HOW TO USE THIS MANUAL
The HP 4278A Operation Manual provides the information required to operate and test the
4278A. To adjust and repair the 4278A, the Maintenance Manual (PN 04278-90100) is re-
quired and must be ordered separately.
This Operation Manual contains six sections plus several appendixes, organized for the
convenience of the first time user. After you receive your HP 4278A, begin with Section 1.
If you are a first time user of an already installed 4278A, begin with Section 2.
Section 1, Receiving and Getting Ready To Use Your HP 4278A :
Section 1 includes unpacking, initial inspection, and preparation information necessary
before you apply AC power. Do NOT connect the power cable before reading this
section.
Section 2, Familiarizing Yourself with the HP 4278A :
Section 2 includes examples of basic operation. Use this section to obtain "hands-on"
experience by following the examples given.
Section 3, Functions and Features :
Section 3 provides detailed 4278A function explanations, Read Section 2 before pro-
ceeding with this section.
Section 4, Interface Options :
Section 4 includes 4278A interface operation and interconnection information neces-
sary for designing a test system.
Section 5, General Information :
Section 5 provides 4278A features, capabilities, specifications, accessories, options,
option installation, and repacking information.
Section 6, Performance Tests :
Section 6 provides information for checking whether your 4278A is within the specifica-
tions given in Section 5. This section is also for initial 4278A inspection, periodic per-
formance testing, and performance testing after repairs.
Appendix A, Backdating Changes :
Appendix A includes information for modifying this manual to instruments manufac-
tured before the print date of this manual.
Appendix B, Sot tkey Tree
Appendix B provides a listing of the 4278A's softkeys.
Appendix C, Display Messages :
Appendix C lists the 4278A's Comments and Error Messages.
Appendix D, Possible Problems and Their Solutions :
Appendix D lists several general problems that you may encounter, and tells you what
to do if they occur.
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