Daktronics AF-3165-34-RGB - Manual (Page 54)

RS422 Surge Board Assembly
Reference Drawings:
Detail,
AF-3165-8/16x**-Pwr/Control Corner............... Drawing A-186055
Detail, AF-3165-24/32/40/48x**-Pwr/Control Corner .. Drawing A-186056
If a surge board was included with your display, it is
located inside the display next to the controller board.
Refer to Drawing A-186055 or A-186056 for the
location.
Figure 41: RS422 Surge Suppressor
1. To replace the surge board, first disconnect the
signal connections (Refer to Figure 41 at right)
2. The surge suppressor is held in place with four
screws. Carefully remove them with a 3/16” nut
driver
3. Install the new surge suppressor; replace the
screws and the signal cables
The surge suppressor is an inline device that is used to
filter the RS422 data line. It suppresses surges down to a
low voltage in order to protect the display controller’s
RS422 input. The surge suppressor must be firmly
connected to the display chassis in order to be effective.
The mounting hardware used to secure the surge
suppressor is sufficient if it is fastened properly.
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 42: 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 or primary display in the network.
Maintenance and Troubleshooting 4-12