7
SECTION 5- CONNECTOR WIRING
COAXIAL CONNECTORS
Most single axis sensors use a coaxial cable terminating in a coaxial
connector
.
In these cases the center conductor is used for sending
power to the accelerometer. The center conductor is also used to
transmit the dynamic acceleration signal from the accelerometer. The
shield of the coaxial cable is used as ground for the power supply and
acceleration signal. Figure 5·1 shows the coaxial connection.
TWO PIN CONNECTORS
Some single axis accelerometers use a two pin connector in place of
the typical coaxial type. _ The two pins are connected within the
accelerometer in the same way that coaxial connectors are wired. The
result Is that the two pins correspond to the center conductor and
shield of a coaxial accelerometer. The two pin configuration lends i tself
to be wired with either coaxial cable or with shielded twisted pair wire.
Figures 5-1 and 5
·
2 depict these two conventional wiring schemes.
FOUR PIN CONNECTORS
Triaxial accelerometers use four pin connectors.
In
these cases, three of
the pins are used for powering
_
the
three
individual accelerometers. The
three independent acceleration signals are also present on these same
three lines. The fourth pin Is the ground conductor and is shared among all
three integral senso
_
rs. Please refer to
the
individual specifications for your
triaxial unit to determine the particular pinout configuration.
Figure 5-1.Coaxial
Cable Connection
Figure 5-2.Two-Pin
Cable Connection
(Twisted Pair)
