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Orban RET-041 Assembly, Installation And Operation Instructions page 7

Retrofit kit for optimod-am model 9100a/1 (mono)

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95307-000-01 6/87
RET-041 Instructions
page 7
5) Install Card #1F1O.
a) Remove Card #1 or #1-F from slot #1, if present.
b) Position jumpers A night) and B day) on Card #1F1O to select the desired low-pass
filter see Fig. 4).
You may select 5kHz, 10kHz, or 12kHz low-pass filtering in any combination for
day and night operation. The NRSC standard specifies 10kHz low-pass filtering
for both day and night
c) Insert Card #1F1O into slot #1.
#1F10
O o — • 5kHz — » QQ
[ooh — 10kHz — - fool NRSC as shipped)
O O - — 12kHz — * o o
JUMPER-B
DAY
JUMPER A
NIGHT
Fig. 4: Low-pass Filter Jumper Positions, Card #1 F1 0
6) Reinstall subpanel and close the front panel.
The sub anel should always be re laced, since it is an integral art of the chassis RFI
rotection.
a) Taking care not to stress the flat cables beneath it, tilt the top of the subpanel inward
and to the left to clear the upper chassis lip and the door support at the right
b) Turn the DZUS fasteners Mi-tum clockwise.
The DZUS fasteners turn only l / 4 -tum. Don ' t force them, lest they be damaged
in a way that is very time consuming to repair.
c) Set the internal AC POWER switch to ON.
d) Raise the front panel and fasten the three screws that secure it in place.

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