Doc No. IM4772-7
Page 9 of 14
iSense
4.3
Connecting the Batteries
The battery pack is held in place against the front panel of the iSense unit by two Velcro fasteners. Simply
peel the Velcro apart to release the battery pack (see Figure 2). A new pack can then be fastened in place
using the same Velcro sleeves.
The connection of the new battery pack to the iSense circuit board is done by inserting the battery plug from
the pack into the battery terminal, located on the circuit board.
Figure 2 Connecting the Batteries to the iSense Circuit Board
4.4
Connecting Vehicle Power Supply
The vehicle power supply connects to terminals 7 and 8 on the PCB connector inside the iSense unit.
Unscrew and remove the lid, connect the vehicle supply cable as below:
Yellow/Red wires, ve, connect to terminal 8
Blue/Green wires, iSense -ve, connect to terminal 7
Black/Blue wires, Vehicle
–ve, connect to vehicle negative
Brown wire, vve, connect to vehicle positive
Vehicle power should be sourced from as clean a supply as possible; the inline fuse is 250mA, input range is
+15V to +30V.
If required, replacement fuse is IMC part number G097, 20MM 250mA anti surge fuse.
4.5
Operating Environment
Maximum temperature ranges are:
Operating range with battery 0C to +40C.
Operating range with external power supply -20C to +55C.
Operating range with vehicle power supply 0C to +55C.
Storage temperature range, (without battery), -40C to +80C.
Note:
The above ranges apply to the iSense unit itself, these do
not
apply to input probes, check probe
operating ranges as these will vary from probe to probe.
