IF-TAD Interface
TASCAM IF-TAD –
15
2.3
Notes on word length
Some models of ADAT recorder record and play back digital data
at 20-bit resolution.
• On the TASCAM DA-38 and DA-98 recorders, if a 16-bit
input word length is selected, 20-bit data will be truncated to
the 16 bits recorded on the DTRS recorder. If 20-bit or 24-bit
is selected as the input word length, the 20-bit data will be
rounded to 16 bits, using the dither facilities built into the
DTRS recorder.
• On DA-88 DTRS recorders, the data is truncated (rather than
rounded) to 16-bit resolution.
• On the TM-D8000, use the OPTION page of the DIGITAL
I/O screen to set the word length.
You should be aware of differences in word length in the system,
and make the appropriate adjustment on the different units in the
system, referring to the unit’s documentation if necessary.
2.4
Note on metering
There are differences in the way that digital audio devices from
different manufacturers display levels on bargraph meters. In the
case of TASCAM equipment, levels over the digital full-scale level
are displayed as OVER. On other equipment, levels within 1 dB or
2 dB of full-scale may be indicated as MAX on the topmost seg-
ment of the display.
Accordingly, when transferring data between devices, you may
notice that some louder portions of the material will cause red seg-
ments of the meter on one unit to light, bun not on the other unit.
This is usually not a problem, and simply reflects the way in which
different manufacturers choose to inform you of digital signal
levels.
