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SDS5000XSeries Digital Oscilloscope Service Manual
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Figure 34
Test points for clock
Table 20
Clock parameters of the Processor System
Test Point Clock Domain
Level
Frequency Tolerance
R65
Processor Reference
LVCMOS33
33.333333 MHz
±
50PPM
R66
USB Host Reference
LVCMOS33
24.000000 MHz
±
50PPM
R67
USB Device Reference
LVCMOS33
24.000000 MHz
±
50PPM
R68
Ethernet Reference
LVCMOS33
25.000000 MHz
±
50PPM
R69
ProgrammableLogic
Reference
LVCMOS33
25.000000 MHz
±
25PPM
8.7
To Check the LCD
Reconnect the power cable to the acquisition board after you have
confirmed that the power supply module is in good condition.