ICS ELECTRONICS 4863 Manual page 117

a gross system failure. Any self test error is displayed by blinking the front
panel LED(s).
GPIB
4
12-24 VDC
The Flash memory also contains all of the 4863's configuration settings,
serial number and other parameters that are subject to change. At power on
time, the microprocessor copies the configuration from Flash memory to
RAM memory where it is used to operate the unit. Any changes to the
configuration settings are not stored in the Flash memory until the user sends
the *SAV command.
µP BUS
GPIB
CTLR
RAM
EEPROM
EPROM
Microprocessor
Power
+5V
Supply
FIGURE 4-1 4863 BLOCK DIAGRAM
Latch
Latch
Latch
Latch
Address
DCDR
4-2
Digital
Inputs
and
Outputs