Printed Circuit Boards P/Ns And Descriptions; Cpu Pcb - Agilent Technologies VS Series Operation Manual

A.2 Printed Circuit Boards P/Ns and Descriptions
This section describes the following circuit boards:
Section A.2.1 "CPU PCB"
Section A.2.2 "Motherboard PCB" on page A-4
Section A.2.3 "Ion Source PCB" on page A-5
Section A.2.4 "Turbo Controller PCB" on page A-6
Section A.2.5 "Front Panel Controller PCB" on page A-6
Section A.2.6 "Pre-Amp PCB" on page A-7
Section A.2.7 "Temperature Sensor PCB" on page A-8
Section A.2.8 "Discrete I/O PCB" on page A-8
Section A.2.9 "PROFINET I/O Module" on page A-9
A.2.1 CPU PCB
The CPU PCB (Agilent P/N R2361304) is a modified version of a PC104-based single board
Computer that functions as an embedded PC in the VS Series leak detector.
The CPU PCB circuitry provides:
32-bit, 16 MHz, integrated MC68332 microcontroller unit (MCU), which combines
high-performance data manipulation capabilities with powerful peripheral
subsystems
Battery backed SRAM for frequently updated process parameters and real time
clock/calendar
Flash Memory with boot sector
EEPROM for setup and configuration parameters
Non-isolated UART/RS-232 serial interface for communication with the external VS
Series leak detector peripherals such as:
Serial Interface for background debug mode (BDM)
EEPLD control signals generation for the Motherboard PCB
ESD protected PC104 Parallel Interface (Data, Address and Control) Bus for
communication with the Ion Source and Preamp PCBs via the Motherboard PCB
VS Series Component Leak Detector
Front Panel PCB
Turbo Pump Controller PCB
Discrete I/O PCB
A-3