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Whereas the TS-570 provided only a single slot for installing an optional filter, the TS-480 has two
slots, meaning that two of the three filters can be installed at the same time. And the process of
installation itself is quite easy: there is no need to remove the main unit, since the option installation
unit has been designed to be separately removable.
The photograph in Fig. 12 shows the option installation unit. This can be used to install not only
these IF filters but also a high-stability TCXO SO-3 (±0.5ppm, -10~+50°C), which is optionally
available.
Fig. 12: Option installation unit
If you unclip the white connectors on either side and remove the screw
s
that hold the board in place, you can independently remove the unit fo
r
installing the optional filters.
Since the type of filter is recognized automatically, it does not matter in
which order you install filters in the slots.