3. Configuration
CT1-CT4 (Connect Chassis GND to Logic GND) The ZT 4807's switches and ejectors are on an isolated chassis ground. These components
can be connected to the ZT 4807 logic ground by installing these four cuttable traces. All
four cuttable traces should be installed or all four removed. The factory default is removed.
Position Function
All In Front panel connectors connected to logic ground
All Out Default Front-panel connectors not connected to logic ground
CT5 (CompactFlash Operating Voltage) The factory default configuration sets the ZT 4807’s CompactFlash socket (J12) to 5.0V
operation (CT5 in position B). This setting requires the CompactFlash card to have “Type 2”
or “Type 3” input characteristics. See the “CompactFlash Input Characteristics” table in
Chapter 3 for more information.
Caution: If the CompactFlash socket is set for VCC = 3.3V operation (CT5 is in the A
position), do not connect a disk drive on EIDE connector J11. Doing so will damage the
CompactFlash device!
Position Function
A Connects the Compact Flash Circuitry to Switched 3.3VDC.
B Default Connects the Compact Flash Circuitry to Switched 5VDC.
19