Daktronics AF-3150-20-R,A - Manual (Page 40)

4.2 Signal Summary
The signal routing for the display can be summarized as follows:
1. Data from the control computer, which runs Venus
® 1500 software, travels
via RS232, RS422, modem, fiber optic cable, or radio signal to the display.
2. For multiple face displays or a display network, an RS422 quick connect
cable (most typical) relays signal between the controller of the primary
display and the controller in the secondary display. In the case of fiber, two
fibers would connect from the fiberboard in the primary display to the
fiberboard in the secondary display.
3. From the controller, the signal then travels over one or more 20-conductor
ribbon cables (J11 through J18 provide signal out) to J2 on the first row of
modules in the display.
4. Data exits at J1 and is relayed to J2 of the next module and so on, traveling
down the entire row of modules. The modules use this display data to
control the LEDs.
Figure 35: Power/Control Corner
4.3 Power Summary
Reference Drawings:
Schematics ...............................................................Refer to Appendix A
The power routing for the display can be summarized as follows:
1. Incoming power terminates at the power termination enclosure. Before
leaving the enclosure, power is sent through a circuit breaker and an RFI
electrical filter. See display Schematic for details.
2. Power for the controller board passes through a transformer located in the
power termination box.
Maintenance and Troubleshooting 4-2