R&S RTA4000, Руководство пользователя

Страница: 396 / 861

Logic analyzer (option R&S RTA-B1, MSO)
R&S
®
RTA4000
396 User Manual 1335.7898.02 ─ 08
Remote command:
DIGital<m>:LABel:STATe
on page 772
Predefined Label ← Label
Selects a predefined label text. You can edit the text with "Edit Label".
Edit Label ← Label
Opens on-screen keypad to enter a label text. If you previously have selected a prede-
fined label, it is already written in the entry line, and you can modify it.
The maximum name length is 8 characters, and only ASCII characters provided on the
on-screen keypad can be used.
Remote command:
DIGital<m>:LABel
on page 771
15.3 Triggering on logic channels
Each logic channel can be used as trigger source. Using the pattern trigger, you can
trigger on logical combinations of analog and digital channels. Also, you can define a
trigger holdoff time.
If you trigger on logic channels, the threshold is used as trigger level.
The following trigger types are available if the trigger source is a logic channel:
●
Edge
●
Width
●
Pattern: the pattern can use all active logic channels
●
Timeout
For analysis of serial protocols, you configure the protocol using logic channels as
sources, and trigger on trigger type "Serial
Bus". For details, see the chapter describ-
ing the relevant bus.
15.4 Analyzing logic channels
The main analysis tools for logic channels are serial protocol analysis ([Protocol]) and
the pattern triggers.
Furthermore, you can display all logic channels and change the vertical scale position.
You can also zoom into the display ([Zoom]).
To measure logic channels, you can use automatic and cursor measurements as
usual.
See also Chapter 8.2, "Automatic measurements" , on page 147 and Chapter 8.3, "Cur-
sor measurements" , on page 159.
You can also export the waveform data: [Save Load] key > "Waveforms"
Analyzing logic channels