Owner's Manual

DAC Outputs
A digital-to-analog output (DAC) is a circuit that converts a binary input number into an
analog output. These outputs are useful for sending out a voltage to external device to
mirror a sensor signal for example.
The outputs can be driven from -5v to +5v and not designed to handle much loading.
Maximum 500ma
DAC1 and DAC2 as Default are set to drive the IonPump for NTK lambda control 1 and 2. DAC
3 and 4 are available. DAC1 and DAC2 can be made available to customers but needs to be
ordered this way.
Controlling the outputs is done in Scal – Via a Custom table like Basic Pwm 1. Calibrators
should assign the strategy to the correct Slave*Out listed below and then set the frequency
for the strategy at 244hz.
0% Duty = -5v
50% Duty = 0v
100% Duty = 5v
Pin Schedule
Pin Number Function Scal Assignment
A21 DAC1/NTK1I Setup for Ion Pump on Expanders as Default
A22 DAC2/NTK1I Setup for Ion Pump on Expanders as Default
A23 DAC3 Slave*Out23
A24 DAC4 Slave*Out24
Sensor Supply and Grounds
Sensor/ Analogue Grounds (AN Grounds)
Sensors and miscellaneous analogue inputs have their own Ground pins; these grounds must be kept
separate from the Power grounds shown in the first section. As there are 2 sensor ground pins you
may have to connect multiple grounds to some of the pins if you have more than two sensors.
Pin Schedule
Pin Number Function Notes
A25 ANGND1
B18 ANGND2
5V Regulated Supply
Sensors and miscellaneous analogue inputs have their own power pins which need a stable power
supply, the 5v Regulated outputs are protected and provide a stable/clean 5v which can handle
500ma Maximum.
Pin Schedule
Pin Number Function Notes
A17 5VOUT1
B10 5VOUT2