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960L Owner’s Maunal The Mainframe
Digital Audio Connections
The AES interface requires balanced connections,
using high-quality, low-loss, controlled-impedance,
shielded, twisted-pair cables designed for data
communications, such as Belden 9860 (braided shield)
or Belden 9271 (foil shield). The use of ordinary
microphone cable can cause digital interfaces to
work unreliably. Remember that the maximum
recommended length for AES cabling is 100 feet (30
meters).
Following AES conventions, the odd-numbered
channels are on the left channel of each AES stereo
pair, the even-numbered channels on the right. The
word length is 24 bits, at sample rates of 44.1, 48, 88.2,
or 96 kHz. To use the digital inputs, the 960L can be
synchronized to AES input 1-2 or to the TTL Wordclock
input. Note that all digital inputs must be synchronized
to the same master clock for operation without artifacts.
For routing and panning, see Chapter 4, Operations in
Detail. All signals sent to the digital outputs are also
sent to the analog outputs.
MIDI Connections
Use standard, 5-pin DIN MIDI cable assemblies,
available from your local dealer. Chapter 6, MIDI
describes the 960L MIDI functionality.
Wordclock Connections
Use standard, 75 ohm BNC cables, available from your
local dealer. The self-terminating loop-thru TTL input
facilitates daisy-chained clock distribution. The 960L
will refer its internal wordclock to the falling edge of the
input square wave. The 960L output is a TTL-
compatible square wave with the falling edge aligned
with the start of the 960L sample period.
Installation, continued
2 High
3 Low
1 Ground
1 Ground
3 Low
2 High