Rohde & Schwarz SMBV100B - CONTROL LENGTH: Controllength

Configuring the Internal Baseband Source
R&S
®
SMBV100B
181User Manual 1178.4460.02 ─ 03
A query of ARB:CLOCk? after loading the waveform returns the value set using the
CLOCK tag. This value can later be altered with the command ARB:CLOCk?.
Example:
{CLOCK: 54000000}
BB:ARB:WAV:TAG? 'CLOCK'
Queries the content of the CLOCK tag.
Response: 54000000
The clock frequency is set to 54 MHz.
Usage: Setting only
{CONTROL LENGTH: ControlLength}
(optional / recommended for marker and control lists)
The tag specifies the length of all control or marker list in ASCII format.
The control length influences the way the marker and control lists are processed, in
particular the way traces are repeated; see Figure 3-18.
Figure 3-18: Example: Processing of MARKER TRACE if CONTROL LENGHT is specified
If the CONTROL LENGTH tag is not used, the marker and control list length are deter-
mined by the last position, that is the last {Pos:State} couple, defined in the particular
[TRACE] LIST tag; see Figure 3-19.
Figure 3-19: Example: Processing of MARKER TRACE if CONTROL LENGHT is not used
To maintain marker signals and waveform data synchronized, set the CONTROL
LENGTH to be equal to the number of samples specified with the tag SAMPLES.
See also Chapter 3.6.4.6, "How to Define Periodically Repeating Traces", on page 172.
Example:
{CONTROL LENGTH: 500}
SOURce:BB:ARBitary:CLISt:TAG? 'CONTROL LENGTH'
Queries the length of the control list.
Response: 500
Using the Arbitrary Waveform Generator (ARB)