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标题: T56使用HDMI测试视频信号失败 [打印本页]

作者: Test 时间: 2021-8-22 15:11 标题: T56使用HDMI测试视频信号失败

VGA模式下测试通过HDMI下使用了3台不同的显示器均测试失败显示器提示无信号，我有5个适配座所以可以排除适配座的问题
1台是7寸显示器屏幕分辨率1024*600
1台55寸TCL电视最大分辨率4K
1台65寸创维电视最大分辨率4K 已经将电脑的HDMI 2.0和HDMI 1.4模式都测试了均无信号
可以通过HDMI来读取到显示设备的信号，以下是HDMI1.4 最大2K模式下读取到的显示器信息，请管理员帮助判断问题在哪
************************************************************** APP Version : 11.20 Model : T56 Device : EN25T80 ************************************************************** 读取设备的信息 (EDID) on Port: HDMI EDID信息长度 : 256 Bytes Monitor Descriptor and Vendor information NAME: Skyworth TV Manufacturer Name: SKY Product Code: 0001 Serial Number: 01010101 Week of Manufacture: 7 Year of Manufacture: 2018 EDID Structure Version : 1.3 Basic Display Parameters and Features Video Input Signal Type: Digital Interface signal compatible with VESA DFP 1.X: Compatible Max Horz Size (in cm): 0 Max Vert Size (in cm): 0 Gamma Value: 2.20 Feature Support (DPMS) Standby Mode: Not Supported Suspend Mode: Not Supported Active Off Mode: Not Supported Display Type: RGB color display Color Space: Alternate Preferred Timing: 1st DTD GTF Timing: Not Supported Color Characteristic Red_x: 0.639 Red_y: 0.330 Green_x: 0.299 Green_y: 0.599 Blue_x: 0.150 Blue_y: 0.059 White_x: 0.280 White_y: 0.290 Established Timings Established Timings I 720 x 400 @ 70Hz IBM, VGA 640 x 480 @ 60Hz IBM, VGA 800 x 600 @ 60Hz VESA Established Timings II 1024 x 768 @ 60Hz VESA Manufacturer's Timings None Standard Timings Standard Timing 1 Horizontal active pixels: 1280 Image Aspect ratio: 4:3 Refresh Rate: 60 Hz Standard Timing 2 Horizontal active pixels: 1280 Image Aspect ratio: 16:9 Refresh Rate: 60 Hz Standard Timing 3 Horizontal active pixels: 1360 Image Aspect ratio: 16:9 Refresh Rate: 60 Hz Standard Timing 4 Horizontal active pixels: 1920 Image Aspect ratio: 16:9 Refresh Rate: 60 Hz Standard Timing 5 Horizontal active pixels: 800 Image Aspect ratio: 4:3 Refresh Rate: 60 Hz Standard Timing 6 Unused Standard Timing 7 Unused Standard Timing 8 Unused Block0 Detailed Timing Descriptor 1 DTD support timing: 1920x1080p@60 Mode "1920x1080" # vfreq 60.000Hz, hfreq 67.500kHz DotClock 148.500000 HTimings 1920 88 44 2200 VTimings 1080 4 5 1125 Sync Profile "+HSync" "+VSync" Block0 Detailed Timing Descriptor 2 DTD support timing: 1280x720p@60 Mode "1280x720" # vfreq 60.000Hz, hfreq 45.000kHz DotClock 74.250000 HTimings 1280 110 40 1650 VTimings 720 5 5 750 Sync Profile "+HSync" "+VSync" Block0 Detailed Timing Descriptor 3 Monitor name: Skyworth TV Block0 Detailed Timing Descriptor 4 Min. Vertical rate (Hz): 48 Max. Vertical rate (Hz): 76 Min. Horizontal rate (KHz): 15 Max. Horizontal rate (KHz): 85 Max. Supported Pixel Clock rate (KHz): 300 Default GTF supported Extension Flag: 1 EDID Block0 checksum: C2 Video Data Block 1920x1080i@60 1280x720p@60 720x480p@60 16:9 640x480p@60 720x576p@50 16:9 1280x720p@50 1920x1080i@50 720x576i@50 16:9 720x480i@60 16:9 1920x1080p@60 1920x1080p@50 Audio Data Block SAD1 support audio format: PCM, max channels: 2 SAD1 support sample rate: 32K 44.1K 48K SAD1 byte3: 0x07 SAD2 support audio format: AC3, max channels: 6 SAD2 support sample rate: 32K 44.1K 48K SAD2 byte3: 0x50 SAD3 support audio format: DOLBY, max channels: 6 SAD3 support sample rate: 32K 44.1K 48K SAD3 byte3: 0x01 SAD4 support audio format: DTS, max channels: 6 SAD4 support sample rate: 32K 44.1K 48K SAD4 byte3: 0x50 SAD5 support audio format: DTS_HD, max channels: 8 SAD5 support sample rate: 44.1K 48K 88.2K 96K 176.4K 192K SAD5 byte3: 0x01 SAD6 support audio format: MAT, max channels: 8 SAD6 support sample rate: 32K 44.1K 48K 88.2K 96K 176.4K 192K SAD6 byte3: 0x01 Speaker Allocation Data Block speaker info: 0x01 H14b VSDB CEC phyaddr: 0x10 0x00 support max tmds clock: 225MHz Block1 Detailed Timing Descriptor 1 DTD support timing: 720x480p@60 4:3 Mode "720x480" # vfreq 59.940Hz, hfreq 31.469kHz DotClock 27.000000 HTimings 720 16 62 858 VTimings 480 9 6 525 Sync Profile "-HSync" "-VSync" Block1 Detailed Timing Descriptor 2 DTD support timing: 720x480i@60 4:3 Mode "1440x240" # vfreq 60.054Hz, hfreq 15.734kHz DotClock 27.000000 HTimings 1440 38 124 1716 VTimings 240 4 3 262 Sync Profile "Interlace" "-HSync" "-VSync" Block1 Detailed Timing Descriptor 3 DTD support timing: 1280x720p@50 Mode "1280x720" # vfreq 50.000Hz, hfreq 37.500kHz DotClock 74.250000 HTimings 1280 184 40 1980 VTimings 720 5 5 750 Sync Profile "+HSync" "+VSync" Block1 Detailed Timing Descriptor 4 DTD support timing: 1920x1080i@50 Mode "1920x540" # vfreq 50.044Hz, hfreq 28.125kHz DotClock 74.250000 HTimings 1920 48 44 2640 VTimings 540 2 5 562 Sync Profile "Interlace" "+HSync" "+VSync" Total support 16 timings: 640x480p@60 800x600p@60 1024x768p@60 1280x960p@60 1280x720p@60 1920x1080p@60 1920x1080i@60 720x480p@60 16:9 720x576p@50 16:9 1280x720p@50 1920x1080i@50 720x576i@50 16:9 720x480i@60 16:9 1920x1080p@50 720x480p@60 4:3 720x480i@60 4:3

作者: Test 时间: 2021-8-22 15:35

保存出来的显示器信息文本排班有些乱如果软件保存的时候可以用0D 0A 换行标志进行分割拼接下就好了

作者: admin 时间: 2021-8-22 15:35

回复 1# Test
这个都试过的，软件不会有问题的
1.适配座的电阻不要焊错！
2.测试分辩率及信号，要选择HDMI:1280x720
3.用优质的HDMI线

作者: admin 时间: 2021-8-22 15:41

保存出来的显示器信息文本排班有些乱如果软件保存的时候可以用0D 0A 换行标志进行分割拼接下就好了
Test 发表于 2021-8-22 15:35

都加了的，这是DZ论坛软件的问题

作者: Test 时间: 2021-8-22 16:59

回复 Test
这个都试过的，软件不会有问题的
1.适配座的电阻不要焊错！
2.测试分辩率及信号，要选择HDM ...
admin 发表于 2021-8-22 15:35

电阻123使用240欧，其余电阻使用120欧，

我这里有近百根19芯HDMI 数据线，数据线在机顶盒上可以正常使用，

明日工作时我将录像记录下测量适配座上的所有电阻以及hdmi信号测试的全过程。希望可以帮助排查问题

作者: Test 时间: 2021-8-23 11:03

回复 Test
这个都试过的，软件不会有问题的
1.适配座的电阻不要焊错！
2.测试分辩率及信号，要选择HDM ...
admin 发表于 2021-8-22 15:35

经过检查你说的对确实是电阻有问题，看来淘宝购买的电阻并不可靠，R2的240欧电阻经过万用表实际测量为通路状态更换一颗240欧电阻后视频信号输出没有问题

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