Individual tests
5.3 Line
length
The CANcheck determines the line length with the aid of the nominal specific
signal delay on the cable (5.6 ns/m). Stub lines in the CAN network may falsify
the test result.
For the test of the line length, please remove the two termination resistors of
your CAN network. These are normally located on the line ends. Connect the
CANcheck in the place of a termination resistor. The other end remains open.
Please switch the CAN network off before the test. In addition, you should dis-
connect all CAN nodes from the network. Switched off CAN nodes with a high
resistance between CAN_H, CAN_L and ground can remain connected. As the
resistors of all connected CAN nodes are parallel, however, the resistance of every
individual CAN node must then be greater than the "number of CAN nodes" x 1
k
Ω
.
Please select the menu item "Line length" with the keys UP and DOWN and press
the OK key.
Individual tests
▼
-Wiring test
-Term. resistors
-Line length
-Line impedance
-Power supply
-Baudrate detection
When the CAN network is switched off, the test instructions appear. Error mes-
sages are explained in section 6. When you have followed the test instructions,
please start the test with the OK key.
During the measurement a message appears. After the measurement the test re-
sult appears.
Line length
-Disconnect all nodes
-Remove termination R
on both ends
OK Start test
Copyright IXXAT Automation GmbH
CANcheck Manual, Version 1.2
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