Quick Setup - Orban OPTIMOD-FM 8500S Operating Manual

OPTIMOD-FM DIGITAL
D) Adjust the G
We recommend 8-15 dB gain reduction for most formats.
If the STL uses pre-emphasis, its input pre-emphasis network will proba-
bly introduce overshoots that will increase peak modulation without any
increase in average modulation. We therefore strongly recommend that
the STL transmitter's pre-emphasis be defeated (freeing the STL from
such potential overshoot), and that the 464A be used to provide the nec-
essary pre-emphasis.
If the STL transmitter's pre-emphasis cannot be defeated, configure the
8200ST for flat output. In this case, average modulation levels of the STL
may have to be reduced to accommodate the overshoots.

Quick Setup

Quick Setup guides you through 8500S setup. It is appropriate for users without spe-
cial or esoteric requirements. Following this section, you can find more detailed in-
formation regarding setup beyond the Quick Setup screens. In most cases, you will
not need this extra information.
For the following adjustments, use the appropriately labeled soft button to choose
the parameter you wish to adjust. To change a parameter (like an output level), it is
usually necessary to hold down the soft button while turning the knob. However, if
there is only one parameter on a screen (like choosing 50 or 75µs pre-emphasis), you
can change this with the knob alone. (You do not have to hold down a button.) Let
the text on the screen guide you through the process.
1. Press the front-panel Setup button.
2. Press the Quick Setup soft button when its label appears on the display.
Quick Setup presents a guided sequence of screens into which you must insert in-
formation about your particular requirements. In general, the screens are self-
explanatory.
Use the Next and Prev buttons to navigate between screens. These buttons will
flash to indicate that they are active.
If you leave Quick Setup before you complete all of the setup screens, re-
invoking Quick Setup will return you to the screen you were on before
you left Quick Setup.
3. Set the time.
Note that if your 8500S can be connected to the Internet via its Ethernet
jack, you can configure the 8500S's internal clock to sync to an Internet
timeserver. See Synchronizing Optimod to a Network Time Server on
page 2-54. If you intend to synchronize the 8500S's clock to a timeserver,
you may skip setting the time, date, and daylight savings time setting
steps below. In this case, press the Next button six times, or until "Select
R control for the desired amount of gain reduction.
AIN EDUCTION
2-15
INSTALLATION