Acquire the Sign
al
2. Push Bit R ate,
and turn multipurpose knob a
to select the appropriate bit r ate.
Bit Rate
9600 bps
3. Push Data Bits
and select the number to
match the bus.
Data Bits
7|
8
4. Push Parity a
nd turn multipurpose knob a to
match the polarity used by the bus as None,
Odd, or Even.
Parity
(a) None
5. Push Packets and select On or Off.
Packets
On|
Off
6. Turn multip
urpose knob a to s elect an
end-of-packet character.
End of
Packet
0A
(Linefeed)
RS-232 decoding displays a stream of bytes.
You can organize the stream into packets
with an end
-of-packet character.
If you defin
ed an end-of-packet character
to use for RS-232 decoding, the stream of
bytes will be displayed as packets.
When decoding an RS -232 bus in ASCII
mode, a l
arge dot indicates that the value
represents a character outside the printable
ASCII range.
CAN Bus
To acquire data from a CAN bus, you need to also set up these items:
1. If you selected CAN, push Define Inputs
and the appropriate side menu choices.
Bus B1
CAN
Define
Inputs
Thresholds Bit Rate
500 Kbps
B1 Label
CAN
Bus
Display
Event
Table
MSO4000B and DP O4000B Series Oscilloscopes User Manual 67