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4Adjustments

Introduction This section provides adjustment procedures for the HP 1650B/51B. The

assemblies with adjustments are: the power supply, CRT monitor, and the system

board. Figures in this section are the testpoint and adjustment locations for the

HP 1650B/51B.

Calibration

Interval

The recommended calibration interval for the HP 1650B/51B is two years. The

adjustments are set at the factory on assemblies when they are tested. However,

adjustments may be necessary after repairs have been made to the instrument.

Usually the only assembly that may require adjustments is the assembly that has

been replaced.

Note An instrument warm-up of 15 minutes is recommended, but not required, before

adjustment procedures are performed.

Warning Read the Safety Summary at the beginning of this manual before

performing any adjustment procedures.

Caution The adjustment procedures are performed with the top cover of the instrument

removed. Take care to avoid shorting or damaging internal parts of the instrument.

Safety

Requirements

Specific warnings, cautions, and instructions are placed wherever applicable

throughout the manual. These must be observed during all phases of operation,

service, and repair of the module. Failure to comply with them violates safety

standards of design, manufacture, and intended use of this module.

Hewlett-Packard assumes no liability for the failure of the customer to comply with

these safety requirements.

HP 1650B/1651B Adjustments

Service Manual 4-1

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Agilent Technologies 54502A Manuale di Servizio Pagina 71