YSI 2900 series - Page 17

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Figure 2-2
2. Connect the other end of the serial cable (9-pin connector) to the RS-232 serial communication port located
on the rear panel of the Multi-Channel Online Monitor (Figure 2-3).
Fasten the connector securely with the two
connector thumbscrews.
Figure 2-3
2.2.1.3 Analog Outputs
The Multi-Channel Online Monitor must be powered off prior to connecting or disconnecting any cables
from the top or rear communication panels. Connecting or disconnecting cables with the power on may
cause software and/or communication errors with the Multi-Channel Online Monitor and 2900 Series
Analyzer.
The 2940 provides up to 8 analog outputs, 2 per vessel, from Output connectors 1–4. The 2980 provides up to 16 analog
outputs, 2 per vessel, from Output connectors 1–8. See Figure 1-5 for location of the Output connectors.
Each output connector provides two 0–5VDC analog signals as shown in the following table.
Signal
Wire Color
Vessel X Output A
Red
Vessel X Output B
Gray
Ground
Black
Refer to Section 4.5.5 Analog Output Configuration to select the chemistry associated with each output.
RS232 Port
RS232 Port