Acquire the Sign
al
1. If you selected Ethernet, push Define
Inputs and the desired side menu choices.
Bus (B1)
Ethernet
Define
Inputs
100B-
ASE-TX
Thresholds IPv4
Yes|No
(B1) Label
Ethernet
Bus
Display
Event
Table
2. The Thresholds, B us Display, and Event
Table menus operate similarly to the other
serial buses
.
3. Push IPv4 to decide whether or not to
decode and trigger on Internet Protocol
version4si
gnals.
MIL-STD 15
53
To acquire data from a MIL-STD 1553 bus, you
need to also set up these items:
Bus B1
MIL – 1553
Define
Inputs
Threshol
ds
800 mV
0.00 V
RT
12.0μS
4.00μS
B1 Label
1553
Bus
Display
Event
Table
1. Push Define Inputs and use multipurpose
knob a to select the desired side menu
choices
. Select the polarity desired to match
the MIL-STD-1553 bus being acquired.
2. The Thresholds, Label, Bus Display, and
Event Ta
ble menu items operate similarly to
how they work on other serial bus menus.
3. Push RT
if you wish to change the R esponse
Time (RT) maximum and minimum default
values.
Physical Layer Bus Activity
Oscilloscope waveform traces from analog channels 1 to 4, digital channels D15 to D0, Math waveforms, and the traces you
see when you choose to display a bus always show the physical layer bus activity. In the physical layer display, bits that were
transmitted earlier are to the left, and bits that were transmitted later are to the right.
I2C, and CAN buses transmit the MSB (most significant bit) first
SPI buses do not specify a bit order
RS-232 and LIN buses transmit the LSB (least significant bit) first
NOTE. The oscilloscope displays the decode traces and event tables for all buses with the MSB on the left and LSB
on the right.
MSO4000B and DP O4000B Series Oscilloscopes User Manual 71
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