BRUEL & KJAER 1621 - Service Instruction; Trouble Shooting; Modifications; Spare Parts

BRUEL & KJkR
Service Instruction
1621
Ncerum - Denmark
037- 0125
Table of contents:
Service Instruction
Technieal
Description
Adjustment Procedure
ZE 0161 Filter C;rcuit
ZG 0109 Filter and Power Supply Circuit
ZH 0159 SynchronlZatlon Circu;t
Parts List
with Circuit Diagram.
Tunable Band Pass Filter
Type
1621
Valid from serial no, 694126
Trouble Shooting
page date
9.77
If any faults should occur please check the instrument according to the
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AdJustment Procedure.
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When a fault has been traced and corrected, the valtages and adjust·
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ments influenced by the eorreetion must be rechecked, The complete in·
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strument should then be tested 10 make sure thaI all basic functions are
operative.
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2-2
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The tolerances given in these notes are intended for use as guide for ad-
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justments,
1
2
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Before correcting any apparent deviation make sure that the measuring
instrument has tolerances small enough not to affeet the measuremenl.
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Modifications
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Duc to the constant teehnical progress the instrument will be modified
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from time to time in order to provide continously improvad performanee,
For this reason there may be small differencies between the instrument
and the Service Instruction,
However, the loeal Representative Service IS in possession of all informa-
tion regarding the modifications that have been made.
Spara Parts
Please state type and serial number of the instrument when ordering
spare parts,
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