Roland V-Mixer VM-3100 - Digital Connection Precautions and Limitations; VM-3100 Pro with DIF-AT and ADAT;TASCAM Precautions; VM-3100 Pro with DIF-AT and Newer ADAT Models

m@ Settings Procedure
In the case of digital connection to a VM-3100Pro, you
need to set up RMDB II.
For details, reder to “RMDB II Settings” (p.58) in “Points
for Better Mixing.”
@ Precautions to observe in
cigitar connecting the :
VM-3100Pro that is set up with a
DIF-AT to ALESIS or TASCAM
digital recorders
The VM-3100Pro operates at a fixed sampling rate of 44.1
kHz. Accordingly, when digitally connecting an ADAT,
DA-98/88/38, or similar device to the VM-3100Pro‘s
RMDB II connector through DIF-AT, there are a number
of precautions and limitations of which you should be
aware.
Using the VM-3100Pro with DIF-AT and
an earlier ADAT (Black Face)
The sampling rate for the older ADAT models is 48.0
kHz. However, when an ADAT is synchronized (as a
slave) with external digital device, it can be used for
recording and playback at 44.1 kHz. In other words,
when connecting an earlier model ADAT to the VM-
3100Pro, set the ADAT to be synchronized as the slave.
Procedure for setting the sample clock source to
DIGITAL IN on the ADAT
1. Press “SET LOCATE” and “DIGITAL IN”
simultaneously.
2. Pressing these toggles between INT (INTERNAL)
and DIG (ADAT OPTICAL) (set this to DIG).
3. Then press “DIGITAL IN” to enable ADAT
OPTICAL.
Limitations:
- ADAT tapes that have already been recorded at a
sampling rate of 48.0 kHz, whether on an earlier
model ADAT or otherwise, are played back at 44.1
kHz when played back on an ADAT connected via
DIF-AT to the VM-3100Pro. Thus, such tapes end up
being played at a lowered pitch. In such instances,
rather than using the DIF-AT, connect the ADAT to
the VM-3100Pro via the analog IN/OUT.
- When tapes recorded at 44.1 kHz on an ADAT which
has been connected to the VM-3100Pro are then played
back on an earlier model ADAT that is not connected
to a VM-3100Pro, since it is played back at 48.0 kHz,
the tape plays back at a higher pitch.
In such instances, use BRC or other means to play the
tape back with the Master Clock set to 44.1 kHz.
- When connected to the VM-3100Pro, the tape counter
on earlier ADAT machines is calculated using the
sampling rate information that is on the tape, so the
timing indicated actually corresponds to a rate of 48.0
kHz. Therefore, this results in a discrepancy with the
SMPTE time code indicated in the LCD screen of the
ADAT. However, the correct time code appears in the
VM-3100's display.
Using the VM-3100Pro with DIF-AT and
an ADAT XT/LX20/XT20/M20
Using the VM-3100Pro with DIF-AT and
a TASCAM DA-98/88/38
The recorder models above feature selectable sampling
rates which can be switched to either 44.1 kHz or 48.0
kHz. Be sure to format tapes at 44.1 kHz when
connecting one of these models to the VM-3100Pro.
Limitations:
* When tapes that have already been recorded on one of these
devices at a sampling rate of 48.0 kHz are played back at
44.1 kHz by with a device connected to the VM-3100Pro,
these tapes end up being played at a lowered pitch. In such
instances, rather than using the DIF-AT, connect the
recorder to the VM-3100Pro vin analog IN/OUT.
(1) VM-3100 Pro
+ DIF-AT
+ Earlier ADAT
(2) Earlier ADAT (Alone)
(3) VM-3100 Pro
+ DIF-AT
+ A-DAT(44.1kHz)
(AOR Ae [| [we we = [=
(5) VM-3100 Pro
+ DIF-AT Yes | Yes
+ DA-98/88/38(44.1kHz)
(6) DA-98/88/38 Alone