Ziatech ZT 4804 /ZT 4804 Rear Transition Module

The ZT 4804 is a single slot, 6U rear-panel transition board providing rear-panel access to
the I/O functions of specific Performance Technologies processor boards. The ZT 4804
also provides interfaces for two user inputs and six alarm relay outputs. It is designed to
function only in the rear-panel slot of a 6U CompactPCI* system (such as a ZT 5411
enclosure).

Features
• SMBus interface for alarm control
• Six single-pole normally open or normally closed (jumper-selectable) relay outputs
(critical, major and minor; audible and visual)
• Two optically-isolated debounced user inputs (5 V or 60 V input range,
jumper-selectable)
• Host hot-swap activation via bottom ejector latch circuitry
• Rear-panel interface connectors for host:
– COM 1 micro-miniature (MDSM) DB-9 serial
– COM 2 micro-miniature (MDSM) DB-9 serial
– PS/2 Keyboard
– PS/2 Mouse
– Ethernet A
– Ethernet B (in non-High Availability systems only)
• Internal interfaces (i.e., not on the faceplate):
– Floppy Interface
– IDE Interface (Host secondary channel only)

• Rear-panel switches:
– ACO Switch
– Reset Switch
– Hot-Swap Initiate (integrated in the bottom ejector lever)
• Rear-panel LEDs indicate:
– Critical, Major, and Minor Alarms
– Floppy drive active
– IDE drive active
– Alarm Cut-off (ACO)
– Hot Swap LED (indicates when it’s OK to remove the board)