Grass Valley 8960ENC v.8.1.0 - Manual (Page 47)

8960ENC—Instruction Manual 47
Functional Description
Microcontroller
At power up, the microcontroller configures the encoder chip and loads the
firmware according to the last stored user settings. The user adjustable
parameters are input through a multifunction rotary and toggle switch
combination interface with a preset option of the factory recall settings. All
the functions are remote read/writable through the intraframe control
interface (available in 8900TX/TF/TFN frames). The Fault Reporting
output is pulsed in case of loss of input signal.
Regulator
The input +12 V is stepped down to +5 V and -5 V using an on-board
switched mode drop (buck) regulator. The regulator does not start up until
the main supply voltage reaches approximately 80% of its nominal value.