Help with oscilloscope DSO1062B.
Hello
The problem with the device began with the writing of measurements to an usb drive with format (NTFS). It should be FAT32 which has damaged the software the device started up and restarted. I accidentally formatted the memory and had to re-set the system. With the help of a hantek.com redirector sent me a download instruction and a new soft by JTAG. The device starts up however...
The device turns on, the ohmmeter multimeter etc are working properly.
The problem is with the oscilloscope.
symptoms:
No zero line, in the DC and AC range, the line appears in the GND range.
Only the upper part of the signal waveform can be seen, the displayed signal is shifted.
The signal can only be seen in the range up to 5V. Above 5V does not display the waveform.
For both cannons the same symptoms.
Do not pass Self calibration.
Could this be a software corruption?
Hot to AD9288. After soldering resistors for LMH6552 (RA01, RA02) AD9288 does not heat up. And there is a no signal line on the screen.
Voltage on systems tested.
DAC OUT (DAC8551) -> VPP 0.800V is ok?
With disconnected probes:
OFFSET1 -> -1.2V
OFFSET2 -> 2.5V (Tp502)
OFFSET3 -> 1,6V
Is it ok?
Tp501 -> 4,096V is ok.
For OP2-C TLV274C -> 2,5V.
After replacing the resistor and setting offset1 to 2.5V there was a zero line.
Please advice as if I could fix my oscilloscope.
The attachment adds a file that I found on the network and on which I base the measurements.
https://youtu.be/5JRmlAXg5VM
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