Orban OPTIMOD 6200, Operating Manual

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OPTIMOD INSTALLATION
2-13
Installation of Studio Level Controller (optional)
Refer to “Gain Control before the STL” on page 1-11.
[Skip this section if you are not using a studio level controller ahead of the 6200. Con-
tinue with “System Setup” on page 2-23.]
If you are using Orban 8200ST-Studio Chassis
If the STL uses pre-emphasis, its input pre-emphasis network will probably
introduce overshoots that will increase peak modulation without any increase
in average modulation. We therefore strongly recommend that the STL trans-
mitter’s pre-emphasis be defeated (freeing the STL from such potential over-
shoot), and that the 8200ST be used to provide the necessary pre-emphasis.
If the STL transmitter’s pre-emphasis cannot be defeated, then configure the
8200ST for flat output. In this case, average modulation levels of the STL may
have to be reduced to accommodate the overshoots.
1. Configure the 8200ST’s internal jumpers.
A)
Remove all screws holding the 8200ST’s cover in place, then lift it off.
B)
Refer to Figure 2-5.
a) Place jumper JA in the “CLIPPER ON” position.
b) If you have defeated the STL transmitter’s pre-emphasis, place jumpers JE and
JF in the “PRE-EMPHASIZED” position.
c)
If you cannot defeat the STL transmitter’s pre-emphasis, place jumpers JE and
JF in the “FLAT” position.
C)
Replace the top cover, then replace all screws snugly. (Be careful not to strip the
threads by fastening the screws too tightly.)
2. Install the 8200ST in the rack. Connect the 8200ST’s audio input and
output.
Refer to the 8200ST Operating Manual if you require information about in-
stallation, audio input and output connections to the 8200ST.