grace design m906
owner’s manual
13
be used with these inputs (pin 1 shield, pin 2 positive, pin 3 negative).
WoRD cLock/SUPeR cLock tHRU
- This BNC connector allows you to pass the clock received
at the Word Clock/Superclock input to other digital devices downstream of the m906. The output is
buffered and is designed to drive a 75 Ohm line.
WoRD cLock/SUPeR cLock in
- The m906 can accept an external Word Clock or Super Clock signal
from an external clock generating unit. This might be a stand-alone clock source or via, for example,
the Word Clock output from your digital audio workstation. It should be noted that referencing the
m906 from an external Word Clock is not necessary for the unit to function properly as the m906 will
also function quite nicely by stripping embedded clock data from a connected digital audio source.
However, you may have your entire digital audio system referenced from a single master clock that you
feel particularly good about, hence the ability for the m906 to receive and lock itself to this clock. A high
quality 75 Ohm cable should be used for word clock or Superclock connections.
WoRD cLock LoaD SWitcH
- The switch labeled 1M Ohm/75 Ohm is used to terminate the Word
Clock input. If the Word Clock signal in your studio is being daisy-chained from unit to unit, (including
the m906) you’ll want to set the switch to 1M Ohm, which is essentially an unloaded setting. If the m906
is the only device being clock referenced (or the last unit in a daisy-chain of other high impedance units),
you’ll want to select the 75 Ohm load position. NOTE: Selecting the 75 Ohm load position when there is
already another device on the line that has a 75 Ohm load will create a total load of 37 Ohms, which will
attenuate the signal to a point where the m906 will not lock.
aDat inPUt
- This input accepts standard ADAT multi-channel optical cables (lightpipe). ADAT channel
pair assignment is 1-2 Left-Right / 3-4 Left Surround-Right Surround / 5-6 Center-Sub / 7-8 left-right.
aeS3 inPUt
- This input conforms to the AES3 standard. Use of high quality 110 Ohm balanced cable
is highly recommended.
S/PDif inPUt
- This is a standard coaxial stereo digital input. The input impedance is 75 Ohms. Use a
quality 75 Ohm cable for connections to this input.
toSLink inPUt
- This is a standard stereo optical input connector for use with consumer devices.
Standard TOSLINK optical cable can be used to connect to this input.
aeS3 x 4 inPUt
- This 8 channel input conforms to the AES3 standard. Channels 1-6 are used for
surround monitoring while channels 7-8 can be monitored as a stereo signal. Use of high quality 110
Ohm balanced cable is highly recommended. Note: The m906 AES Loop-Thru option provides the
user with four AES digital outputs via this multi-channel AES DB-25 connector. Each of the outputs is
completely isolated and is designed to drive a 110-ohm termination. These are wired according to the
TASCAM pinout as shown in the cable and connector diagram (pp. 36).
tB mic inPUt
- This is a standard microphone input. It can be used with dynamic or condenser
