R&S RTO6, Руководство пользователя

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Protocol analysis
R&S
®
RTO6
553 User Manual 1801.6687.02 ─ 05
Remote command:
BUS<m>:CMSB:NRZ:ENAPolarity
on page 1759
Set Thresholds
Sets the threshold value for the digitization of each signal line and the hysteresis. If the
signal voltage on the line is higher than the upper threshold, the signal state is high.
Otherwise, if the signal voltage is below the lower threshold, the signal state is consid-
ered low.
●
Manchester coding standards use 3-state signals with an upper and a lower volt-
age threshold in the range of -25
V to +25 V. A low-to-high transition requires the
signal to exceed the upper threshold; a high-to-low transition requires the signal to
fall below the lower threshold.
You can set a hysteresis only for the enable signal.
●
NRZ coding standards use a single voltage threshold for the data line. The value is
in the range of -25
V to +25 V. It is entered into the middle of three available thresh-
old input fields, or into the upper available threshold input field for NRZ Unclocked.
You can set the hysteresis for all signal lines.
●
In the NRZ Clocked coding standard, there is an additional clock voltage threshold
available. This value in the range of -25
V to +25 V is entered into the upper
threshold input field.
You can set the hysteresis for the clock line.
There are four ways to set the threshold:
Custom: Manchester / NRZ (option R&S RTO6-K510)