DMTi
42
Note: The standard KDS cable uses only one KDS connector ground pin. KDS
pin 6 is used for the shield drain wire ground on both ends of the cable. The
other ground pins 7-10 are not used with this cable, but must be connected to
ground on both ends. To reduce crosstalk, a cable that uses individually
shielded pairs can be used. Ground pins 6, 7, 8, and 10 are used to connect the
four shields to ground on both ends and pin 9 is connected on both ends with
a larger-gauge wire. This wire is used to reduce ground potential difference
between the transmitter and receiver chassis, reducing common-mode voltage
at the receiver.
The standard KDS interface cables are fabricated with “four-pair” low capaci-
tance cable, Belden 9806 or equivalent, consisting of four unshielded twisted
pairs with a overall braid shield. The connectors are wrapped 360 degrees with
copper foil connected to the cable shield and connector shell at each end. The
cable length must not exceed 15 meters. Kurzweil offers these cables in both 3-
and 15-meter lengths.
KDS Implementation Chart for Kurzweil Products
Product
KDS Output Rate
KDS Output AES Input
KDS Input Rate
KDS Input
AES Output
Bits/Channel
Bits/Channel
K2500
KDFX
48 KHz x 208
26
Yes
N/A
N/A
N/A
Option
K2500
KDS Out
48 KHz x 208
26
Yes
N/A
N/A
N/A
Option
DMTi
28 KHz x 256 –
32
No
28 KHz x 208 –
26 or 32
Yes
54 KHz x 256
54 KHz x 256