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Trace/Detector
Notes The Trace Math Function command has 6 main set of parameters:
- Set 1 defines the “result trace”:
TRACE1|TRACE2|TRACE3|TRACE4|TRACE5|TRACE6
-Set 2 defines the “function”:
PDIFference|PSUM|LOFFset|LDIFference|OFF
- Set 3 is a “trace operand” (1):
TRACE1|TRACE2|TRACE3|TRACE4|TRACE5|TRACE6
- Set 4 is a “trace operand” (2):
TRACE1|TRACE2|TRACE3|TRACE4|TRACE5|TRACE6
- Set 5 defines the “Log Offset” (in dB).
- Set 6 defines the “Log Difference Reference” (in dBm).
Note that the trace math mode is an enumeration; that is, when a math
function is set for a trace it turns off any math function that is on for that trace
and sets the new math function.
The parameters sent in the command are reflected in the values in the key
menu. There is no default for any parameter; all 6 parameters must be sent to
satisfy the parser. Failure to specify a parameter will result in a missing
parameter error.
Note that for some of the math modes some of the parameters are not relevant.
For those modes, the parameters are ignored, and sending “,,” is sufficient for
those parameters.
The query returns the math mode, the operand traces, the offset and the
reference for the specified trace, all separated by commas. The return value of
irrelevant parameters is undefined; empty fields (“,,”) would be desirable.
Remote command examples are included in each section below.
Dependencies Trace Math is not available if
Normalize is on.
None of the trace operands can be the destination trace. If any of the three
trace math commands is sent with a destination trace number matching one of
the operands a warning is generated and the function does not turn on.
Couplings Whenever a math function is turned on for a trace, that trace is set to Display =
On and Update = On.
Preset OFF,TRACE5,TRACE6,0,0 | OFF,TRACE6,TRACE1,0,0 |
OFF,TRACE1,TRACE2,0,0 | OFF,TRACE2,TRACE3,0,0 |
OFF,TRACE3,TRACE4,0,0 | OFF,TRACE4,TRACE5,0,0
State Saved The trace math function for each trace is saved in Instrument State.
Status Bits/OPC dependencies *OPC can be used to detect the completion of a sweep, which will also
correspond to the completion of the math operation, since all math takes place
during the sweep
Initial S/W Revision Prior to A.02.00