Rohde & Schwarz 1145.1010.04/05/06, Operating Manual

Page: 558 / 813

CALCulate R&S
®
ZVA/ZVB/ZVT
1145.1084.12 6.96 E-6
CALCulate<Ch/Tr>:MATH[:EXPRession][:DEFine] <expression>
Defines a simple mathematical relation between traces. To calculate and display the new mathematical
trace, the mathematical mode must be switched on (
CALCulate<Ch/Tr>:MATH:STATe ON
).
This command places some restrictions on the mathematical expression and the operands. Use
CALCulate<Ch/Tr>:MATH[:EXPRession]:SDEFine to define general expressions.
<Ch/Tr> Channel number used to identify the active trace. If unspecified the
numeric suffix is set to 1.
<expression> (<operand1><operator1><operand2>[<operator2><operand3>])
The expression must be enclosed in brackets.
Parameters Operands: See list of trace names in section TRACe
Operators: +, -, *, /
*RST value –
SCPI,
Command
Types Confirmed, no query. The defined expression can be queried using
CALCulate<Ch/Tr>:MATH[:EXPRession]:SDEFine?
Example:
*RST; CALC:MATH:MEM
Copy the current state of the default trace Trc1 to a memory trace
named 'Mem2[Trc1]'. The memory trace is not displayed.
CALC:MATH (CH1DATA / MDATA2)
Define a mathematical trace, dividing the data trace by the stored
memory trace. The mathematical trace is not displayed
CALC:MATH:STAT ON
Display the mathematical trace instead of the active data trace.
CALCulate<Ch/Tr>:MATH[:EXPRession]:SDEFine '<string>'
Defines a general mathematical relation between traces. To calculate and display the new
mathematical trace, the mathematical mode must be switched on (
CALCulate<Ch/Tr>:MATH:STATe
ON
).
<Ch/Tr> Channel number used to identify the active trace.
'<string>' String parameter for the mathematical expression, enclosed in brackets.
The string format must correspond to an allowed string in the
Define
Math dialog.
Parameters Operands, operators and functions; see table below.
*RST value –
SCPI,
Command
Types
Device-specific, command or query. This command also queries a
mathematical expression defined via
CALCulate<Ch/Tr>:MATH[:EXPRession][:DEFine]
.