ULTRAMATCH PRO SRC2496

+When using the XLR connectors in an unbalanced configuration, pins 1 and 3 on the connectors inserted must be interconnected!

Fig. 5.1: Unbalanced transmission to the ULTRAMATCH PRO

Fig. 5.2: Unbalanced transmission from the

ULTRAMATCH PRO

5.3Digital inputs and outputs

5.3.1Balanced XLR connection

The digital XLR inputs and outputs are not bound by the AES/EBU protocol. They accept and deliver data streams in both the professional and the consumer format. Should the RCA input already be occupied by another device, it is even possible to connect the RCA output of, say, a CD player to the ULTRAMATCH PRO XLR input by using an adapter. To do this, you will need a cable such as the one shown in fig. 5.2, except that instead of a female XLR connector, a plug must be mounted.

The following figure illustrates how to correctly connect the balanced input and output connectors. Basically, it is the same wiring scheme normally used for balanced audio connections such as, for example, the connection between a microphone and a mixing console.

Fig. 5.3: Connecting the ULTRAMATCH PRO in a balanced configuration

Selecting the correct cable is not critical. For distances of less than 20 m, generally available microphone cables have no negative effect. For greater distances or higher requirements (mobile operation, powerful high-frequency fields), however, you should use special 110-Ohm cable with double shielding.

5.3.2 Unbalanced coaxial RCA connection

The RCA inputs and outputs, in turn, are not bound to the S/PDIF format. They accept and deliver data streams in both the professional and the consumer format. It is even possible to connect the XLR output (e.g. from the BEHRINGER ULTRA-CURVE PRO DSP8024 or other equipment) to the RCA input on the ULTRAMATCH PRO by using an adapter. Whether or not the reverse will work, namely connecting the ULTRAMATCH

PRO’s RCA connector to the XLR input of another unit, depends on the sensitivity of the XLR input in question.

The following figure illustrates the correct connection for unbalanced input and output connections via RCA plugs.

Fig. 5.4: Connecting the ULTRAMATCH PRO in an unbalanced configuration

Basically, it is the same wiring scheme as is the norm for unbalanced audio connections in hi-fi systems, e.g. between a CD player and amplifier.

For distances less than 10 m, standard coaxial line cable has no negative influence. However, should greater distances be involved, you should use XLR.

5.3.3 Optical connection

Toslink optical inputs and outputs are also not bound by the S/PDIF format. They accept and deliver data streams in both the professional and the consumer format. Optical connections are by nature not sensitive to electric interference fields, easy to cable and astonishingly robust.

The following figure illustrates how to correctly connect the optical input and output connections.

Fig. 5.5: Connecting the ULTRAMATCH PRO optically via

Toslink

+For many consumer devices the consumer format at the optical input is an absolute necessity, otherwise they do not accept the signal.

+The ULTRAMATCH PRO does not support the ADAT® multi-track format, which can thus neither be looped through nor converted. (ADAT® is a registered trademark of the Alesis Corporation)

5.3.4 Wordclock

Feeding a wordclock signal into the rear BNC connector enables external synchronization of the ULTRAMATCH PRO. Wordclock signals are normally distributed in a network configuration, i.e. are relayed and terminated with 75-Ohm coaxial cable, BNC-T adapters and terminating resistors. Commercially available BNC cables are usually used as connecting cables. In order to offer maximum flexibility, the ULTRAMATCH PRO’s BNC input has a high-impedance design and is not equipped with an internal 75-Ohm terminating resistor. Should the ULTRAMATCH PRO be the last device in the signal chain, however, it is necessary to put a T-connector into the BNC connector. A 75-Ohm terminating resistor (in the form of a short BNC plug) goes on one end of the T-connector and the BNC cable from the “master” delivering the wordclock signal on the other end.

5. INSTALLATION

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