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QHYCCD外触发输入模式说明(Exernal Trigger Mode Manual)
2020 年 12 月 21 日

下述相机适用
QHY174,QHY550,QHY342,QHY432等全局快门相机
 
Suitable for the following camera:
QHY174,QHY550,QHY342,QHY432 etc global shutter camera
 
高级控制工具下载:
Advanced Control Tools Download:

采用SHARPCAP作为拍摄软件,QHYCCD高级控制工具作为外触发模式设置软件。
1.启动SHARPCAP,可以看到连续视频图像输出。
2.启动高级控制工具,勾选SDKAPI_MODE,点击CONNECT
 
User the Sharpcap software as the capture software. QHYCCD Advnanced tools as the External trigger mode setting software.
1.Run SharpCAP, You will see the live video appearing
2.Run advanced control tools. Check on the "SDKAPI_MODE" Click "Coonect"





(方式1)硬件外触发,曝光时间由外触发脉冲宽度决定
在Trig Input Souce触发输入源下拉选择中,选择Trig Input Pin Direct. 含义是触发输入源为相机的外触发输入端口(经过光耦隔离的,RCA黄金插头);在Trig Input Pin Phase输入触发信号相位中,选择Rising Edge,含义为上升沿开始触发。在Trig Controller Enable Source中任选一项(该选框对于此模式没有意义,因此任选一个即可)
 
(Mode 1) Hardware External Trigger. The exposure time is depent on the external pulse width
In the Trig Input Souce trigger input source drop-down selection, select Trig Input Pin Direct. The meaning is to trigger the input source as the external trigger input port of the camera (opto-coupled isolated, RCA gold plug); Select one in Trig Controller Source (the marquee doesn't make sense for this mode, so choose one)

按TRIG MODE ON按钮。会发现SHARPCAP软件中的视频图像停止。相机已经进入了等待外触发状态。通过光电隔离外触发输入端口,输入一个高电平。会发现图像会拍摄一帧,且该高电平的持续时间越长,图像的曝光时间越长。在该模式下,曝光时间等于高电平的持续时间。
 
Press the TRIG MODE ON button. You will find that the video image in sharpCAP software stops. The camera has entered a waiting outside trigger state. Trigger the input port via the photoelectric isolation and enter a high level. You'll find that the image takes a frame, and the longer the duration of the high level, the longer the image will be exposed. In this mode, the exposure time is equal to the duration of the high level.
 
(方式2)硬件外触发,曝光时间由软件设置
按下图进行设置。在Trig Input Source中选择XTRIG CONTROLLER,Trig Input Phase中选择Rising Edge, Trig Controller Enable Source中选择Trig Controller Enabled by Hardware。 并且输入曝光时间,比如50ms。然后点击TRIG MODE ON按钮,即可完成该模式的设置以及曝光时间设置。
 
(Mode 2) Out-of-hardware trigger, exposure time set by the software
Press the diagram to set it up. Choose XTRIG CONTROLLER in Trig Input Source, Trig Input Phase to Rise Edge, Trig Controller Controller Enable Source select Trig Controller by Hardware. And enter exposure time, such as 50ms. Then click the TRIG MODE ON button to complete the setting of the mode and the exposure time setting.

通过光电隔离外触发输入接口,输入一个短暂的高电平,就会发现SHARPCAP中图像拍摄了一帧。需要注意,如果持续输入高电平,在曝光时间较长的设置下,相机会持续进行拍摄。为了避免连续拍摄的情况发生,建议输入的触发的高电平时间较短,例如:1ms
 
By triggering the input interface outside the photoelectric isolation, a short high level is entered and a frame is captured on the image in SHARPCAP. Note that if the input is consistently high, the camera continues to shoot under the setting of a longer exposure time. To avoid continuous shooting, the high-level time of the input trigger is short, e.g. 1ms
 
 
(方式3)软件外触发,曝光时间由软件命令间隔决定
 
该模式下,通过软件发送一个开始曝光指令,然后软件进行等待延迟。然后发送一个结束曝光指令。即可实现一个软件控制的触发。其曝光时间等于开始曝光和结束曝光命令之间的时间。按照如下设置即可。设置完毕以后,点击TRIG MODE ON送入指令。然后点击Software Register Trig Test按钮,即可观察到拍摄。修改曝光时间,仅需要修改曝光时间框里面的值,而不必再点击TRIG MODE ON,只需要再点击Software Register Trig Test按钮即可。
 
(Mode 3) Out-of-software trigger, exposure time is determined by the software command interval
In this mode, the software sends a start exposure instruction through the software, and then the software waits for a delay. Then send an end exposure instruction. A trigger for software control is possible. Its exposure time is equal to the time between the start and end exposure commands. Just follow the settings below. Once set up, click TRIG MODE ON to feed the instruction. Then click on the Software Register Trig Test button to observe the shooting. To modify the exposure time, you only need to modify the value sits in the exposure time box, instead of clicking TRIG MODE ON, just click the RegisterSoftware Trig Test button.


(方式4)软件外触发,曝光时间由软件设置
 
在方式3中,存在一个曝光时间不那么稳定准确的问题。原因在于上位机发送两次指令的时间间隔,不是那么精确,会受到CPU延迟,繁忙等因素的影响。因此还提供了方式4。按照下图设置该模式
 
(Mode 4) Out-of-software trigger, exposure time set by the software
In Mode 3, there is a problem with a less stable and accurate exposure time. The reason is that the time interval between the two instructions sent by the upper computer is not so precise and will be affected by CPU delay, busyness and other factors. Therefore, mode 4 is also provided. Set the pattern as shown below

在本模式中。曝光时间是通过软件设定的,由相机内部的硬件执行,而不是由上位机开始和结束曝光的两次命令的间隔决定的,因此曝光时间是精确的,重复性是非常好的。上位机仅仅需要发出开始曝光和结束曝光指令即可。两指令之间间隔尽量短即可,比如间隔1ms左右。相机会按照软件设定的曝光时间,而不是命令间隔时间进行曝光。
 
In this mode. Exposure time is set by the software and performed by the hardware inside the camera, rather than by the interval between the two commands that the upper machine starts and ends exposure, so the exposure time is accurate and repeatability is very good. The upper machine only needs to issue a start exposure and end exposure instructions. The interval between the two instructions is as short as possible, for example, about 1ms. The camera will be exposed according to the exposure time set by the software, not the command interval.
 
(方式5)硬件外触发,序列拍摄
 
该模式下,可以通过外部触发的方式实现连续拍摄。在没有给触发信号之前,相机处于等待状态,而一旦给出触发信号,相机会开始连续拍摄。曝光时间由软件设定。
按照下图进行设置。设置完毕以后,按TRIG MODE ON按钮,即可让相机处于等待状态,然后从光耦隔离触发输入口输入一个高电平脉冲,即可触发相机连续进行拍摄。(需要注意,QHY174在曝光时间较短的时候,该模式不工作,曝光时间较长可以工作。)如果要进入下一次等待状态,则点击TRIG MODE ON,即可让相机恢复到等待状态,等待下一个外部触发脉冲到来。
 
(Mode 5) Out-of-hardware trigger, sequence shooting
In this mode, continuous shooting can be achieved by means of external triggering. The camera is waiting until a trigger signal is given, and once a trigger signal is given, the camera starts shooting continuously. Exposure time is set by the software.
Follow the figure below to set it up. Once set up, press the TRIG MODE ON button to keep the camera waiting, and then enter a high-level pulse from the optically isolated trigger input to trigger continuous shooting by triggering continuous shooting by the camera. (It is important to note that QHY174 does not work when the exposure time is short, and the exposure time is longer.) If you want to enter the next wait state, click TRIG MODE ON to restore the camera to the waitstate and wait for the next external trigger pulse to arrive.

(方式6)软件外触发,序列拍摄
 
和方式5类似,只是触发源由外部硬件输入,变为软件控制。按下图设置好以后,点击TRIG MODE ON,相机进行等待状态,此时点击Software Register Trig Test按钮,发出开始信号以后,可看到开始连续拍摄。
 
(Mode 6) Out-of-software trigger, sequence shooting
Similar to Mode 5, the trigger source is entered from external hardware to software control. After pressing the diagram to set up, click TRIG MODE ON, the camera waits, at this time click on the Software Register Trig Test button, after the start signal, you can see the start of continuous shooting.


其他说明:
 
 
SHARCAP软件有一个随机水平横条纹的降噪功能,在右侧菜单栏。全局快门的CMOS,例如174等,水平随机横条纹在高增益下较为明显,可以适当调节此栏目。对比下图,没有开启和开启的效果,可见明显区别
 
Additional instructions:
 
The SHARCAP software has a random horizontal horizontal stripe noise reduction feature in the right menu bar. CMOS of the global shutter, such as 174, horizontal random horizontal stripes are more obvious at high gain, and this column can be adjusted appropriately. Comparing the image below, there is no on and off effect, and the difference can be seen


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