO ... 1-18
ABOUT TRANSMISSION LEVELS AND METERING
... 1-18
Meters
... 1-18
Studio Line-up Levels and Headroom
... 1-19
Fig. 1-1: Absolute Peak Level, VU and PPM
Reading ... 1-19
Transmission
Levels ... 1-19
LINE-UP FACILITIES
... 1-20
Metering of
Levels ... 1-20
Composite Output Level
...
1-20
Built-in Calibrated Line-up
Tones ...
1-20
Built-in Calibrated Bypass Test
Mode ...
1-21
MONITORING ON LOUDSPEAKERS AND
HEADPHONES ... 1-21
EAS TEST
... 1-22
PC CONTROL AND SECURITY P ASSCODE
... 1-2
WARRANTY , USER
FEEDBACK ... 1-23
User
Feedback ... 1-23
LIMITED WARRANTY
... 1-23
INTERNATIONAL WARRANTY
... 1-24
EXTENDED WARRANTY
... 1-24
Section
2
Installation
... 2-1
INSTALLING THE
2300 ... 2-1
Figure 2-1: AC Line Cord Wire
Standard) ...
2-2
Figure 2-2: Wiring the 25-pin Remote Interface Connector
... 2-4
2300 REAR PANEL
... 2-5
INPUT AND OUTPUT CONNECTIONS
... 2-6
Cable ... 2-6
Connectors
... 2-6
Analog Audio
Input ... 2-6
Analog Audio Output
... 2-7
AES3 Digital Input and
Output ... 2-7
Composite Output and Subcarrier Input
... 2-8
Figure 2-3: Separation vs. load capacitance
...
2-9
Grounding ... 2-10
Power
Ground ... 2-11
Circuit Ground
... 2-11
2300 FRONT PANEL
... 2-11
STUDIO LEVEL Controller INSTALLATION (OPTIONAL)
... 2-13
If you are using Orban 8200ST external AGC
... 2-14
Figure 2-4: 8200ST Jumper Settings (*Factory Configuration)
... 2-15
QUICK SETUP (AUDIO PROCESSOR MODE)
... 2-16
Setup for Stand-Alone Stereo Encoder Mode
... 2-24
ANALOG AND DIGITAL I/O SETUP
... 2-29
AUTOMATION USING THE 2300’S INTERNAL CLOCK
... 2-35
SECURITY AND PASSCODE PROGRAMMING
... 2-37
To Create a Passcode:
... 2-38
To Edit a
Passcode: ... 2-39
To Delete a Passcode:
... 2-39
To Lock the Front Panel
Immediately: ... 2-39
To Program local lockout:
... 2-39
To Unlock the Front Panel:
... 2-40
Dial-up Networking and the
Passcode ... 2-40
If You Have Forgotten Your
Passcode ... 2-40
REMOTE CONTROL INTERFACE PROGRAMMING
... 2-41
NETWORKING AND REMOTE CONTROL
... 2-42
SYNCHRONIZING OPTIMOD TO A NETWORK TIME SERVER
... 2-44
Table 2-1: NIST-referenced timeservers
...
2-45
INSTALLING 2300 PC REMOTE CONTROL SOFTWARE
... 2-48
Installing the Necessary Windows
Services ... 2-48
Check Hardware Requirements
... 2-48
Running the Orban Installer
Program ... 2-49
Setting Up Ethernet, LAN, and VPN Connections
... 2-50
Conclusion ... 2-50
APPENDIX: SETTING UP SERIAL
COMMUNICATIONS ... 2-51
Preparing for Communication through Null Modem Cable
... 2-51
Connecting Using Windows 2000 Direct Serial
Connection: ... 2-51
Connecting Using Windows XP Direct Serial Connection
... 2-56
Preparing for Communication through Modems
... 2-61
Connecting Using Windows 2000 Modem Connection
... 2-61
Connecting using Windows XP Modem Connection
... 2-67
UPDATING YOUR 2300’S
SOFTWARE ... 2-73
Section
3
Operation
... 3-1
2300 FRONT PANEL
... 3-1
I NTRODUCTION TO
PROCESSING ... 3-3
Some Audio Processing
Concepts ...
3-3
Distortion in Processing
...
3-3
Loudness and Distortion
...
3-4
OPTIMOD-FM—from Bach to Rock
... 3-4
Fundamental Requirements: High-Quality Source Material and
Accurate
Monitoring ... 3-5
ABOUT THE 2300’S SIGNAL PROCESSING FEATURES
... 3-6
Signal
Flow ... 3-6
Stand-Alone Stereo Encoder Mode
...
3-9
ITU-R BS412 Compliance
... 3-10
Two-Band Purist Processing
... 3-10
CUSTOMIZING THE 2300’S SOUND
... 3-10
Basic
Modify ... 3-11
Full Modify
... 3-11
Advanced Modify
... 3-12
Gain Reduction Metering
... 3-12
To Create or Save a User Preset
... 3-13
F ACTORY PROGRAMMING PRESETS
... 3-14
Table 3-1: Factory Programming
Presets ...
3-15
THE 2300’S AUDIO PROCESSING CONTROLS DESCRIBED
... 3-16
Equalizer Controls
... 3-17
Table 3-2: Equalizer
Controls ...
3-18
Stereo Enhancer Controls
... 3-20
Table 3-3: Stereo Enhancer Controls
...
3-20
AGC
Controls ... 3-21
Table 3-4: AGC Controls
...
3-22
Advanced AGC
Controls ... 3-24
Clipper Controls
... 3-26
Table 3-5: Clipper Controls
...
3-27
Two-Band Controls
... 3-30
Table 3-6: Two-Band Controls
...
3-30
Advanced Two-Band Controls
... 3-33
ITU-R MULTIPLEX POWER Controller
... 3-34
Figure 3-1: Multiplex Power over 15 Minute Observation
Interval with MPX Power
Controller Active, measured at Optimod’s Composite
Output ... 3-34
Multiplex Power
Threshold ...
3-34
Audio Processing and the Multiplex Power Threshold
Control ... 3-35
Multiplex Power Control in Stand-Alone Stereo Encoder
Mode ... 3-35
TEST MODES
... 3-36
Table 3-7: Test Modes
...
3-36
GETTING THE Bass SOUND YOU W ANT
... 3-36
USING THE 2300 PC REMOTE CONTROL SOFTWARE
... 3-38
To set up a new connection:
... 3-39
To initiate communication:
... 3-39
To modify a control
setting: ... 3-40
To recall a
preset: ... 3-40
To save a user preset you have created:
... 3-41
To back up User Presets, system files, and automation files
onto your computer’s
hard
drive: ... 3-41
To restore archived presets, system files, and automation
files: ... 3-42
To modify INPUT/OUTPUT and SYSTEM SETUP:
... 3-43
To modify AUTOMATION:
... 3-43
To group multiple 2300s:
... 3-43
Operation Using the Keyboard
... 3-44
To Quit the
Program ... 3-44
About Aliases created by Optimod 2300 PC Remote Software
... 3-44
Multiple Installations of Optimod 2300 PC Remote
... 3-45
Section
4
Maintenance
... 4-1
ROUTINE MAINTENANCE
... 4-1
SUBASSEMBLY REMOVAL AND REPLACEMENT
... 4-2
FIELD AUDIT OF
PERFORMANCE ... 4-6
Table 4-1: Decoder Chart for Power Supervisor
...
4-9
Table 4-2: Layout Diagram of J7, with expected voltages on
each pin ... 4-9
Table 4-3: Typical Power Supply Voltages and AC Ripple
... 4-9
Section
5
Troubleshooting
... 5-1
PROBLEMS AND POTENTIAL SOLUTIONS
... 5-1
RFI, Hum, Clicks, or Buzzes
...
5-1
Unexpectedly Quiet On-Air Levels
...
5-1
Poor Peak Modulation Control
...
5-1
Audible Distortion On-Air
...
5-2
Audible Noise on Air
...
5-3
Whistle on Air, Perhaps Only in Stereo
Reception ...
5-3
Interference from stereo into SCA
...
5-4
Fig. 5-1: Typical 2300 baseband spectrum with heavy
processing, 0-100 kHz. ... 5-4
Shrill, Harsh
Sound ...
5-5
Dull
Sound ...
5-5
System Will Not Pass Line-Up Tones at 100% Modulation
... 5-5
System Will Not Pass Emergency Alert System (“EAS” USA
Standard) Tones at the
Legally Required Modulation Level
...
5-5
System Receiving 2300’s Digital Output Will Not
Lock ... 5-6
19 kHz Frequency Out-of-Tolerance
...
5-6
L–R (Stereo Difference Channel) Will Not Null with
Monophonic Input ... 5-6
General Dissatisfaction with Subjective Sound Quality
... 5-6
Security Passcode Lost (When Unit is Locked
Out) ...
5-6
Connection Issues between the 2300 and a PC, Modem, or
Network ... 5-6
Troubleshooting
Connections ... 5-7
You Cannot Access the Internet After Making a Direct or
Modem Connection to
the 2300:
... 5-8
OS-SPECIFIC TROUBLESHOOTING A DVICE
... 5-8
Troubleshooting Windows 2000 Direct
Connect: ... 5-8
Troubleshooting Windows 2000 Modem
Connect: ... 5-10
Troubleshooting Windows XP Direct Connect:
... 5-11
Troubleshooting Windows XP Modem Connect:
... 5-12
TROUBLESHOOTING IC OPAMPS
... 5-13
TECHNICAL
SUPPORT ... 5-13
F ACTORY SERVICE
... 5-13
SHIPPING INSTRUCTIONS
... 5-14
Section
6
Technical
Data
... 6-1
SPECIFICATIONS
... 6-1
Performance ... 6-1
Installation
... 6-2
CIRCUIT DESCRIPTION
... 6-5
Overview
... 6-5
Control Circuits
... 6-6
User Control Interface and LCD Display Circuits
... 6-6
Input
Circuits ... 6-8
Output
Circuits ... 6-9
DSP
Circuit ... 6-12
Power Supply
... 6-12
ABBREVIATIONS
... 6-13
PARTS LIST
... 6-14
Obtaining Spare Parts
... 6-15
Base Board
... 6-15
CPU Module
... 6-17
RS-232
Board ... 6-18
Power Supply
... 6-19
Input/Output (I/O) Board
... 6-20
DSP
Board ... 6-23
Display Board
... 6-24
SCHEMATICS AND PARTS LOCATOR DRAWINGS
... 6-25
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