Daktronics Galaxy AF-3155, Руководство пользователя

Страница: 54 / 87

Location of CAN termination Jumper
Temperature and light sensors are controlled as part of a CAN network. For the CAN
network to work correctly, the network must be terminated at both ends of the
network. This is true for a single display, or for multiple displays. The correct
terminations are completed during the building process. However, if the order or
number of displays is changed on-site, the terminating jumper may need to be
relocated.
W1 is the necessary location of the terminations.
Figure 43: Displays with No External Temperature Sensor
In the case of those displays that utilize a temperature sensor, the sensor is internally
terminated. Therefore, only one other termination needs to be made at the output of
the last sign in the network. The most common input location for the temperature
sensor is to the first display in the network.
Figure 44: Displays with External Temperature Sensor
The terminating jumper (W1) is located on the quick connect board on the inside of
the display. Most displays have both an input and an output quick connect board.
When no output board is available, the terminating jumper (W1) will be placed on
the input board of the last display. Therefore, both boards are shown in
Figure 43
and
Figure 44
above.
Maintenance and Troubleshooting
4-12