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Section 2 — Installation
The first bank of 8 switches, labeled on the module as MODE (S1), selects
one of several specialized tally functions.
ON AIR Tally is the normal, most commonly-used tally system (all DIP
switches OFF). When Mode 0 is selected, any input whose signal reaches
the Program Video or Program Key output is tallied. Table 2-3 shows the
switch settings for the mode switch.
When Mode 1, 2, or 3 (Iso Tally) is selected, the switcher tallies only the
inputs that contribute to the output of the corresponding M/E.
When Mode 4 (Individual Bus Iso Tally) is selected, the remaining six
banks of switches on the board (INDIVIDUAL BUS ENABLES 1—48) select
the switcher’s internal buses to be used as tally sources (see Table 2-4). For
example, with the Bus Enable switches set for buses 35 and 36 ON, if an
input were selected on bus 35 or 36, its corresponding relay would close.
The same input chosen on other buses would cause no relay closures. It is
possible to tally as many buses as desired simultaneously. Table 2-4 shows
the switch settings for each of the buses in Mode 4.
Table 2-3. Tally Mode Switch S1 Settings
DIP
Switch
Segment
ON AIR
Tally
Mode 0
M/E 1
Iso Tally
Mode 1
M/E 2
Iso Tally
Mode 2
Individual
Bus
Iso Tally
A
Mode 4
A. Iso tally for every bus having its associated DIP switch closed. Select the individual bus-
es as listed in Table 2-6.
Preset
(Look-
Ahead)
Tally
Mode 5
1 OFF ON OFF OFF ON
2 OFF OFF ON OFF OFF
3 OFF OFF OFF ON ON
4 OFF OFF OFF OFF OFF
5 OFF OFF OFF OFF OFF
6 OFF OFF OFF OFF OFF
7 OFF OFF OFF OFF OFF
8 OFF OFF OFF OFF OFF