Noland Engineering RS11 v3.0 Manual page 2

a) Single Engine example
Interfaces
All engine sensor and/or gauge connections are made to a terminal strip on the RS11. CANbus connection is via the 5-pin
"Micro-C" connector. A 9-pin PC cable is supplied for configuring the RS11, but may be left in place for data monitoring
(via PC) if desired. The four analog inputs (A1-A4) can accept voltages up to 30Vdc. Analog sensor full-scale voltage ranges
are jumper selectable by removing the case top. Tach inputs are often AC (alternator) or pulsed (ignition) signals, or they may
be low voltage differential (2-wire) signals, such as inductive pickups. Table 1. summarizes the RS11 interfaces.
IN, GND, OUT
rpm1+ , rpm1 -
ref
rpm2+ , rpm2 -
A1 - A4
CANbus (cable)
Reset Connector
Analog Gauge/Sensor inputs
The RS11 analog-to-digital converters operate from 0-5V where 0V is referenced to the GND terminal. To measure higher
voltage levels, jumper selectable voltage dividers are provided within the unit. Removing the RS11 cover exposes these
jumpers (see Figure 2). Inside the cover is a diagram showing the jumper positions for each voltage range, up to 30V max.
The analog inputs are high impedance so as not load your gauge or sensor.
Figure 1. RS11 Installation Examples
Table 1. Interface Description
Serial interface to PC. Used for configuration and data monitoring
Engine tachometer (Port or Single) input
2.5V reference signal (used for some tach connections)
Engine tachometer (Stbd) input
Analog inputs, selectable ranges (5V, 15V, 30V)
CANbus 'Micro C' connector. Provides power/data interface.
2-pin connector for external shutdown or reset.
b) Dual Engine example