User Manual

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 Decoded text is truncated at the end of the associated frame when there is insufficient space
within frame boundaries.
 Blue vertical bars indicate the need to expand the horizontal scale (and run again) to see
decode.
 When the horizontal scale setting does not permit the display of all available decoded data,
red dots will appear in the decoded bus to mark the location of hidden data. Expand the
horizontal scale to allow the data to display.
 An unknown (undefined) bus is shown in red.
Interpreting UART/RS232 Lister Data
In addition to the standard Time column, the UART/RS232 Lister contains these columns:
 RX: Receive data.
 TX: Transmit data.
 RX err: Parity error or unknown error when receiving data.
 TX err: Parity error or unknown error when transmit data.
15.4 CAN Serial Decode
The following order of operations should be followed to ensure that the trigger and decode
functions are set correctly:
• Setup for CAN Signals
• CAN Decode
Setup for CAN Signals
The setup consists of connecting the oscilloscope to a CAN signal and using the SIGNAL menu to
specify the signal source, threshold voltage level, baud rate, and sample point.
To set up the oscilloscope to capture CAN signals:
1. Press the Decode button to enter the DECODE menu.
2. Press the Decode softkey and select the desired slot (Decode 1 or Decode 2).
3. Press the Protocol softkey and select CAN by turning the Universal Knob. Push the Universal
Knob to confirm the selection.
4. Press the Signal softkey to enter the CAN SIGNAL menu.
Figure 119 - CAN SIGNAL menu
5. Press the CAN-H or CAN-L softkeys and select the channel for the CAN signal.
6. Press the Threshold softkey and turn the Universal Knob to select the CAN signal threshold
voltage level. The threshold voltage level is used in decoding and it will become the trigger
level when the trigger type is set to the selected serial decode slot.