BK Precison 2640_manual 电路图.pdf

1 RadioFans.CN 收音机爱 好者资料库 2 RadioFans.CN 收音机爱 好者资料库 3 Safety Term and SymbolsSafety Term and Symbols . Danger statements identify condition or practices that could result in injury or loss of life. Caution statements identify conditions or practices that could result in damage or fire. Ground statements identify conditions or practices that could connect protective conductor. RadioFans.CN 收音机爱 好者资料库 4 Caution for safetyCaution for safety Prohibiting to removal the cover Do not remove the instrument cover to access the internal components. Only B LCD Contrast 78 No. 9 Attenuator 79 No. 0 system .79 Shift.80 Dot Buzzer .80 Menu Load .81 Enter Save .81 Up/Down Keys and Knob Key82 11 Overview The B LCD Contrast Push the No. 8key to input the value of 8. Toinputthe valueofnumeral8intheStart/Stop/Scan/Center frequencies, the No. 8Key is used. LCD Contrast Function after pushing the ShiftKey By pushing the Shiftkey and then pushing the No. 8Key, LCD Contrast function can be selected. Please refer to the LCD Contrastsection for details on basic operation. 79 No. 9 Attenuator Push the No. 9key to input the value of 9. Toinput thevalueofnumeral9intheStart/Stop/Scan/Center frequencies, the No. 9Key is used Attenuator Setup Function after pushing the ShiftKey By pushing the Shiftkey and then pushing the No. 9Key, Attenuator function can be selected. Please refer to the Attenuator Setup section for details about basic operation. No. 0 System Push the No. 0key to input the value of 0. When inputting the value of numeral 0 in the Start/Stop/Scan/Center frequencies, the No. 0Key is used. System Setup Function after pushing the ShiftKey By pushing the Shiftkey and then pushing the No. 0Key, System Setup function can be selected. Please refer to the System Setup section for details about basic operation. 80 Shift Using the Function Key The ShiftKey dose not performs any function by itself. The Shift Key can be used with functions printed below the numeral keys. If the shift key is pressed twice, CENT/SPAN located on bottom of display is changed to START/STOP. Dot Buzzer The Dotkey should be used to input a decimal point When input the value of Decimal Point in the Start/Stop/Scan/Center frequencies, this key is used. Buzzer Setup Function after pushing the ShiftKey By pushing the Shiftkey and then pushing the DotKey, Buzzer On or OFF can be selected. Please refer to the Buzzer section for details on basic operation. Return Function on Menu and System Return Function is used to return from lower Menu to higher Menu on Menu and System. 81 Menu Load Menu Function Various functions can be selected after entering Menu item. At the Menu item, pushing the MenuKey once more; will activate the System item. Refer the section of Menu and System of basic operation if need more detail Load Function after pushing the ShiftKey. By pushing the Shiftkey and then pushing the MenuKey, stored Data can be loaded. Please refer to the Store Mode section for details of basic operation. Enter Save Enter Function The Enter Key is used to select Menu or System items. Save/Load Function after pushing ShiftKey By pushing the Shiftkey and then pushing the MenuKey, Data can be saved. Pleasereferto theSave/Load sectionfordetailsaboutbasic operation. 82 Up/Down Keys and Knob Key Up/DownKeys and KnobKey Functions Movement of Marker, Menu items and System After setting the Span, the Span can be changed using the Up/Down key. After setting the Reference level, the Reference level can be changed using Up/Down key. 83 Service Information Warranty Service: Please return the product in the original packaging with proof of purchase to the address below. Clearly state in writing the performanceproblemandreturnanyleads,probes,connectorsand accessories that you are using with the device. Non-Warranty Service: Return the product in the original packaging to the address below. Clearly state in writing the performance problem and return any leads, probes, connectors and accessories that you are using with the device. Customers not on open account must include payment in the form of a money order or credit card. For the most current repair charges please visit and click on “service/repair”. Return all merchandise to B&K Precision with pre-paid shipping. The flat-rate repair charge for Non-Warranty Service does not include return shipping. Return shipping to locations in North American is included for Warranty Service only. For overnight shipments and non-North American shipping fees please contact B&K Precision. B&K Precision 22820 Savi Ranch Parkway Yorba Linda, CA 92887 714-921-9095 Include with the returned instrument your complete return shipping address, contact name, phone number and description of problem. 84 Printed in Korea Copyrights B&K Precision Corp. 2008 B&K Precision Corporation 22820 Savi Ranch Parkway Yorba Linda, CA 92887