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Figure 6.1: The elements of the
measure screen.
Figure 6.2: The measure screen when
the RDO Pro-X is absent.
Thermo Scientific AquaSensors
There are seven keys for menu navigation. The MENU key is used to toggle between the menu
and the measure screen. Pressing the Menu key provides options for calibration, configuration,
communications, outputs and relays.
Measure Screen Overview
The AV38 user interface is shown in Figure 6.1. It consists of an LCD module that contains two
lines of 16 alphanumeric characters and seven keys to navigate the menu. The contrast of the
LCD module can be adjusted by simultaneously pressing the escape and up-arrow keys (for
more contrast) or the escape and down-arrow keys (for less contrast).
MENU
When the RDO Pro-X Optical Dissolved Oxygen System is not connected to the AV38 display,
the measure screen indicates the fault as shown in Figure 6.2.
MENU
Menu Structure
Pressing the menu key while a measure screen is displayed accesses the main menu. The
following table shows all accessible functions including optional features.
Main Menu Option
Calibrate (Station Number)
Configure (Station Number)
DataStick Comms
8.17 ppm
AB
30.8 °C
DS1:
ESC
ENTER
DataStick
Absent
ESC
ENTER
AV38 Main Menu Functions
Sensor calibration choices are automatically available for installed sensor head.
Enter the MENU from the measure display of interest – station in lower right.
Configuration choices are automatically available for the installed sensor head.
Enter the MENU from the measure display of interest – station in lower right.
Set the station address, baud rate and parity for the Modbus DataStick of interest.
RDO Pro-X Optical Dissolved Oxygen Measurement System
AV38 Local Display Interface
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Function
Section 6
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