Connecting Reference Input(S) And Network Interface(S); Connecting Reference Input(S) And Network Inter- Face(S) - Spectracom SecureSync User Reference Manual

is connected to a DC power source that is connected to earth ground via the ground-
ing pin C of the SecureSync DC power plug supplied in the ancillary kit.
A DC power connector to attach DC power to SecureSync is included in the ancillary kit provided
with the equipment. A cable of 6 feet or less, using 16AWG wire, with adequate insulation for the
DC voltage source should be used with this connector. The cable clamp provided with the DC
power plug for strain relief of the DC power input cable should be used when DC power is con-
nected to SecureSync.
DC power connector pin-out:
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
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
ative output from the DC source.
Pin C goes to the Earth ground of the DC source.
2.8

Connecting Reference Input(s) and Network Interface(s)

SecureSync can synchronize to various external inputs (including GNSS, IRIG, NTP, PTP, 1PPS,
ASCII time code, HAVE QUICK, 10 MHZ and/or a user set time).
Depending on the desired operation and your specific SecureSync configuration, connect the
GNSS, IRIG, 1PPS or other external references ( NTP input reference and User- Set Time are
software configurations that require no additional physical connection to SecureSync).
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2 SecureSync User Reference Guide Rev. 18
Caution: The DC input port is both fuse and reverse polarity protected. Reversing
polarity with the 24/48 V
power-up. Reversing polarity with the 12 V
NOTE – Spectracom recommends to use a dedicated DC power supply switch to
energize/de-energize SecureSync externally.
SecureSync DC Connector: Amphenol P/N DL3102A10SL-3P
Mating DC Connector : Amphenol P/N DL3106A10SL-3S
2.8 Connecting Reference Input(s) and Network Interface(s)
option will not blow the fuse, but the equipment will not
DC
option will likely blow the internal fuse.
DC
source this would be the ground
DC
source this would be the neg-
DC
25