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P
AGE
4
46062-0299 <90-00016>
Front Panel Reset Switch
The front panel of the module has a recessed momentary
push-button switch that is used to provide a hardware reset. If
the button is pressed momentarily, the module restarts opera-
tion and reloads the default operating parameters established by
the DIP switches.
Front Panel LEDs
There are three green LEDs located on the front panel of the
module that show if the ports are transmitting data.
There is one red LED in the front panel to indicate low voltage
of the on-board battery.
Power Supply
An on-board regulated power supply uses -21 to -56 VDC input
power to provide regulated DC voltages to operate the module’s
circuitry.
F
IG
. 1 - F
UNCTIONAL
S
CHEMATIC
, 46062 G
ENERAL
P
URPOSE
P
ROCESSOR
CONFIGURATION
DIP SWITCHES
CPU 68000
EPROM
UART
PRINTER PORT
RESET SWITCH
CIRCUIT
REAL TIME
CLOCK
4 STATUS
INDICATING LEDS
MOTHER BOARD
PARALLEL
I/0
INTERFACE
WATCHDOG
TIMER
LOGIC AND
MEMORY BOARD
BATTERY
BACK-UP,
STATIC RAM
AND
WRITE
PROTECTION
CIRCUIT
FLASH
MEMORY
CPU AND
MEMORY
DUSART
DATA PORT
MASTER PORT
CIRCUIT DESCRIPTION