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CT 9000 ® ADV
MAIN POWERHEAD BOARD
3-38
The main powerhead board consists of the following major compo-
nenis, each of which will be discussed in greater detail in the fol-
lowing sections:
Microcontroller
Heater blanket controller
RS-422 interface
Keyboard and sensor interface
Power Supplies
Knob Encoder interface
Lamp interface
Motor interface
Status LEDs
The Power Pack provides a female DB-25 connector which con-
nects to the male end of the powerhead cable.
Table 3-11 contains
the connector pinout and signal description for the DB-25 connec-
tor. The female end of the cable connects to a male DB-25 con-
nector located on the powerhead circuit board.
800961-C
Nov. 2000
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