HP 1660E Series Service Manual page 210

Theory of Operation
The HP 1660E/ESjEP-Series Logic Analyzer
Keyboar~ouselnterface
An 82C42PC PS2 controller makes up the PS2 Keyboard/Mouse interface. The PS2 controller
interfaces the logic analyzer backplane with the keyboard and/or mouse devices.
I/O Board
The Input/Output (I/O) Board primarily includes a Centronics port and two mini-DIN (PS/2)
ports for the HP I660EIESIEP-series products. On products ordered with the LAN interface,
the 1/0 board also includes isolation circuitry and LAN connectors for the LAN.
Hard Disk Drive Interface
Buffers interface the hard disk drive with the logic analyzer backplane.
Hard DIsk Drive
The Hard Disk Drive is an IDE-compatible disk drive. A 40-pin IDE connector allows the disk
drive to interface with the logic analyzer backplane through the hard disk drive interface.
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