Optimod-AM 9400 V1.2 Operating Manual - Orban

2-22
INSTALLATION ORBAN MODEL 9400
14. Set the analog output level.
A) Press the NEXT button.
B) [Skip this step if you are not using the analog output.]
This Quick Setup procedure adjusts Analog Output #1. If you are also using
Analog Output #2 (to drive a second transmitter, for example), you
can adjust it after you complete Quick Setup.
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 oscilloscope connected to your transmitter.
C) Press the NEXT button.
If you activated the modulation setup tone in step (12.A) on page 2-21,
the tone will turn off automatically.
D) Press the NEXT button.
15. Choose a processing preset.
A) Turn the knob until your desired preset is visible in the lower line of the display.
B) Press the RECALL NEXT button to put your desired preset on-air.
This step selects the processing to complement various program formats.
After this step, you can always select a different processing preset, program
the 9400 to automatically change presets on a time / date schedule,
use a GPI input to trigger preset changes, modify presets to customize
your sound, and store these presets as User Presets.
Preset names are just suggestions. Feel free to audition different presets
and to choose those whose sound you prefer. Your preferred preset
might not be named for your format.
You can easily modify a preset later with the 9400’s one-knob LESS-MORE
feature. Refer to Section 3.
Note that factory processing presets (but not user presets) change their
sonic characteristics depending on the setting of the system lowpass filter.
The switch occurs between 7.0 and 7.5 kHz. The presets for bandwidths
of 7.5 kHz and above are oriented toward radios with higher audio
bandwidth than are the presets for 7.0 kHz and below. In most cases,
the difference is the amount of HF equalization applied and the curve
shape of the equalizer.
Congratulations! You are now on the air with your initial sound. Feel free to
read the material in Section 3 of this manual, which describes the various presets
and how you can customize them to achieve your desired signature sound.
If your transmitter plant is not “textbook-perfect,” you can use the instructions
in the detailed setup procedure (following Quick Setup) to achieve highest aver-