Once the unit is up and running, verify that the green link light on the Ethernet port is illu-
minated. The amber “Activity” link light may periodically illuminate when network traffic is
present.
2.9 Connecting Inputs and Outputs
SecureSync can synchronize not only to an external GNSS reference signal, but also to other
optional external references such as IRIG, HAVEQUICK and ASCII inputs (in addition to net-
work based references such as NTP and/or PTP).
At the same time, SecureSync can output timing and frequency signals for the consumption by
other devices via the same formats as listed above.
E X A M P L E :
With the available IRIG Input/Output option card module (Model 1204-05) installed in an option
bay, IRIG time code from an IRIG generator can also be applied as an external reference input (either
in addition to, or in lieu of GNSS, NTP, user set time and other available reference inputs).
To use e.g., an external IRIG reference, connect the IRIG time source to the BNC connector “J1”
on the optional IRIG Input/Output module. For additional information on optional connectivity,
such as pinout tables, signal levels and other specifications, see "Option Cards" on page345.
Note that some option cards offer both input and output functionality, while others offer only
one or the other.
2.10 Powering Up the Unit
1.
After installing your SecureSync unit, and connecting all references and network(s),
verify that power is connected, then turn ON the unit using the switch on the rear panel
(only if equipped with AC power input), and wait for the device to boot up.
Note: DC input power is not switched, so SecureSync will be powered up
with DC input connected, unless you installed an external power switch.
2.
Observe that all of the front panel LEDs momentarily illuminate (the Power LED will then
stay lit) and that the Information display LCD back light illuminates. The fan may or may
not run, depending on the model year of your SecureSync unit. For more information,
see "Temperature Management" on page297.
The time display will reset and then start incrementing the time. About 10 seconds after
power-up, “Starting up SecureSync” will be displayed in the information display. After
2.9 Connecting Inputs and Outputs
CHAPTER 2 • SecureSync User Reference Guide Rev. 26
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