22
©2019 Guangzhou ZHIYUAN Electronics
Date: 2019/01/17
User Manual
V1.00
C
Guangzhou ZHIYUAN Electronics Co., Ltd.
ZDS2000B Series Oscilloscope User Manual
4.4 Trigger System
Figure 4-4: Trigger system
Characteristics
Description
Trigger Source
ZDS2022B Plus:
CH1, CH2, CH3, CH4, external trigger, power trigger
ZDS2024B Plus:CH1
、
CH2
、
CH3
、
CH4
、外触发、市电触发
Trigger mode
Automatic,normal
Trigger coupling
DC, AC, high frequency rejection (50KHz), low frequency rejection
(50KHz)
Trigger hold-off range
8ns ~ 16s
Trigger sensitivity
Internal
：
0
～
1.5div, external
：
300mV
Trigger level
Internal
：±
5div from the center of the screen
，
external
：
±5V
4.5 Trigger Type
Figure 4-5: Trigger type
Model
Trigger Type
Basic Trigger
Protocol Trigger
ZDS2022B Plus
ZDS2024B Plus
Edge, Pulse, Runt,
Setup/Hold, Delay,
N
th
-Edge, Pattern,
Time-out, Pos-Runt,
Slope, Video
UART, I2C, SPI, CAN, CAN FD, USB,
LIN,SD_SPI,SD_SD,Wiegand,FlexRay,DS18B20
,PS/2,MDIO,DALI,HDQ,1-Wire,IrDA,Manchester,
DHT11,SHT11
Figure 4-6: Basic trigger type description
Trigger Type Symbol
Description
Edge trigger
Includes rising edge trigger, falling edge trigger and rising/falling edge
trigger. The edge will be triggered when reaches the trigger level.
Pulse trigger
The positive pulse or negative pulse is triggered at the specified pulse
width time.
Slope trigger
Triggered when the pulse edge rate is faster/slower than the specified
value.
Video trigger
Trigger on the specified line, random line, even field, odd field or random
field of NTSC, PAL and SECAM video signals.
Runt trigger
Trigger when the pulse amplitude is greater than or less than the set
value.
Pos-Runt trigger
Trigger when the pulse amplitude is greater than the normal amplitude.
Pattern trigger
The pattern types of two channels are high level, low level, ignore, rising
edge and falling edge. The waveforms which meet the conditions will be
triggered after setting.
Nth-Edge trigger
The signal is triggered at the Nth edge after idle.
