Rigol DHO1000 Series User Manual

Idle Time
Click or tap the input field of Idle Time, and then use the pop-up numeric keyp
ad to
set the idle time before the edge counting in Nth edge trigger. You can also use the
corresponding multipurpose knob to set the value.
Edge Count
Click or tap the input field of
Edges, then use the pop-up numeric keyp
ad to set the
value of "N" in Nth edge trigger. You can also use the corresponding multipurpose
knob to set the value. The available range is from 1 to 65,535.
Trigger Mode
In
Sweep, select Auto, Nor
mal, or Single as the trigger mode. For details, refer to
descriptions in Trigger Mode .
Trigger Parameter Setting
You can refer to Noise Rejection to set the noise rejection under this trigger type.
Trigger Level
Click or tap the
Level input field to set the trigger lev
el with the pop-up numeric
keypad. You can also use the front-panel trigger level knob or the corresponding
multipurpose knob to set the trigger level. For details, refer to descriptions in
Trigger
Level . The current trigger level is displayed in the trigger information label at the top
of the screen.
8.7.13 RS232 Trigger
RS232 bus is a serial communication mode used in data transmission between PCs or
between a PC and a terminal. In RS232 serial protocol, a character is transmitted as a
frame of data. The frame consists of 1 start bit, 5-8 data bits, 1 check bit, and 1-2 stop
bits. Its format is as shown in the figure below. This series oscilloscope triggers when
detecting the start frame, error frame, check error, or the specified data of the RS232
signal.
Stop BitCheck BitData BitStart Bit
1 bit 5~8 bits 1 bit 1~2 bits
Figure 8.24 Schematic Diagram of RS232 Protocol
Triggering the Oscilloscope
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DHO1000 User Guide
99
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Rigol DHO1000 Series Specifications

General

Brand	Rigol
Model	DHO1000 Series
Category	Test Equipment
Language	English