R&S WinIQSIM2 Software Manual - Rohde & Schwarz

R&S ® WinIQSIM2
Remote Control Commands
R&S Signal Generator Waveform and List Format
+1.0 -> 32767 -> = 0x7FFF
0.0 -> 0 -> = 0x0000
-1.0 -> -32767 -> = 0x8001
The ​figure 7-4 shows the calculation and conversion steps. The highlighted columns
contain the resulting I and Q values represented in Little endian format.
Fig. 7-4: I and Q values calculation and conversion
3. Use an ASCII editor which is able to handle binary data and create and add the
mandatory tags, the ​TYPE, the ​CLOCK and ​LEVEL OFFS before this binary data set
can be further processed.
An example of the SICO.wv file contents could be:
{TYPE: SMU-WV, 0}{CLOCK: 10e6}{LEVEL OFFS: 3.010300,0.000000}
0000FF7F8E27BB79 ... 72D8BB79
To simplify the example, the checksume is set to 0, i.e. the instrument does not evaluate
a checksum.
Tip: The tags TYPE, CLOCK, LEVEL OFFS and WAVEFORM are mandatory for each
waveform. All other tags are optional and can be inserted after the TYPE tag in arbitrary
order.
4. Pack the binary data into a ​WAVEFORM tag with the described structure.
{WAVEFORM-Length: #I0Q0I1Q1I2Q2 ... InQn}
●
●
●
calculate the Length
Length = Number of I/Q pairs * 4 + 1 = 20*4 + 1 = 81 bytes
place the string {WAVEFORM-81:# at the beginning of the data set
place the symbol } at the end of the data set
The contents of the waveform file SICO.wv for 20 I/Q pairs is now ready for operation
and reads:
Software Manual 1008.0858.42 ─ 10
182