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Serial Bus Analysis
R&S
®
RTC1000
138User Manual 1335.7352.02 ─ 04
IDLE TIME
Sets the minimum time between the stop bit of the last data and the start bit of the new
data. The idle time defines the start of a transmission and the exact start of a frame
(one or more symbols, most commonly bytes). The idle time is important for correct
decoding and triggering, regardless of the trigger type. A start bit within the idle time is
not recognized. You can enter the value using the [Universal] knob or the [KEYPAD].
11.5.2 UART/RS-232 BUS Triggering
After the bus configuration is completed, you can trigger on various events.
To trigger on events
1. In the Trigger section, press the [TYPE] key.
2. Select "SERIAL BUS".
3. Press the [SOURCE] key in the Trigger section.
4. Choose "UART" by pressing the respective softkey.
The bus is only available if it was configured earlier.
5. Press the [FILTER] key in the Trigger section to list the trigger conditions of the
bus.
6. Configure the trigger condition. Possible conditions are described below.
7. Press the Back softkey until all menus are closed.
The oscilloscope triggers on the condition. For measurements without measuring
object, refer to chapter
Chapter 10.2.5, "Serial Buses", on page 118.
UART/RS-232 BUS (Option R&S RTC-K2)
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