Orban Optimod-FM 8300 Operating Manual page 69

OPTIMOD-FM DIGITAL
In other countries, use a peak-indicating instrument as specified by the
regulatory authority in your country.
If you are required to implement the average modulation limits specified
by ITU-R 412-9, you may seldom see peaks hitting 75 kHz deviation. In
this case, we advise you to set the output level using the 8300's reference
400Hz tone.
B) Press the N
EXT
16. Set the digital output level.
A) Press the N
EXT
B) [Skip this step if you are not using the digital output.]
Turn the knob to set the desired digital output level corresponding to
100% modulation, in units of dB below full-scale.
The most accurate way to set this control is by observing a modulation
analyzer connected to your transmitter.
17. Set the analog output level.
A) Press the N
EXT
B) [Skip this step if you are not using the analog output.]
Turn the knob to set the desired analog output level corresponding to
100% modulation, in units of dBu (0 dBu = 0.776 Vrms).
The most accurate way to set this control is by observing a modulation
monitor or analyzer connected to your transmitter.
If you have set Analog Output Feeds: Monitor in step 10 on page 2-18,
the peak level will not be well controlled because no peak limiting has
been applied to this signal.
C) Press the N
EXT
If you activated the modulation setup tone in step (14.A) on page 2-20,
the tone will turn off automatically.
D) Press the N
EXT
You have now completed the guided Quick Setup procedure and are in
the normal R
to comply with the multiplex power ceiling specified in ITU-R 412-9, you
will also need to set up the 8300's Multiplex Power Controller by follow-
ing the instructions in step 20 on page 2-22.
18. Choose a processing preset.
A) Turn the knob until your desired preset is visible in the lower line of the dis-
play.
B) Press the R
ECALL
This step selects the processing to complement the program format of
button and repeat for C
button.
button.
button.
button.
P screen. However, if your country requires you
ECALL RESET
button to put your desired preset on-air.
N
EXT
O 2.
OMPOSITE UTPUT
2-21
INSTALLATION