CONTENTSPREFACE .................................................................................................................................................................................. 1FEATURES ................................................................................................................................................................................ 1PRECAUTIONS ......................................................................................................................................................................... 1MAJOR OPERATING CONTROLS AND THEIR FUNCTIONS ................................................................................................... 2RACK MOUNTING .................................................................................................................................................................... 4SETTING UP THE MENUS ........................................................................................................................................................ 5SYSTEM CONNECTIONS ....................................................................................................................................................... 11SPECIFICATIONS ................................................................................................................................................................... 15STANDARD ACCESSORIES ................................................................................................................................................... 15Warning:This equipment generates and uses radio frequency ener-gy and if not installed and used properly, i.e., in strictaccordance with the instruction manual, may cause harmfulinterference to radio communications. It has been testedand found to comply with the limits for a Class A computingdevice pursuant to Subpart J of Part 15 of FCC Rules,which are designed to provide reasonable protectionagainst such interference when operated in a commercialenvironment.WARNING:TO PREVENT FIRE OR ELECTRIC SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOIS TURE.The lightning flash with arrowhead sym-bol, within an equilateral triangle, isintended to alert the user to the pres-ence of uninsulated "dangerous voltage"within the product's enclosure that maybe of sufficient magnitude to constitute arisk of electric shock to persons.The exclamation point within an equilat-eral triangle is intended to alert the userto the presence of important operatingand maintenance (servicing) instructionsin the literature accompanying the appli-ance.The serial number of this product may be found on the bot-tom of the unit.You should note the serial number of this unit in the spaceprovided and retain this book as a permanent record of yourpurchase to aid identification in the event of theft.Model No. WJ-MS424Serial No.CAUTION:TO REDUCE THE RISK OF ELECTRIC SHOCK, DONOT REMOVE COVER (OR BACK). NO USER SER-VICEABLE PARTS INSIDE.REFER SERVICING TO QUALIFIED SERVICE PER-SONNEL.CAUTIONRISK OF ELECTRIC SHOCKDO NOT OPENSA 1965SA 1966For U.S.ACAUTION:Before attempting to connect or operate this product,please read the label on the bottom.