Section I. General Information; Section Iii. Operation - HP 8662A Operating And Service Manual

Synthesized signal generator

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8662A Option HI 1

08662-92019

Page 1 of 20

SECTION I. GENERAL INFORMATION

Option HI 1 for the 8662A Synthesized Signal Generator provides front panel and HP-IB

selection of either the internal 10 MHz Reference Oscillator or an external 10 MHz Reference

Source. Internal battery-powered memory will retain the last mode selected even if line power is

removed. This option also deletes the provision for an external 5 MHz Reference and changes the

Auxiliary FM feature so that it cannot be controlled by special functions.

On page 1-9, in Table 1-2, Supplemental Characteristics (1 of 2), under FREQUENCY,

incorporate the following:

EXTERNAL: Option HI 1 deletes the external 5 MHz input capability on the rear panel

connector, but retains 10 MHz operation.

On page 1-10, in Table 1-2, Supplemental Characteristics (2 of 2), under EXTERNAL

MODULATION, add the following:

AUXILIARY FM INPUT: Option HI 1 has been produced so that this function is

hardwired in the "Off position. An internal jumper wire must be moved in order to turn this input

"On".

SECTION III. OPERATION

On page 3-5, replace Section 3-9, Reference Selection, with the following:

The 8662A Option HI 1 deletes the three reference signal switches normally located on

the rear panel. The INPUT connector can accept a 10 MHz reference signal to be used instead of

the generator's internal reference.

The internal reference is a 10 MHz signal with an aging rate of <5 x 10"'°/day after

warm-up (typically after 24 hours). Selecting Special Function 00, Special Function 50, or the

HP-IB Clear Message will configure the instrument to use this internal reference.

To use an external 10 MHz source, select Special Function 51. This will disable the

internal reference and enable the INPUT connector for a 10 MHz signal at >+7 dBm.

The OUTPUT connector provides a 10 MHz signal (>+7 dBm) derived from the selected

reference. The OUTPUT connector does not require any switching.

On page 3-17, replace part of Figure 3-7, Rear Panel Features, with the partial figure on

page 10 of this Insert.

On page 3-39, in Table 3-7, Response to Clear Message, incorporate the following:

Parameter

10 MHz Reference Source

Condition

Internal 10 MHz Reference

24001 E. Mission Avenue, Liberty Lake, WA 99019-9599 U.S.A.

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