Connecting The Gnss Input - Spectracom SecureSync 1200 User Reference Manual

2.8 Connecting the GNSS Input
Mating DC Connector , circular, 3-pin, solder socket, 16AWG,13A,300V: Amphenol
P/N DL3106A10SL-3S; (Spectracom part no. P240R-0032-002F)
Cable Clamp , circular: Amphenol part no. 97-3057-1004(621); (Spectracom part no.
Spectracom part no. MP06R-0004-0001)
Pinout description, DC connector
Pin B goes to the most positive DC voltage of the DC source. For +12 V or +24/48 V this would
be the positive output from the DC source. For a -12 V or -24/48 V
ground or return of the DC source.
Pin A goes to the most negative voltage of the DC source. For +12 V or +24/48 V this would
be the ground or return output from the DC source. For a -12 V or -24/48 V
would be the negative output from the DC source.
Pin C goes to the Earth ground of the DC source.
2.8

Connecting the GNSS Input

Typical installations include GNSS as an external reference input. If the GNSS receiver is not
installed or if the GNSS will not be used as a SecureSync reference, disregard the steps to
install the GNSS antenna and associated cabling.
1.
Install the GNSS antenna, surge suppressor, antenna cabling, and GNSS preamplifier
(if required). Refer to the documentation included with the GNSS antenna for additional
information regarding GNSS antenna installation.
2.
Connect the GNSS cable to the rear panel antenna input jack (see illustration under
"Unit Rear Panel" on page 7).
In the event that NO antenna is connected to the rear panel jack, SecureSync will—once
it gets powered up (see "Powering Up the Unit" on page 216)—activate the Antenna
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