Calibrating and Adjusting
This chapter normally gives you instructions for calibrating and adjusting the logic
analysis system. Because the HP 16500C/16501A requires no calibration, only
adjustment instructions are included.
Adjustments
The only adjustments to the logic analysis system are adjustments to the color CRT
monitor assembly.
Use the following procedures to adjust the CRT module to compensate for magnetic
influences causing misconvergence.
WARNING
Hazardous voltages exist on the power supply, the CRT, and the CRT driver board. To avoid
electrical shock, read and follow the Safety and Warning considerations at the end of this
manual before performing adjustment procedures.
Adjustment Interval
DO NOT PERFORM THESE ADJUSTMENTS AS A PART OF ROUTINE
CALIBRATIONS. The following procedures are provided only for the few extreme
cases where either the earth’s magnetic field or the user’s environment cause an
unusable display due to misconvergence that cannot be corrected by degaussing the
entire CRT screen.
DO NOT perform the procedures in this chapter before first degaussing the CRT
screen using the rear-panel degaussing switch. In extreme cases of magnetism, it
may be necessary to degauss the CRT using a conventional external television-type
degaussing coil.
Adjustment Personnel
It is recommended that these adjustments be performed only by qualified personnel
who are familiar with color CRT convergence procedures.
Equipment Required
The instrument firmware supplies the display patterns necessary for adjustment.
The only tool required is a nonmetallic adjustment tool:
• Sony Part Number 4-367-065-01
• HP Part Number 8710-1355
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