Specifications

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14
ADMS 44.22 Installation and Operation Manual
INSTALLATION
110Ω AES digital cables to connect the ADMS 44.22 to and from your external AES
devices. Regular analog microphone cables should never be used. Microphone cable
has substantially lower bandwidth than 110Ω AES digital cable and therefore even
when used over short distances will severely degrade the quality of the AES signal.
2.6 Word Clock In/Out
The ADMS 44.22 Word Clock In and Word Clock Out jacks are 75Ω BNC connec-
tors located on the rear panel. The Word Clock input is internally terminated with a
75Ωresistor, and therefore requires no external termination. The Word Clock Output
is capable of driving any CMOS/TTL compatible word clock input. For optimum
clock performance the word clock input of the external device should also be termi-
nated with a 75Ω resistor. Use only 75Ω coaxial cables such as RG-59 or RG-6 that
are terminated with 75Ω BNC connectors.
Note: While 50
Ω
coaxial cable such as RG-58 will work with the ADMS 44.22,
signal reflections caused by impedance mismatches between the cable and the
input terminating resistor will increase the clock jitter and degrade the perform-
ance of the A/D and D/A converters. The amount of degradation increases with
cable length.
2.7 Interconnect Port
The ADMS 44.22 Interconnect port is an RJ45 Ethernet jack located on the
rear panel, as shown in the picture above. To link two ADMS 44.22 units together
to form a 16x2 matrix switcher, connect the Interconnect ports of the Master and
Slave units together using a CAT-5E Ethernet cable wired in accordance with the
EIA/TIA 568A or EIA/TIA 568B standard. Use the shortest distance possible, up to
a distance of 10’. Substitute cable such as twisted pair telco is not acceptable.
Caution: Do not connect the ADMS 44.2 Interconnect port to Ethernet net-
work equipment. Although the connectors and cabling are identical to those used
for 10/100Base-T Ethernet connections, the Interconnect port signals are propri-
etary and are not compatible with the Ethernet electrical specification. Connecting
the ADMS 44.22 to Ethernet hardware such as a router, switch, or computer may
result in damage to the ADMS 44.22, your network hardware, or both.
Word Clock, Interconnect, & RS-232 Connectors