Orban OPTIMOD-FM 8600, Operating Manual

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INSTALLATION ORBAN MODEL 8600
If you are using an Orban 8200ST external AGC:
If the STL uses preemphasis, its input preemphasis filter will probably introduce
overshoots that will increase peak modulation without any increase in average
modulation. We therefore strongly recommend that the STL transmitter’s preempha-
sis be defeated (freeing the STL from such potential overshoot) and that the 8200ST
be used to provide the necessary preemphasis.
If the STL transmitter’s preemphasis cannot be defeated, then configure the 8200ST
for flat output. In this case average modulation levels of the STL may have to be re-
Figure 2-4: 8200ST Jumper Settings (*Factory Configuration)