User manual MACKIE DXB 200 CONNECTIONS

[. . . ] dXb. 200 Appendix B: Connections XLR Connectors Mic/Line 4 cards use 3-pin female XLR connectors on the MIC inputs. They are wired as follows, according to standards specified by the AES (Audio Engineering Society). SHIELD HOT TIP COLD SHIELD 1/4" TS Phone Plugs and Jacks "TS" stands for Tip-Sleeve, the two connection points available on a mono 1/4" phone jack or plug. [. . . ] When connecting an unbalanced output to a balanced input, be sure that the signal high (hot) connections are wired to each other. The unbalanced ground (earth) connection should be 1/4" TRS Balanced Mono Wiring: Sleeve = Shield Tip = Hot (+) Ring = Cold (­) Stereo Headphones RING SLEEVE SLEEVE RING TIP TIP RING TIP SLEEVE 1/4" TRS Stereo Unbalanced Wiring: Sleeve = Shield Tip = Left Ring = Right · 46 dXb. 200 wired to the low (cold) and the ground (earth) connections of the balanced input. If there are ground-loop problems, try disconnecting the unbalanced ground (earth) connection from the balanced input ground (earth) connection, leaving the unbalanced ground connected to the balanced input low (cold) connection only. In some cases, you may have to make up special adapters to interconnect your equipment. For example, you may need a balanced XLR female connected to an unbalanced 1/4" TS phone plug. Many common adapters can be found at your local electronics supply store. The balanced-to-unbalanced connection has been anticipated in the wiring of Mackie jacks. A 1/4" TS plug inserted into a 1/4" TRS balanced input, for example, will automatically unbalance the input and make all the right connections. Conversely, a 1/4" TRS plug inserted into a 1/4" unbalanced input will automatically tie the ring (low or cold) to ground (earth). Several companies make DB25-to-DB25 cables specifically for audio, with proper shielding to reduce crosstalk and noise. DB25 cables that break out to XLR, 1/4" TRS, or TT connectors for connecting to other mixers or audio gear are also readily available. See your Mackie dealer for details. Owner's Manual Digital AES/EBU The AES card has a DB25 connector that provides digital I/O for eight channels in the AES/EBU format. This connector is wired as follows: 13 12 11 10 9 8 76 5 4 3 2 DB25 Connectors Not all DB25 connectors are alike. [. . . ] If not, you will need to make a conversion cable so the signals arrive at the correct pins on the receiving end of the cable. TDIF The DIGI card has a DB25 connector that provides digital I/O for eight channels in the TDIF format. This connector is wired as follows: 13 12 11 10 9 8 76 5 4 3 2 25 24 23 22 21 20 19 18 17 16 15 14 Digital DB25 TDIF Input/Output 13 12 11 10 9 8 76 5 4 3 2 1 25 24 23 22 21 20 19 18 17 16 15 14 Analog DB25 Output 1 1 Owner's Manual 47 [. . . ]