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Principles of Operation
Teledyne API
– T200 NO/NO2/NOx Analyzer Operation Manual
318
Note
These adjustments should only be performed when encountering problems with
the software calibration that cannot be rectified otherwise. See Section 12.8.4 for
more information about this hardware calibration.
PMT Output Signal (
PMT DET
)
to Motherboard
Optical Test
Generator
Electric
Test
Generator
Amp
Volts
Converter
and
Amplifier
Low Pass
Noise
Filter
PMT
Temperature
Feedback
Circuit
TEC Control
PCA
PMT Temp
Sensor
(Thermistor)
PMT Preamplifier PCA
Optical
Test
LED
X
X
X
X
Optical Test Control
from CPU
Electric Test Control
From CPU
PMT Temp Analog Signal
To Motherboard
PMT Output
Gain
Adjustment
PMT HVPS
Drive Voltage
X
D
A
Converter
MUX
HVPS Coarse
Gain
Adjustment
(Rotary)
HVPS Fine
Gain
Adjustment
(Rotary)
PMT
High
Voltage
Power
Supply
To
Motherboard
Physical Range
Select Circuitry
X
HI Range Select
From CPU
Figure 13-19: PMT Preamp Block Diagram
06858E DCN7057
Содержание T200
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