User manual TASCAM LA-80MKII

[. . . ] These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. [. . . ] 12 Example 1 (LA-81MKII) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Example 2 (LA-81MKII) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4­Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4 TASCAM LA-80/81MKII E_LA-80-81mkII_RevC. indd 4 08. 12. 19 1:07:23 PM 1­Introduction Thank you very much for purchasing a TASCAM LA-80/81MKII. Please read this Owner's Manual carefully and understand how to operate the device correctly before use. We hope that you will fully use the features of this unit for many years to come. After reading this manual, please keep it in a convenient place for future reference. Overview The LA-80MKII has 8 internal circuits to convert unbalanced inputs to balanced outputs. In addition, the Audio Distributed Amplifier (ADA) function allows single inputs to be assigned to multiple outputs using the INPUT LINK switches between each channel. The LA-81MKII has 8 internal circuits to convert balanced inputs to unbalanced outputs. for the entire unit · Each channel has an INPUT/OUTPUT LEVEL switch that allows input and output levels to be switched between -20 dBu and +4 dBu · Level indicator LEDs that show signal presence · Semi-fixed TRIM controls for fine level adjustment of ±12 dB · Rack mount brackets · Three-prong AC power outlet (Not on EUR model) · GND LIFT switches to turn the ground ON and OFF for each balanced connector · ALL LIFT switch that turns the ground ON and OFF Supplied accessories The following items are included with this product. · Main unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 · Power cord set. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 · Rack mount screw set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 · Owner's Manual (this document) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 · Warranty card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Contact your TASCAM supplier if any of these items are missing. Precautions for placement and use · Use this unit within its operating temperature range of 5­40º C (40­104º F). In addition, please avoid placement in locations that are very dusty or humid because this could cause malfunction. This could cause damage to the internal circuitry or the case. NOTE Please be aware that, as a result of improvements or other changes to the product, photographs, illustrations and other depictions in the Owner's Manual may differ from the actual product. Cleaning the unit Use a soft cloth to wipe the unit clean. [. . . ] This setting can be made for each channel independently. e INPUT LINK switches 2­8 These switches allow an input signal to be routed to any higher numbered output. Two or more inputs can also be assigned to multiple outputs in sequence (see "3­ADA Functions" for examples. ) 8 TASCAM LA-80/81MKII E_LA-80-81mkII_RevC. indd 8 08. 12. 19 1:07:25 PM 2­Names and Functions of Parts Block diagram (LA-80MKII) UNBALANCED TO BALANCED XLR OUT RCA JACK 2 - 4 3 2 - 4 8 3 AMP with TRIM function 1 LEVEL SHIFT OUTPUT LEVEL -20dBu BALANCED AMP NC3FAH1 J702 1 2 1 AGND RCA JACK 8 INPUT LINK VR1 +4dBu -20dBu 5 6 R729 47k - 7 S705 S702 +4dBu GND LIFT AGND SW 3 GND LIFT SGND AGND AGND AGND Level diagram (LA-80MKII) UNBALANCED TO BALANCED LEVEL +15dB +10dB +5dB 0dB -5dB -10dB -15dB -20dB -25dB -20dBu -10dBV -9dBV (-26. 2dB) -7dBu -9dBu +4dBV (-2. 2dB) +4dBu +17dBV +17dBu 0dBu=0. 775V -30dB -35dB -40dB -45dB -50dB 0dBV=1V -33dBu TASCAM LA-80/81MKII 9 E_LA-80-81mkII_RevC. indd 9 08. 12. 19 1:07:26 PM 2­Names and Functions of Parts Block diagram (LA-81MKII) BALANCED TO UNBALANCED XLR IN BALANCED AMP with TRIM function + - 4 1 NC3FAH1 J102 1 3 BALANCED INPUT CIRCUIT 2 3 2 8 GAIN SWITCH AMP U805B 5 6- + 7 +4dBu RCA JACK VR GND LIFT SW -20dBu AGND LIFT AGND SW GND AGND Level diagram (LA-81MKII) BALANCED TO UNBALANCED LEVEL +15dB +10dB +5dB 0dB -5dB -10dB -15dB -20dB -25dB -30dB -35dB -40dB -45dB -50dB -31. 8dBu -20dBu +21. 9dBu (-7. 1dB) -29dBu -16dBu -18dBu (+24dB) +4dBu +2. 1dBu (-7. 1dB) -5dBu (-2. 8dB) -10dBV 0dBu=0. 775V 0dBV=1V +8dBu -42dBu 10 TASCAM LA-80/81MKII E_LA-80-81mkII_RevC. indd 10 08. 12. 19 1:07:26 PM 3­ADA Functions LA-80MKII ADA Functions By using the LA-80MKII INPUT LINK switches e, the signals input from single connectors can be routed to other channels and output as desired. Example 1 (LA-80MKII) In this example, the signal input through channel 1 is routed to channels 1­8. 1 Input a signal through the (unbalanced) INPUT 1 4. 3 The signal input through channel 1 is output through (balanced) OUTPUTS 1­8 5. Example 2 (LA-80MKII) In this example, a stereo pair of signals input through channels 1 and 5 are output in parallel to 4 channels each. 1 Connect the left stereo signal to the (unbalanced) INPUT 1 4 and connect the right stereo signal to the (unbalanced) INPUT 5 4. Input signal (L) 1 2 Turn INPUT LINK switches 2­4 and 6­8 e ON. [. . . ]