Metrix OX9302-BUS, User Manual

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Appendix - "Bus analysis" mode
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12.5.3. Measurements (DALI)
Diagnosis Use this table to troubleshoot problems on a measurement :
Measurement Description Diagnosis
VHigh
Measurement of the signal high level

Termination problem

Cable length not compliant with standard

Chassis-ground disturbance problem

Significant noise (check the cable route, ground
braid not connected, faulty chassis-ground, etc.)

…
VLow Measurement of the signal low level
TRise
Rise time between 10% and 90% of
the signal amplitude

Cable length not compliant with standard

Unsuitable or damaged cable (the rise and fall
times increase with the cable impedance)

…
TFall
Fall time between 90% and 10% of
the signal amplitude
Time Data
Measurement made using the bit time
total

Cable length not compliant with standard

Unsuitable or damaged cable

Significant noise (check the cable route, ground
braid not connected, faulty chassis-ground, etc.)

…