Autosampler Main Board (Asm) - Agilent Technologies G1313A Reference Manual

Table 46
Theory of Operation

Autosampler Main Board (ASM)

Autosampler Main Board (ASM)
Common Electronics
A common electronics and firmware design is used for all Agilent 1100
Series LC modules. This core design provides a basic set of functions to
each module.
Common Electronics
Core-processor
Core-memory
Communication Interfaces The core unit supports direct the following interfaces:
ASIC — Application-Specific Integrated Circuit
The application-specific integrated circuit (ASIC) provides interfacing to
external devices through drivers, including GPIB, CAN, APG Remote. It is
directly connected to the four control LEDs located near the connectors on
this board and the 8-bit configuration switch which is used to configure
the address for the GPIB communication, baud rate for RS-232 transfer,
and so on. Also, the ASIC controls and drives module specific functions
and reads static status signals.
Leak Converter
Solvent leaking from the autosampler cools down the PTC. This changes
the resistance of the PTC causing the leak converter to generate a leak
220
MC68332
The core unit has 3 memory blocks:
128k *16 bit PSRAM
1M*8 Flash memory
32k*8 NVRAM
24*8 serial NVRAM from the real time clock
CAN bus
GPIB
RS232
Remote
MIO