HP 8901B Operation And Calibration Manual page 106

3-8
Help
input
Problem
Solving Measurement
Problems
The HP 8901B has been designed to feed back information about its
operating status. When the
HP
8901B detects that the input signal or
operating conditions are preventing it from making an accurate, reliable
measurement, it alerts you by placing an error or dash code in its display.
Operating
Problem
The circumstances that can cause the HP 8901B to display an error code are
classified into one of two categories:
0
Input Problem, caused by input signal conditions, or
0
Operating Problem, caused by the selection of incompatible
operating functions.
Error
Certain errors are caused only by an input problem, other errors are caused
only by an operating problem, and some errors can be caused by either.
05, 08, 10, or 16 09, 11, 12, 20 thru
24, or 26
The errors that can be caused only by an input problem and the errors that
can be caused only by an operating problem are listed in the chart below.
If your instrument is displaying one of these errors, proceed directly to
Table
3-1.
Modulation and
Audio
Error Codes and take the recovery
action recommended.
If you did not find your error listed in the chart, or if your instrument
is displaying dashes or a questionable measurement, perform the
following procedure.
1.
Press the green
AUTOMATIC OPERATION
key. This cancels all
function settings that can cause the HP 8901B to display an error code.
2.
Compare the operating status of your HP 8901B after pressing the
AUTOMATIC OPERATION
key
with
the following list of conditions.
After you have identified the description that best describes your
instrument's condition, take the action recommended for that condition.
Same
Error
If the error or reading remains the same after the
AUTOMATIC OPERATION
key has been pressed, the error is being caused by an input problem.
Look up the error code in Table 3-1 and take the action recommended for
"Input Problem".