Rohde & Schwarz SMW200A - Page 362

Configuring the Internal Baseband Source
R&S
®
SMW200A
347User Manual 1175.6632.02 ─ 16
We assume, that a multi-segment sequence composed of 4 segments (Seg#0, Seg#1,
Seg#2 and Seg#3) is created and loaded in the ARB (see "Generating a multi-segment
waveform file (basic workflow)" on page 345). The required output order of the seg-
ments is Seg#0, Seg#3 [2], Seg#2. The instrument is operated manually, the ARB gen-
erator is in active state, and the instrument output is switched on.
1. Select "ARB > Trigger In (MSW) > Next Segment Trigger In > Next Segment Mode
= Next Segment"
The transition between the segments is abrupt.
2. To enable manual next segment triggering, select "ARB > Trigger In (MSW) > Next
Segment Trigger In > Next Segment Source = Internal"
3. To enable manual triggering, select "ARB > Trigger In (MSW) > Mode = Armed
Auto". Select "ARB > Trigger In (MSW) > Source = Internal"
4. Execute "ARB > Trigger In (MSW) > Execute Trigger" to trigger the signal genera-
tion.
The "ARB > Trigger In (MSW) > Next Segment Trigger In" settings display the cur-
rently output segment: "Current Segment Name = Seg#0" and "Curent Segment
Index = 0". Seg#0 is output continuously.
5. Set "ARB > Trigger In (MSW) > Next Segment Trigger In > Segment = 3" to output
the second segment in the sequence order.
The parameter "ARB > Trigger In (MSW) > Next Segment Trigger In > Current
Segment Index" changes to segment index 3. Seg#3 is output continuously.
6. Execute "ARB > Trigger In (MSW) > Execute Trigger" to restart Seg#3.
7. Set "ARB > Trigger In (MSW) > Next Segment Trigger In > Segment = 2" to output
the third segment in the sequence order.
Seg#2 is output continuously.
To switch over to Seg#0, change the "ARB > Trigger In (MSW) > Next Segment
Trigger In > Current Segment Index", etc.
Tip: The ARB sequencer mode provides the necessary settings to achieve the
same goal in a more convenient way, see "To configure a multi-segment sequence
using the play list function" on page 349
Faster flexible dynamic switch over
When using Creating a remote control via an external computer, the following settings
enable switching times of approx. 20 ms for segments with the same sample rate and
approx. 200 ms for segments with different sample rates:
●
"ARB > Trigger In (MSW) > Next Segment Trigger In > Next Segment Mode = Next
Segment"
●
"ARB > Trigger In (MSW) > Trigger Mode = Auto"
●
"ARB > Trigger In (MSW) > Trigger Source = Internal"
Generating Multi-Segment Waveform Files