编号69：惠普HP239AOperating-Service使用与维修手册

HEWLETTPACKARDOPERATING AND SERVICE MANUALMODEL 239AOSCILLATORSerial Numbers:1814A00101 and GreaterIMPORTANT NOTICEThis manual applies directly to instruments withthe serial numbers shown on this page.If changeshave been made in the instrument since this manualwas printed,at“Manual Changes”supplementsupplied with this manual will define thesechanges.Backdating information contained in Sec-tion VII adapts this manual to instruments havingserial numbers lower than those shown on thispage.WARNINGTo help minimize the possibility of electrical fire orshock hazards,do not expose this instrument torain or excessive moisture.Manual Part No.00239-90000Microfiche Part No.00239-90050@Copyright Hewlett-Packard Company 1978P.O.Box 301,Loveland,Colorado 80537 U.S.A.Printed:April 1978