MAINTENANCE AND OPERATION MANUAL
NOVA-65 SC/0111258-00
Tideland Signal
Page
4 of 32
0111258-00
Rev. B 16-Jun-16
Figure 3 Block Diagram.
Figure 3 Block Diagram
Input Power Filter
Battery power is supplied to the control circuit through the Input Power Filter.
The Input Power Filter protects against input power transients, provides reverse
polarity protection and includes circuitry to arrest induced lighting surges.
Main Microcontroller
The main control unit, U1, a microcontroller, controls high-level functions of the
MaxiHalo II controller. It generates the flash code, requests and receives sync
communications, receives inputs from the sunswitch (photocell) and
configuration information from switches S1, S2, S3, S4, and S5.
Sunswitch
The sunswitch monitors ambient light level and produces an output signal to be
measured by the MaxiHalo II controller. Day and night threshold levels can be
set using SignalView. To avoid false activation, the system is designed to
require the crossing of two light levels to switch to either day or night operating
modes. See Figure 4 Sunswitch Diagram.
