09 - VB3i Analogue and Digital I/O
Analogue Inputs
For PIN outs of the Analogue Input Connector
The VBOX 3i contains four differential 24 bit analogue input channels with a maximum sample rate of 500 Hz. Each
channel has its own dedicated analogue to digital (A/D) converter with all four channels being sampled synchronously to
each other. The voltage range of the input channels is ±50 V. Note that unlike the ADC03 module, the analogue
channels in the VBOX 3i are not electrically isolated from each other.
The analogue input connector also contains voltage outputs that can be used to power external sensors. These are a
Vbatt connection which is equal to the VBOX input voltage level and a 5 V DC out connection which is equal to 5 V ±2%.
•
VB3i V1-V3 units:
The 5 V out connection is internally protected by 350 mA thermal fuse.
•
VB3i V4 / V5 units:
The 5 V out connection is electrically isolated, allowing for up to 120 mA of current to be drawn.
The Vbatt connection is internally protected by a thermal fuse.
•
VB3i V3 - V5 units:
300 mA
•
VB3i V2 units:
200 mA
•
VB3i V1 units:
100 mA
A screw-terminal connector block is available as an option for easy connection of signal pins.
https://en.racelogic.support//Product_Info/VBOX_Data_Loggers/VBOX_3i_Range/VBOX_3i_User_Guide_(All_Variants)/09_-
_VB3i_Analogue_and_Digital_I%2F%2FO
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