R&S RTO6, Руководство пользователя

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Protocol analysis
R&S
®
RTO6
554 User Manual 1801.6687.02 ─ 05
"Threshold" Directly sets the threshold values.
●
For Manchester: upper threshold in the upper field, lower thresh-
old in the lower field.
●
For NRZ Clocked: clock threshold in the upper field, data thresh-
old in the middle field and enable threshold in the lower field. Hys-
teresis values are in the right column.
●
For NRZ Unclocked: data threshold in the upper field and enable
threshold in the lower field. Hysteresis values are in the right col-
umn.
Remote command:
BUS<m>:CMSB:MANChester:THReshold:HIGH
on page 1754
BUS<m>:CMSB:MANChester:THReshold:LOW
on page 1754
BUS<m>:CMSB:NRZ:THReshold:CLCK
on page 1759
BUS<m>:CMSB:NRZ:THReshold:DATA
on page 1760
BUS<m>:CMSB:NRZ:THReshold:ENBLe
on page 1760
BUS<m>:CMSB:NRZ:HYSTeresis:CLCK
on page 1759
BUS<m>:CMSB:NRZ:HYSTeresis:DATA
on page 1760
BUS<m>:CMSB:NRZ:HYSTeresis:ENBLe
on page 1760
"Find thresh-
olds" Executes the measurement of reference levels and sets the thresh-
olds to the middle reference level of the measured amplitude.
Remote command:
BUS<m>:SETReflevels
on page 1671
"Couple
thresholds"
●
For Manchester and Manchester II coding, the upper and lower
thresholds are coupled to voltage values with the same magni-
tude but opposite sign (positive for the upper threshold and nega-
tive for the lower threshold). However, if the upper threshold is set
to a negative voltage or the lower threshold is set to a positive
voltage, coupling is disabled, and the other voltage (the one that
was not actively set) is automatically adjusted, to avoid an upper
threshold below the lower one, or a lower threshold above the
upper one.
●
For NRZ Clocked coding, the clock and data threshold values are
coupled to the same voltage.
Remote command:
BUS<m>:CMSB:MANChester:THReshold:COUPling
on page 1755
BUS<m>:CMSB:NRZ:THReshold:COUPling
on page 1761
13.6.2.2 Advanced
Access: [Bus] > "Advanced" tab.
Custom: Manchester / NRZ (option R&S RTO6-K510)