Configuration Of Photometry Adc Hardware - Hitachi 902 Service Manual

7.2.2 Configuration of Photometry ADC Hardware

Configuration of Photometry ADC Hardware
LOG AMP
output (for 12
wavelengths)
Reference
voltage 2 V
Reference
voltage 6 V
(1) The ADC controller converts the analog values of the LOG AMP output voltage, reference
voltage 2 V and reference voltage 6 V to the digital ones upon receiving the instruction
from the application via the driver and stores the digital values into the DPRAM.
The values are taken in the application via the driver.
(2) The application accesses to the driver, but does not control the ADC directly.
ADC Setting Parameters
• Integration = 32 times
• Hardware trigger time-out = 150 msec
• Software trigger interval = 30 msec
MPX
Buffer amplifier ADC controller
ADC
DPRAM
ADC control
7 - 15
Driver
Application
(software)
(software)