Front Panel

Connectors

DATA 1	Data 1 has Power, CAN, and Serial connections used to connect to VBOX data loggers or daisy chain with other modules. This port is also used for firmware upgrades.
DATA 2	Data 2 has Power, CAN, and Serial connections used to connect to VBOX data loggers or daisy chain with other modules.
TC1/TC2	The MIM has 2 K-type thermocouple inputs. Each input is capable of measuring temperatures from 0 to 1000 °C. Each socket is the standard thermocouple socket format: The Green colour on a thermocouple plug indicates a K-type thermocouple, +ve (green wire) on the thin spade terminal. See the Technical Specification for full thermocouple specifications.
AN1 - AN8	All the analogue inputs are non-opto isolated 14-bit, 0 to 14 V inputs. They are all non-differential inputs that share the same ground. You can see the information about each separate pin on the Pinouts page.
AGND	The Ground pin for the analogue inputs.
+5V	Provides an isolated +5V output.
GND	Ground.
VPWR	A power supply that provides the same voltage as the current Input Voltage.
DOUT*	Frequency output of velocity (when connected to VBOX Mini).
AOUT*	Analogue output of velocity (when connected to VBOX Mini).
DIGIN1	Digital Input 1. Optimised for event marking due to its internal 100 Kohm pull-up resistor, with a simple switch that connects the input pin to ground. The low state is below 4 V, so it can also be used as a TTL pulse input, such as fuel flow sensor inputs.
DIGIN2	Digital Input 2. Optimised for a zero-crossing AC input signal, such as a Wheel speed signal or engine crankcase signal.
RPM**	Digital Input 3. Optimised for low-tension ignition coil signals.
GND	Ground.

* The Analogue and Digital outputs are only available when connected to VBOX Mini, and the pulses/metre for the digital output and the max velocity for the analogue output can be configured in the Input Module menu on VBOX Mini.

Press the MENU button on VBOX Mini and navigate to the Input Module menu.
Use the arrow buttons to highlight the Setup Outputs option and press OK.
Use the arrow buttons to navigate to the relevant setting and press OK to edit it.
Use the arrow buttons to increase/decrease the value and press OK to confirm the new value.

** As many modern cars have their drive transistors included in the coil pack, you cannot connect to the low-tension connection on the ignition coil. However, you can access the 5V-switched RPM signal. In this case, as you are working with a switched signal of 5 V instead of the low-tension switched signal of 12 V from the coil, we recommend you use the DIGIN2 input instead of the RPM input.

Logged Trigger State

Input State	Active - Low	Active - High
Low	High	Low
High	Low	High

Example Connections

►Analogue Connection to Potentiometer

An example of how to connect an isolated individual potentiometer to the MIM.

Connecting to a potentiometer already installed on a car, such as a throttle potentiometer, would only require the output signal from the pot and the earth to be connected to the MIM as the pot gets its power from the car.

►Digital Input 1

An example of how to connect an event marker switch to Digital Input 1, which is hardware optimised for event marker use.

►Digital Input 2

An example of how to connect a wheel speed or crankcase sensor to the MIM.

►RPM Input

An example of how to typically connect to the low tension side of an HT coil for RPM pickup.

LEDs

PWR	Indicates the power status of the MIM unit.
SC	Indicates the presence of serial signals on the DATA2 port.
TC1 /TC2	Indicates the connection status for Thermocouple connectors TC1 and TC2.