To Use The Digital Bus - Rigol 2000 Series User Manual

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To Use the Digital Bus

Users can display the three groups of channels (D7-D0, D15-D8 and D15-D0) as
digital buses according to their needs. Each bus value will be displayed at the bottom
of the screen in data or graph form. MSO2000A/DS2000A allows users to create up
to 2 buses.
Press LA  Bus to enter the digital bus setting menu.
Press Bus to select "BUS1" or "BUS2".

Press BusStatus to turn on or off the digital bus.

Press Sel CH to set the corresponding channels of BUS1 or BUS2 to D7-D0,

D15-D8 or D15-D0.
Press Endian to set the bus endian to "Normal (D0 locates at the least

significant bit)" or "Invert (D0 locates at the most significant bit)" and the
default is "Normal".
Press RefClock to select any channel of D0-D15 or CH1-CH2 as the reference

clock of the bus. Selecting "None" means no reference clock will be used.
When CH1 or CH2 is selected to be the reference clock, you can press
Threshold and rotate the multifunction knob
clock channel, the range is from (-4*vertical scale - vertical position) to
(4*vertical scale - vertical position). Pressing down
threshold level of the clock channel to 0 V. When any channel of D0-D15 is
selected to be the reference clock, Threshold will be hidden automatically and
the threshold cannot be set.
Press Slope to set the sample edge type of the reference clock to

edge) or
Press Type to set the display mode of the digital bus to "Data" or "Graph". In

data mode, the bus data is displayed; in graph mode, the oscilloscope displays
the level of the corresponding value of the bus data for easier observation of the
variation tendency of the bus values.
Press Format to set the display format of the digital bus to Hex, Decimal, Binary

or ASCII.
Press Jitter Reject to turn on the jitter rejection function. Jitter refers to the

short-term deviation of the signal relative to its ideal time position at certain
time point, as shown as T1 and T2 in Figure 7-1. When no reference clock is
selected for the bus, the jump status of each channel would cause the variation
7-6
(falling edge).
Chapter 7 Digital Channel
to set the threshold of the
can quickly reset the
MSO2000A/DS2000A User Guide
(rising