Hi David,
We are captured the voltage across R133 when board gets shut-off.
Before board get shut-off, the voltage across R133 = 0.920V
Please find the capture of oscilloscope when trigger level set to
1.16V.
The scope capture, yellow shows before R133 and blue shows after
R133.
Why are we getting voltage drop?
Thanks
& Regards
L M Chandra shekara
GL Communications India Private Ltd
#1, Ground Floor, Uma Admiralty
Bannerghatta Road
Bangalore - 560029
Voice : +91-080-40488415
E-Mail :chandrashekara@gl.com
http://www.gl.com
IP Phone : 301 670 4784 x360
L M Chandra shekara
GL Communications India Private Ltd
#1, Ground Floor, Uma Admiralty
Bannerghatta Road
Bangalore - 560029
Voice : +91-080-40488415
E-Mail :chandrashekara@gl.com
http://www.gl.com
IP Phone : 301 670 4784 x360
Hi David,
Please find the schematics below
We are measured the voltages across.
1. Voltage threshold setting coming to U21 Pin 3 is 1.163V(This is measured
on multi-meter)
2. The voltage across TP2(which is output from temperature sensor U14 pin
1) captured through oscilloscope.
In oscilloscope we set the trigger level to 1.16V
and started trigger. Before board goes to shut-down, we can see the
trigger.
The following oscilloscope capture figure will
depicts the same.
We are captured the voltage across R133 when board gets shut-off.
Before board get shut-off, the voltage across R133 = 0.920V
Thanks
& Regards
L M Chandra shekara
GL Communications India Private Ltd
#1, Ground Floor, Uma Admiralty
Bannerghatta Road
Bangalore - 560029
Voice : +91-080-40488415
E-Mail :chandrashekara@gl.com
http://www.gl.com
IP Phone : 301 670 4784 x360
L M Chandra shekara
GL Communications India Private Ltd
#1, Ground Floor, Uma Admiralty
Bannerghatta Road
Bangalore - 560029
Voice : +91-080-40488415
E-Mail :chandrashekara@gl.com
http://www.gl.com
IP Phone : 301 670 4784 x360
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