User manual PEAVEY IA 400

[. . . ] There are two electrical connections per channel; the right connection is the ground interface and the left connection is the TTL level output. see the Wiring Connections section for Control Output circuit examples. CONTROL CIRCUIT INPUTS (7) The inputs provide the means of controlling a device within a MediaMatrix view. AUDIO OUTPUTS (9) Each of these eight channels is a balanced analog audio output from the MediaMatrix system. [. . . ] Signal-to-Noise Ratio: MM-8830: Greater than 96 dB MM-8840: Greater than 98 dB IA 400: Greater than 100 dB Crosstalk: MM-8830: Greater than 95 dB MM-8840: Greater than 95 dB IA 400: Greater than 97 dB Total Harmonic Distortion: MM-8830: Less than 0. 5 dB, 20 Hz to 20 kHz Signal-to-Noise Ratio: MM-8830: Greater than 92 dB MM-8840: Greater than 95 dB IA 400: Greater than 96 dB Crosstalk: MM-8830: Greater than 91 dB MM-8840: Greater than 94 dB IA 400: Greater than 95 dB Total Harmonic Distortion: MM-8830: Less than 0. Due to our efforts for constant improvements, features and specifications listed herein are subject to change without notice. Variable DC supply can be used to control device - NO MORE THAN 10V!The eight control outputs appear on a separate Phoenix connector on the back of the Break-Out-Box. They provide logic outputs from the system. Outputs are capable of sourcing 6ma and sinking 20ma while maintaining valid TTL levels. There are two electrical connections for each channel output control. When viewing the unit from the back, the left connection is the positive terminal. These outputs can be used to control devices as follows: An Opto-Isolator: V A Relay: V Using the Breakout Box with an Unbalanced Audio Device Note: Be sure to ground the unused negative terminal on the BoB input/output. For more information on grounding, write for our free booklet "Shock Hazard and Grounding. Power supply cords should always be handled carefully. Never walk or place equipment on power supply cords. Periodically check cords for cuts or signs of stress, especially at the plug and the point where the cord exits the unit. The power supply cord should be unplugged when the unit is to be unused for long periods of time. If this product is to be mounted in an equipment rack, rear support should be provided. Metal parts can be cleaned with a damp rag. The vinyl covering used on some units can be cleaned with a damp rag or an ammoniabased household cleaner if necessary. Disconnect unit from power supply before cleaning. Care should be taken so that objects do not fall and liquids are not spilled into the unit through the ventilation holes or any other openings. [. . . ] This unit should be checked by a qualified service technician if: a. Anything has fallen or been spilled into the unit. The unit has been dropped or the enclosure damaged. The user should not attempt to service this equipment. [. . . ]