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4-1. INTRODUCTION
This section provides information on when to
calibrate the module and how to calibrate, ad-
just and warm it up. Also included in this sec-
tion are equipment setups and a procedure for
installing the extender board.
4-2. CALIBRATION INTERVAL
The H P 16530/31 A Oscilloscope Module can
be calibrated from the front panel without ac-
cess to the interior of the instrument. This
procedure sets the oscilloscope calibration fac-
tors and stores them on the operating disc.
To maintain proper calibration, this calibration
should be performed at approximately two
year intervals when the instrument is being
used under normal operating conditions. If the
instrument is used more than one shift per day
the calibration interval may need to be shorter.
Immediate calibration is required it one of the
following occurs:
•
Oscilloscope module is installed or
replaced
•
Operating disc is changed
•
Card configuration is changed
•
Oscilloscope module is repaired
•
Ambient temperature changes more
than 1 0 degrees Celsius
Before the module is adjusted, it should be
calibrated and the performance tests in
Section Ill should be done. If the performance
tests are within specifications, then adjust-
ments are not necessary.
If either card is repaired, the oscilloscope
module should be adjusted. New modules are
pr?-adjusted at the factory to meet the
specifications in Section I. If adjustments are
required, please read the safety summary at
the front of this manual.
H P 16530/31 A - Adjustments
SECTION IV
ADJUSTMENTS
4-3.
MAINTAINING CALIBRATION
INTEGRITY
Calibration factors depend on the system disc,
mainframe, acquisition cards and module con-
figuration all staying together. If the system
disc or acquisition cards are interchanged be-
tween mainframes or the scope module con-
figuration is changed, calibration must be
repeated. Recalibration is very easy to do. See
paragraph 4-7, "Calibration". In an environ-
ment in which the possibility of sharing oscil-
loscope modules and system discs exist, we
recommend taking the following precautions in
order to maintain calibration integrity:
1.
Install oscilloscope module in bottom
slots.
2.
Boot system using rear disc drive.
3.
Perform calibration.
4.
Seal oscilloscope module to
mainframe.
5.
Remove disc and write protect it.
6.
Reinstall disc and seal it in the rear
disc drive.
4-4. 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 tor the failure of the cus-
tomer to comply with these safety
requirements.
4-1
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