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The product has a built-in 2*10Gbps fiber socket. It can work with the QHYCCD PCIE2.0x8 data grabber card. The fiber
interface is for the requirement of the professional obs.  It will give the following advantages than the USB3.0 interface.  Then
what is the benefit of the Fiber Interface?

 

Higher  data  rate.

  One  10Gigabit  Fiber  can  transfer  maximum  10Gbps  data.  The  actual  data  rate  can  get  about

800MBytes/s. While the USB3.0 is 5Gbps and the actual data rate is about 350MByte/sec. Use the two 10Gigabit fiber
can get about 1.6GBytes/s speed. The IMX455 sensor has the high-speed mode like the 10FPS 14bit full resolution mode
and 30FPS 8K VIDEO mode. The data rate of these modes is much more than USB3.0.

Very  long  transfer  distance.  

The  fiber  is  hundreds  of  times  longer  than  USB3.0.  USB3.0  can  only  transfer  3meter  to

5meter.  For  longer  distances,  it  needs  the  extender  cable  but  can  just  get  10meter  to  15meter.  While  the  Fiber  can
transfer 300meter directly by default optic module; with the long-distance optic module, it can transfer up to 40km.

Solid  stable  and  no  affected  by  EMI. 

One  major  factor  that  causes  the  camera  to  hang  is  the  EMI  issue.  The  USB3.0

transfer maybe gets effect by the EMI in the transfer patch. Like the static and other high-power device emitted. The
EMI will cause the transfer data packet to get a CRC error and cause the image loss. A long USB cable is easier to get this
problem. Light can not be affected by the EMI. So with the fiber transfer, it will get everything very stable.

 

USB3.0

USB3.0 is a very popular interface and very easy to use. USB3.0 can not support a transfer distance of more than 3meter.  If
you want to get a long-distance under USB3.0, QHYCCD supplies the optional 5meter and 10meter USB3.0 extender cable
with a built-in amplifier.

 

GPIO

There is a 6pin GPIO socket on the camera backside. It can be configured into different modes, or customized as the user
requests to meeting more complex timing by re-programming the FPGA.

 

Specifications

Model

QHY268PRO M

COMS Sensor

SONY IMX571 M

Mono/Color

Mono Only

FSI/BSI

BSI

Pixel Size

3.76um x 3.76um

Summary of Contents for QHY268PRO M

Page 1: ...ow the photosensitive layer As a result more incoming photons strike the photosensitive layer and more electrons are generated and captured in the pixel well This ratio of photon to electron production is called quantum efficiency The higher the quantum efficiency the more efficient the sensor is at converting photons to electrons and hence the more sensitive the sensor is to capturing an image of...

Page 2: ...ter directly by default optic module with the long distance optic module it can transfer up to 40km Solid stable and no affected by EMI One major factor that causes the camera to hang is the EMI issue The USB3 0 transfer maybe gets effect by the EMI in the transfer patch Like the static and other high power device emitted The EMI will cause the transfer data packet to get a CRC error and cause the...

Page 3: ...k Current 20C 0 0005e pixel sec 10C 0 001e pixel sec Exposure Time Range 30us 3600sec Unity Gain 0 PH Mode 30 Extended Fullwell Mode With the improvement of the CMOS technology the 16bit CMOS camera has been released like QHY600 268 411 461 For these cameras even in lowest gain it has beyond the requirement of unit gain less than 1e ADU due to sufficient samples So you can directly set gain0 as st...

Page 4: ...rformance The QHY268 currently has four readout modes and more modes will be added in the future These readout modes are currently supported in the QHY ASCOM Camera Driver SharpCAP software and the N I N A software Readout Mode 0 Photographic Mode In this mode there is a drop in the noise between Gain 25 and Gain 26 We recommend setting the Gain to 26 to begin At this setting the full well is 27ke...

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Page 6: ...datasheet In the datasheet it is the normalized curve QHYCCD test it by comparing with an known QE CCD sensor And get this curve This curve is only a reference QHYCCD does not guarantee this curve is correct Color version Normalized Response Curve from SONY datasheet ...

Page 7: ...rsion may not be compatible with those yet and has some of the latest optimized but experimental features The stable version is older than the beta version but more stable so it is recommended for beginners who are not using the latest products Don t let the camera connect to the computer during the All in one pack installation process connect it to the computer after all the installation is compl...

Page 8: ...ature to 10C The temperature of the CMOS sensor will drop quickly to this temperature approximately 2 3 minutes If you want to turn off cooling you can choose Stop If you just want to set the TEC power but not the temperature You can select Manual and then set the percentage of the TEC power You can use the preview tab to preview and use the focus tool to focus Then use the capture tab to capture ...

Page 9: ... temperature control circuit will be activated You can control the CMOS temperature by adjusting the settings in the figure below Basically you can control the temperature of CMOS by either adjusting Cooler Power or clicking Auto and setting Target Temperature You can also see the CMOS temperature at the lower left corner of the software window ASCOM supported software e g MDL With ASCOM drivers y...

Page 10: ...N I N A Open N I N A Nighttime Imaging N Astronomy Drive connections via ASCOM ...

Page 11: ...ideo broadcast function which can meet the needs of customers to send video images to other target software For example use sharpcap to connect a WDM enabled camera and the sharpcap display video image can be sent to other WDM supported software for display which is suitable for video online broadcast applications Installation Perform the AllInOne installation and check the BroadCast WDM Camera op...

Page 12: ...k that the image device name is QHYCCD BroadCast WDM Camera which means the installation is successful Activate the function Usually sharpcap is used to connect the camera as the broadcasting terminal After connecting the camera you need to turn on the Enable Live Broadcast switch to broadcast ...

Page 13: ...Common supporting software ie broadcast receiver includes UFOCAPTURE HANDYAVI QQ video functions etc AMcap test effect chart HANDYAVI test effect chart UFOCAPTURE test renderings ...

Page 14: ...16 bits for the time being RGB24 mode must be selected for color images otherwise the image will appear gridded Advanced Control Tools Click to download 2021 1 2 Debug TOOL Release TOOL Run Sharpcap and make sure the QHY Camera works well under it You will see the continous image appears ...

Page 15: ...tton and it will show camera name and series number select QHY Camera tabl check on the Enable TrigOut Input 2 to the textbox near to the GPIO PORT MODE Then click the GPIO PORT MODE Button to set the GPIO working mode ...

Page 16: ... QHYCCD GPSBOX The camera will output the shuttermeassure signal to GPSBOX and GPSBOX will send the data to camera Camera will replace the first some pixel to the gps data MODE2 5PIN Generic TrigOut TrigIn mode In this mode Four GPIO port is configed as TrigOut ShutterMeassure TrigIn LinePeriod Only TrigIn pin is input direction and other three pin is output direction In some camera like QHY4040 Q...

Page 17: ...rol ShutterMessure ShutterMessure n a n a ShutterMessure GPIO2 GPSBOX_Data IN TrigIn2 ShutterMessure n a n a TrigIn2 GPIO3 GPSBOX_ShutterMessure LinePeriod n a HSYNC OUT HSYNC IN LinePeriod GPIO4 GPSBOX_CLK TrigOut n a VSYNC OUT VSYNC IN LED OUTPUT GND GND GND GND GND GND GND Maintenance CMOS Maintenance Drying the camera CMOS chamber The CMOS sensor is located in the CMOS chamber There is a hole ...

Page 18: ...ly you should also gradually reduce the power of the TEC and then disconnect the power supply Appendix UVLO Function Note Now only QHY600 QHY268 QHY410 QHY411 QHY461 QHY533 cameras have UVLO function What is UVLO UVLO Under Voltage Locking is primarily intended to protect the electronic device from damage caused by abnormally low voltages Our daily life experience tells us that the actual operatio...

Page 19: ...LO event occurs the camera will automatically memorize it and will work in a protected mode at a maximum of 70 power after reconnection This memory can be erased as follows After you find the system error you need to turn off the device and check the power supply After inspecting the problem open the ezcap software and select Camera Settings Preferences Reset Flash Code to reset the error status W...

Page 20: ...ous mode This function can only be used in continuous mode When this function is enabled the camera will stop outputting image data and the software frame rate will be reduced to 0 At this time send relevant commands to the camera and the camera will Output the image data with the specified frame number according to the settings for example set Start End to 1 6 the camera will output the image dat...

Page 21: ...2 SetQHYCCDBurstModeStartEnd 3 SetQHYCCDBurstIDLE ...

Page 22: ...4 ReleaseQHYCCDBurstIDLE 5 SetQHYCCDBurstModePatchNumber 6 ReseQHYCCDtFrameCounter ...

Page 23: ...7 SetQHYCCDEnableLiveModeAntiRBI 8 EnableQHYCCDImageOSD Sample Code ...

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