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Operating Basics
2–4
VX1410A & VX1420A IntelliFrame Mainframe Instruction Manual
MONITOR BACKUP
POWER SUPPLY
LOGICAL ADDRESS switches
READY light
ACCESSED light
RS-232C connector
Figure 2–4: Rear view of the Enhanced Monitor
The Logical Address switches are available with the Enhanced Monitor; these
switches select the logical addresses for the Enhanced Monitor. The top switch
sets the most-significant digit, and the bottom switch sets the least-significant
digit.
The green READY indicator lights after the power-on diagnostics are complete
and there are no failures. During normal operation, the light flashes if there is a
pending error message. Once all error messages have been retrieved, the READY
indicator stops flashing and remains on.
The amber ACCESSED indicator lights when the MODID line is accessed by
the slot 0 device. Refer to Enhanced Monitor Board Jumpers on page B–4 for
information on the jumper MODID jumper positions.
An auxiliary power connector (MONITOR BACKUP POWER SUPPLY) allows
you to apply +5 volts to the Enhanced Monitor board to provide RS-232
communication with a host computer while the mainframe is not powered on.
The jumper located just above the power connector determines whether you
source the +5V standby voltage from the monitor backup power supply
connector or from the 25-pin connector. (Refer to Enhanced Monitor Board
Jumpers on page B–4 for information on the jumper positions.)