Lexicon 960L Installation,

1-6

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

3 Low

2 High