1. component, Locations – Campbell Scientific OBS-3A Turbidity and Temperature Monitoring System User Manual
Page 58
OBS-3A Turbidity and Temperature Monitoring System
FIGURE 8-1. Component locations
Unit does not communicate with PC.
There are several possible causes for this symptom.
1. The test/umbilical cable is damaged or improperly connected.
2. The OBS-3A is sleeping and will not wake up.
3. The batteries are dead.
4. The OBS-3A and PC are not set to the same baud rate or communication
protocol (RS-232, USB, RS-485).
a. Click and check COM port settings on the Connection tab. The
default baud rate is 115.2 kB. If the PC is not set to this speed, follow
the steps in Section 6.7, Connection, to set it.
50
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