OPTIMOD-AM DIGITAL
TROUBLESHOOTING
5-7
rate modulation monitor that is causing you to undermodulate the carrier. A station
may suffer from any combination of these problems, and they can have a remark-
able effect upon the overall competitiveness of a station's sound.
Section 1 of this manual provides a thorough discussion of system engineering con-
siderations, particularly with regard to minimizing overshoot and noise. Orban's
publication
Maintaining Audio Quality in the Broadcast Facility
(available for
download from
www.orban.com
) provides many suggestions for maximizing source
quality
Bear in mind that the average AM receiver has an audio bandwidth of 2-3 kHz and
relatively high amounts of nonlinear distortion. 9400 processing is specifically de-
signed to make the best of this class of receiver Nevertheless, even at their best, such
radios can never yield truly high quality sound.
Further, almost all AM transmitters have a sound of their own. The very latest
transmitters (using digital modulation schemes) will create an on-air sound that is
audibly superior to transmitters of older design because the new transmitters have
dramatically lower nonlinear distortion. This improvement is not subtle and is read-
ily audible even on average consumer radios.
Security Passcode Lost (When Unit is Locked Out)
Please see
If You Have Forgotten Your Passcode
on page 2-45.
Connection Issues between the 9400 and a PC, Modem, or Net-
work
Presets
: The more user presets you make, the more slowly the 9400 will respond
to front-panel commands. Delete any user presets you do not need.
Quick Setup
: On the Station ID screen (Quick Setup 9): Use Escape in place of
Cancel. The Cancel button will not work.
Software Updates
: Close any running Windows programs before attempting
to update.
Interrupted Software Updates
: If you canceled an update before it com-
pleted, wait at least one minute before attempting your next update.
Software Updates via Modem
: If you are updating via the modem, do not
change the “connection type” parameter on the 9400 while the modem is con-
nected or attempting to connect.
Security Passcode
: An
A
LL
S
CREENS
(administrator) security passcode is re-
quired for upgrading, regardless of whether you are using a Direct, Modem, or
Ethernet connection.
Summary of Contents for Optimod-AM 9400
Page 1: ...Operating Manual OPTIMOD AM 9400 Digital Audio Processor Version 1 2 Software...
Page 7: ...Operating Manual OPTIMOD AM 9400 Digital Audio Processor Version 1 2 Software...
Page 52: ......
Page 204: ......
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Page 260: ......
Page 261: ...OPTIMOD AM DIGITAL TECHNICAL DATA 6 29...
Page 267: ...OPTIMOD AM DIGITAL TECHNICAL DATA 6 35 CPU Module...
Page 273: ...OPTIMOD AM DIGITAL TECHNICAL DATA 6 41 RS232 BOARD PARTS LOCATOR...
Page 275: ...OPTIMOD AM DIGITAL TECHNICAL DATA 6 43 8300 POWER SUPPLY PARTS LOCATOR...
Page 284: ...6 52 TECHNICAL DATA ORBAN MODEL 9400 DSP BOARD PARTS LOCATOR DRAWING 32170 000 14...
Page 292: ...6 60 TECHNICAL DATA ORBAN MODEL 9400 DISPLAY BOARD PARTS LOCATOR...
Page 293: ...OPTIMOD AM DIGITAL TECHNICAL DATA 6 61 DISPLAY BOARD...