Lyngdorf Audio TDA 2200 Optional AD Converter Board, Cleaning and Maintenance, a. Balanced inputs

15. Optional AD Converter Board

The Optional AD Converter card for the TDA 2200 has input connectors for both balanced (XLR) and unbalanced (RCA) signals. The input impedance of the inputs are 10 kOhm.

a. Balanced inputs

The balanced XLR inputs are wired in accordance with IEC268:

Pin 1: Chassis and ground.

Pin 2: Hot (+).

Pin 3: Cold (-).

Shell: Chassis and ground.

b. Unbalanced inputs

The unbalanced RCA inputs are wired in accordance with normal practice:

Shell: Chassis and ground.

Pin: Hot (+).

c. Trigger connector

The TDA 2200 is equipped with a TRIGGER OUT 3.5mm mono jack connector. The Trigger signal is a 12V short circuit-protected output signal for powering up external equipment when the TDA 2200 is on, e.g. remotely connected SDA 2175 power amplifiers or active subwoofers.

16. Cleaning and Maintenance

Always unplug the unit from the electrical outlet before cleaning.

This unit does not require any regular maintenance except to keep its exterior clean. Simply wipe its exterior with a clean soft cloth. A small amount of non-abrasive cleaner may be used on the cloth to remove any excessive dirt or fingerprints. Do not use abrasive cleaners or cleaners containing liquid solvents.

38