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Tandem connection
Make all connections with the mixers turned OFF.
You will need the following cables and cards:
(2) WR-TNDM cards,
(1) Tandem cable (part # DA/DB-DB: Available in the USA),
(1) MINI DIN 8-Pin Serial cable (Macintosh Printer Cable), or (2) MIDI cables,
(1) 75 ohm BNC-BNC wordclock cable (part # DA/BNC: Available in the USA).
Set up the consoles as master and slave and make the tandem connections for the mixers accord-
ingly.
MASTER: When used with the tandem master unit.
SLAVE: When used with the tandem slave unit.
To connect two WR-DA7 mixers in Tandem, install a WR-TNDM card in Slot 3 of each mixer (with
the mixers powered OFF).
Select MASTER/SLAVE on the front panel of each WR-TNDM card.
For proper wordclock synchronization between the two mixers, connect the WORD CLOCK OUT
terminal of the master unit to the WORD CLOCK IN terminal of the slave unit (75 ohm terminate
ON). To set the wordclock of the slave unit, press the D-I/O switch until the INPUT SETUP screen
appears. Then, set the SOURCE SELECT to WCK IN.
To establish communications between the Tandem mixers connect the specified serial cable
(Macintosh cross cable printer cable) or MIDI cable between the RS-422/485 and MIDI ports on
each of the mixers (TO PC or MIDI IN/OUT) must be selected to establish communications.
Communication setting are selected by pressing the D-I/O switch to display the TO SLOT screen of
D-I/O page then select the port from either TO PC or MIDI. In the case of TO PC connection, the
setting should be set so that the baud rates of the master and slave units are set the same on each
of the mixers (a baud rate of 125k is recommended). For baud rate setting, press the MIDI switch
to display the MIDI SETUP screen then select the necessary baud rate.
To establish tandem connections, press the D-I/O to display the TO SLOT screen of D-I/O and
switch the TANDEM setting to ON in Slot 3.
Press the MIDI button in the Set Up section on the Top Panel of the DA7 to select the MIDI SET UP
screen. In the PORT SELECT Area of the SERIAL I/O SETUP section, select TO PC. Set the BAUD
RATE for both consoles to 125K by highlighting the area with cursor and using dial to select the
rate. In the MIDI SETUP area, make sure the MIDI channels are set to the SAME channels for
Gen.Rx/Gen.Tx for BOTH consoles. Set Gen.Rx/Gen.Tx PORT to TO PC.
Press the D-I/O to display the TO SLOT Window. If TANDEM is not selected in the
NORMAL/INSert/TANDEM area, select it. Below the “SLOT 3 TANDEM” area, make sure TANDEM
is set to ON. Select AUTO in the OFFSET DELAY section. Make sure the PORT SELECT is set to TO
PC. The CONNECT area will read SLOT NG or DATA NG until the SLAVE console is configured.
On the Slave console, follow the same procedures. The CONNECT area in the TO SLOT window
will read SLOT NG or DATA NG until data is sent between the consoles. Turning a channel to ON
will initiate the data flow, and the CONNECT prompt in the D-I/O TO SLOT screen will then read
OK on both DA7s (this can take up 5 seconds).