User's Manual

TX RX Systems Inc. Manual 7-9485-1.9.1 10/26/17 Page 17
neously. Use the up or down arrow to set the level
change amount then press the submit button.
On start-up, the booster validates the
widths of programmed filters. If any
are configured wider than 75 KHz and
the booster is set to Class A mode an
error message as shown in Figure 9
will appear. The offending filter or fil-
ters must be corrected or the booster must be
switched to Class B mode. Refer to the System tab
discussion later in this manual for instructions on
switching from Class A to Class B mode of opera-
tion.
FILTER DETAIL TAB
The Filter Detail page is divided into three func-
tional areas. The first area includes a pair of drop
down boxes along with a row of command buttons
running down the left side of the screen. The sec-
ond area is a filter details area in the middle of the
screen. The third is a status area on the right side
of the screen as shown in Figure 10. Once you
have interactive access to the Filter Detail page
you can begin programming the individual filters
that you want the booster to pass in the uplink and
downlink direction.
The Filter Detail page is designed to interact with
one filter at a time. To program individual filters you
must select the branch and the filter of interest
using the Link and Filter boxes on the left side of
the screen. Once the filter has been selected for
interaction a label can be assigned to the filter by
typing into the name box. Three groups of charac-
teristics need to be defined including frequency
band, OLC, and filter specifics. Frequency band is
selected from a drop down list. Center Frequency
and Desired Output Power level must be entered
by the user by clicking in the box and typing in the
desired value. Likewise OLC style is determined
with a drop down box. The two choices are Custom
and APCO 25 Phase 2. OLC Hold time and OLC
Decay time must be entered by the user.
NOTE
Figure 8: The Filter Summary Tab.
Figure 9: Class A limit exceeded warning message.