Casella CEL CEL-393 - Manual (Page 46)

Having selected the required filter bandwidth (full or third octave) sub-
sequent operation of the A key enables the band selected to be stepped
up from the 1kHz default. Alternatively the number code for any other
band can precede the A key to move directly to it. The stepping function
may then be used from the new start point.
The additional display mnemonics provided by the B version to indicate
the filter function or state are shown in Table 4. These new codes will
appear in the display mnemonic position in place of the parameter
mnemonic as they are selected.
5.2.2 Operation
Display
Mnemonic Function
200Hz band centre
250Hz band centre
315Hz band centre
400Hz band centre
500Hz band centre
630Hz band centre
800Hz band centre
1kHz band centre
2kHz band centre
3.1kHz band centre
4kHz band centre
5kHz band centre
6.3kHz band centre
8kHz band centre
10kHz band centre
12kHz band centre
16kHz band centre
20kHz band centre
Display
Mnemonic Function
All pass through filters
End of auto filter scan
6Hz band centre
8Hz band centre
10Hz band centre
12Hz band centre
16Hz band centre
20Hz band centre
25Hz band centre
31Hz band centre
40Hz band centre
50Hz band centre
63Hz band centre
80Hz band centre
100Hz band centre
125Hz band centre
160Hz band centre
Table 4 Display mnemonic used in filter mode
/42. 393 Handbook