PIN
In / Out
Description
Range
8
I
Isolated Channel 4 -
1.8 M Ohms input
impedance
9 - 10
N/C
11
O
1PPS Output
-IMU04
12
O
RS232 TxD
-IMU04
13
I
RS232 RxD
-IMU04
14
O
Vbatt
Equal to Input Voltage.
300 mA
15
O
GND
Ground
16
O
5 V Out
Isolated 5 V ±2%. 120 mA
17
O
GND
Ground
18
O
ISO-GND
Isolated Ground
19-25
N/C
https://en.racelogic.support//Product_Info/VBOX_Data_Loggers/VBOX_3i_Range/VBOX_3i_User_Guide_(All_Variants)/15_-
_VB3i_Technical_Properties/VB3i_Analogue_Input_PIN_OUTS
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