TEKTELIC COMMUNICATIONS T0004437 Manuel D'instructions page 24

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Figure 13: Pearl TTU Module Ground Point
2.7 DC Power Cable Installation
The Gateway Module DC power input is isolated from chassis (earth). One lead of the DC power
feed is normally earth referenced external to the Pearl Gateway, usually at the power source by
convention.
An input overcurrent protection device rated not more than 20 A, and with the appropriate
current interrupt capacity for the power source, must be incorporated into the non-earthed
conductor(s) of the DC supply.
DC power is supplied to the Mobile Gateway Module through a two pin circular plastic
connector (CPC). The mating CPC connector shall be as specified in Table 1-2 and shall follow
the polarity identified in Figure 14.
Pearl Gateway User Manual T0004906 Version 1.6
TEKTELIC Communications Inc. Confidential Page 24 of 52