Trace:points? <Name - HP E8402A User And Service Manual

Comments
Error Conditions
Reset Condition
Related
Commands
TRACe:POINts? < name >
Chapter 3
•
Data is stored every 10 seconds over a 1 hour period. The first integer in the
data block is the most recent reading. Integer data values retrieved by the
TRACe? query are scaled to obtain useful information. The conversion
formula are:
-- Measurement conversion:
measurement = data value
-- Time conversion:
time = data point number x
•
TRACe:PREamble should always follow its trace data. Otherwise, the xorigin
is undefined.
The following table lists the most common error conditions and causes. Error
numbers and corresponding messages can be found using
Number Message
-224 "Illegal Parameter"
-109 "Missing Parameter"
*RST has no effect on the TRACe data.
TRACe?, TRACe:POINts?
returns the number of points in the <name> trace. This same data
TRACe:POINts?
is available through
TRAC:PRE?
except the external 5Vdc supply (P5EXt). Refer to TRACe[:DATA]:PREamble for
detailed information.
– y y +
reference increment
– x +
reference increment
Probable Cause
The <name> parameter was not correct.
The <name> parameter was omitted.
At this time, 360 points are kept for each trace
Programming the Enhanced Monitor
y
origin
x
origin
query.
SYSTem:ERRor?
171