3-58
OPERATION
ORBAN MODEL 8300
The control is located in the
S
ETUP
/
S
TEREO
E
NCODER
screen because the regulation
applies to all operation of the processor in a given installation.
If your country enforces the standard, you should set the control to complement the
amount of peak overshoot in the transmission system following your Optimod. Set-
ting the control at “0” will correctly control the multiplex power when there is no
overshoot after the 8300. This will typically be true when you are using your Opti-
mod’s built-in stereo encoder to drive the transmitter directly.
Section 1 of this manual has an extensive discussion of overshoot in transmission
paths. See page 1-13 and following pages.
Many paths have overshoot. This forces you to reduce the average modulation to
avoid overmodulating the transmitter. Reducing average modulation will reduce the
multiplex power by the same amount, forcing the multiplex power below the ITU
requirement.
To compensate for this, match the
ITU412-9
control to the peak overshoot of the
transmission system following the 8300. For example, if RF peak deviation exceeds
the peak deviation produced by the 8300’s sinewave oscillator (set for 100% modu-
Figure 3-1: Multiplex Power over 15 Minute Observation Interval
with MPX Power Controller Active, measured at Optimod’s Composite Output
Summary of Contents for 8300J
Page 1: ...Operating Manual OPTIMOD FM 8300 Digital Audio Processor Version 2 1 Software...
Page 7: ...Operating Manual OPTIMOD FM 8300 Digital Audio Processor Version 2 1 Software...
Page 24: ......
Page 94: ...2 46 INSTALLATION ORBAN MODEL 8300 This page intentionally left blank...
Page 190: ......
Page 204: ......
Page 246: ......
Page 247: ...OPTIMOD FM DIGITAL TECHNICAL DATA 6 29...
Page 254: ...6 36 TECHNICAL DATA ORBAN MODEL 8300 CPU Module...
Page 260: ...6 42 TECHNICAL DATA ORBAN MODEL 8300 8300 RS232 BOARD PARTS LOCATOR...
Page 262: ...6 44 TECHNICAL DATA ORBAN MODEL 8300 8300 POWER SUPPLY PARTS LOCATOR...
Page 264: ...6 46 TECHNICAL DATA ORBAN MODEL 8300 8300 I O BOARD PARTS LOCATOR...
Page 270: ...6 52 TECHNICAL DATA ORBAN MODEL 8300 DSP BOARD PARTS LOCATOR DRAWING 32170 000 14...
Page 278: ...6 60 TECHNICAL DATA ORBAN MODEL 8300 8300 DISPLAY BOARD PARTS LOCATOR...
Page 279: ...OPTIMOD FM DIGITAL TECHNICAL DATA 6 61 DISPLAY BOARD...