User`s guide

Before You Call Hewlett-Packard
Check the Basics
A problem often can be solved by rechecking what was being done when the problem
occurred. A few minutes spent in performing some simple checks may save waiting for your
instrument to be repaired. Before calling Hewlett-Packard or returning the spectrum analyzer
for service, please make the following checks:
1. Is the rear-panel voltage selector switch set correctly? Is the line fuse good?
2. Does the line socket have power?
3. Is the analyzer plugged in to the proper ac power source?
4. Is the analyzer turned on? Check that the green light above ILINE) is on, indicating that the
power supply is on.
5. If other equipment, cables, and connectors are being used with the HP 8590 Series
spectrum analyzer, are they connected properly and operating correctly?
6. Review the procedure for the test being performed when the problem appeared. Are all
the settings correct?
7. If the display is dark or dim, turn the intensity knob clockwise.
8. If the display focus is poor, reduce the brightness with the intensity knob, or adjust the
focus as described in Chapter 2 of this user’s guide.
9. If the display position is offset, press ICAL), More 1 of 4 , CRT VERT POSITION and
use the knob or step keys to adjust the vertical position. Press (CAL), More 1 of 4 ,
CRT HORZ POSITION to adjust the horizontal position. Press a), CAL STORE to save the
new vertical and horizontal display position.
10. If you wish to reset the spectrum analyzer configuration to the state it was in when it was
originally shipped from the factory, use DEFAULT CONFIG . To access DEFAULT CONFIG ,
press [CONFIG), More 1 of 3 , DEFAULT CONFIG, DEFAULT CONFIG. (DEFAULT CONFIG
requires a double key press.) See the softkey description for DEFAULT CONFIG
in Chapter 7.
11. Is the test being performed, and the results that are expected, within the specifications
and capabilities of the spectrum analyzer? See specifications and characteristics in your
calibration guide, for spectrum analyzer specifications.
12. Are the spectrum analyzer measurements obviously inaccurate? If so, the spectrum
analyzer correction factors may have been removed from the measurement results. If this
occurs, perform the frequency and amplitude self-calibration routines given in “Improving
Accuracy with Self-Calibration Routines” in Chapter 2. After running these routines, press
CAL STORE , then perform the confidence test. Perform the confidence test by pressing
(CAL), More 1 of 4 , CONF TEST. The spectrum analyzer performs a self-test by cycling
through its major functions. The confidence test is performed within 1 to 2 minutes. If the
unit does not function properly, messages appear on the screen. See “Error Messages” for
explanations of error messages. If error messages appear, record the messages and refer
to the spectrum analyzer service guide or contact the nearest Hewlett-Packard Sales and
Service Office listed in Table 9- 1.
9-2 If You Have A Problem