Daqu — Manual
1.2
Channels
Mini Daqu is used with Rotax iS, D-motor, UL Power, Geiger wankel
and MW Fly engines. Mini Daqu has only one twelwe pin connector
for sensors and two D-SUB nine pin connectors – one for ECU and the
other for CAN network.
Optionaly, standard Daqu can be also modified to connect to engine ECU,
which effectively makes standard Daqu to act like a miniDaqu with mich more
input channels.
1.2
Channels
Daqu has digital type and analog type channels where each type has several
versions. Some channels are using two pins and some only one. They are
designated using capital letters.
1.2.1
Analog Channels
Most of the channels on Daqu are analog. They appear in following variations:
A
– analog channels with -2.5 V to +2.5 V input. These channels are float-
ing – they are not connected with GND internally. They are typically
used to connect passive resistive sensors and thermocouples. Supported
resistive sensors are various VDO pressure sensors, most temperature
sensors, some fuel level sensors, trim potentiometers, etc. J and K type
thermocouples are supported.
B
– analog channels with 0 to +5 V input. They are mostly used to read
active sensors. Active sensors require power in order to operate properly.
Do NOT connect any sensor with an output greater than +5 V. This
will permanently damage the unit.
C
– analog channel with 0 to +30 V input, used to read higher voltage levels.
Only one such channel is available and is used to measure the system
voltage.
D
– This is the same as B channel, but with additional internal 120 Ω
resistor. This allows connecting sensors with current output (4 mA –
40 mA). Rotax oil pressure is an example of such a sensor.
7
©
Kanardia
2019
