AKG AS8 Operating Instructions Manual
8 channel automatic matrix mixer
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Also See for AS8:
- Manual (42 pages) ,
- Quick start manual (21 pages) ,
- Operating instructions manual (18 pages)
Table of Contents
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Summary of Contents for AKG AS8
- Page 1 AS8/AS8TC 8 Channel Automatic Matrix Mixer OPERATING INSTRUCTIONS and trouble-shooting guide...
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Page 2: Table Of Contents
In addition, a sophisticated compressor/ leveller is included for dynamic range control of the audio program material. The AS8 has an RS-232 port for remote setup or control by a computer or other RS- 232 compatible controller. -
Page 3: General Technical Description
In addition, a Mix Minus signal is available which allows easy interfacing to teleconferencing hybrids. An RS-232 port is available to allow many of the functions of the AS8 to be controlled either by a computer or a dedicated control system (such as the AMX or Crestron systems). -
Page 4: Installation
Installing the AS8 properly is simple, and only requires attention to a few issues. The AS8 should be used in a grounded metal rack. If only one AS8 is being used, it should be placed in the Master mode, using the rear panel switch. Erratic performance will result if the unit is in the Slave mode, but no damage will be done to the unit. -
Page 5: Front Panel Description
HF - (TC version only) Adjusts the high frequency response of the channel. MAIN SECTION MAIN LEVEL - Controls the overall output level of the AS8. If multiple AS8s are used together, only the Main Level control of the last (i.e. Master) AS8 will be operational. -
Page 6: Rear Panel Description
.167V/dB (or 6dB/V) from 0V to 5V. At 5V, the channel is turned completely off. The control voltage should not exceed 5V. Below is a listing of the 15 pins on the Remote Level control port and their functions. AS8 REAR PANEL... -
Page 7: Fcc Part 15 Notice
Reset to Local Mode (see Operating Instructions) RS-232 SERIAL PORT - Provides access to and control of some of the operational features of the AS8. The port is compatible with the serial port of a PC, or other controllers with RS-232 type serial ports. For hardware interconnection and software details, see Appendix 1, “Serial Port Hardware and Software”. -
Page 8: Operating Instructions
(if used). Using the Remote Level Control capability of the AS8 is addressed in the next section. When the power is turned on to the AS8, it will display its LecNet address on the Channel On LEDs for 1.5 seconds before entering normal operation. -
Page 9: Remote Level Connections
EMOTE EVEL ONNECTIONS The figure below shows several options which may be used for remote level control of the AS8. Pots, switches, and external control voltages may all be used as the application dictates. WIRING DIAGRAMS, REMOTE LEVEL CONTROL PORT... -
Page 10: Service And Repair
NITS FOR EPAIR Please contact your local AKG distributor for instructions on how to send your unit in for service. You will save yourself time and trouble if you will follow the steps below: A. Pack the equipment carefully and ship to us, shipping costs prepaid. If necessary, we can provide you with the proper packing materials. -
Page 11: Specifications
PECIFICATIONS Mic/Line Input Type: Electronically balanced and RF filtered Impedance: Greater than 2.5K, any gain setting Input Gain Settings: 0dB, +30dB, +50dB EIN, 20-20KHz: –126dBu (+50dB gain) Maximum Input Level: +20dBu at 0dB gain –10dBu at +30dB gain -30dBu at +50dB gain Tone Controls: Shelving controls Turnover frequency 1kHz... -
Page 12: Serial Cable Wiring Diagram
IRING IAGRAMS The serial port on the AS8 is a minimal RS-232 implementation. The figure shows the wiring diagram to accommodate interconnection with either a 9 or a 25 pin serial port on a PC or other serial device. AMX P... -
Page 13: Serial Port Commands Available
3) Host sends command 1 hex (1 byte) to the AS8 to get the name data; 4) The LecNet device sends to the host 4 bytes. The first byte is 3 hex, which is the number of bytes in the AS8’s name string. - Page 14 OMMANDS Set Auto/Direct Read Flag - Allows the host to change the value of the Direct/Auto Read Flag. If the flag is 0, the AS8 reads the internal Direct/Auto switches to determine the channel status. If the flag is set to 1, the value stored in EEPROM is used.
- Page 15 Host sends command - 1 Host receives data bytes: Byte 1 is the length of the name string (3 for the AS8), bytes 2, 3, and 4 are the ASCII values for “AS8” (66,77,56).
- Page 16 OMMANDS Set Remote Level Read Flag - Allows the host to set the value of the Remote Level Read Flag. If the flag is 0, the AS8 reads the 15 pin remote level port to determine the remote channel attenuation value. If the flag is set to 1, remote channel and main attenuation values used are those input from the serial port.
- Page 17 Flag. If the flag is 0, the AS8 reads the internal compressor/leveller In/Out switch to determine whether the system should be active. If the flag is 1, the AS8 will use the value stored in EEPROM. The new value is stored in EEPROM.
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Page 18: Warranty
However, the limitation of any right or remedy shall not be eff e c t i v e w h e re such is prohibited or restricted by law. Simply take or ship your AKG product prepaid to our Valid only in the United States.