Thermo Scientific AquaSensors
™
AV88 Universal Analyzer User Guide
13
2.6.
Host Communications Wiring
The AV88 can be ordered with or without digital communications to a host computer. Labeling for host
communications on screw terminals 3 and 4 indicates the type of communications provided.
When no host communications option is
installed the label will show “NC” by each
terminal.
2.7.
Measure Screen Overview
The AV88 user interface is shown in Figure 2.2. 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).
A pressed key is identified by a gray background, e.g., .
DeviceNet Modbus RS-232
Terminal 3
CAN_H Comms(-) Tx
Terminal 4
CAN_L Comms(+) Rx
991.3
S/cm AB
30.8 °C
MENU
ESC
ENTER
Figure 2.2: The elements of the
AV88 user interface.
ESC
Figure 2.1D: AV88 Host Communications Wiring
Digital Communications - Terminals 3 and 4.
