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Before unpacking any equipment, inspect all shipping containers for evidence of external damage caused
during transportation. The equipment should also be inspected for damage after it is removed from the
container(s). Claims concerning shipping damage should be made directly to the pertinent shipping agencies.
Any discrepancies should be reported immediately to the Customer Service Department at TC Communi-
cations, Inc.
The TC3025 should be located in an area that provides adequate light, work space, and ventilation. Avoid
locating it next to any equipment that may produce electrical interference or strong magnetic fields, such as
elevator shafts or heavy duty power supplies. As with any electronic equipment, keep the unit from excessive
moisture, heat, vibration, and freezing temperatures.
Standard input power to the TC3025 is 12VDC @800mA. There are two pairs of terminal block connectors
on the rear panel (labeled "PWR A" and "PWR B"). Only one pair is required to power the unit. Polarity
is indicated on each connector block. If both pairs are connected, the built-in power redundancy feature will
be utilized. When this feature is utilized, both "A" and "B" share the load. If one power source fails, the other
will assume the full load. Polarity is indicated on each connector block. Alternate power sources are available
as an option (see Chapter 4 - Specifications).
A terminal block connector on the rear panel (labeled
"ALARM") provides for the dry contact relay alarm (see
Figure 2). Normally in the OPEN position, the loss of either
fiber optic signal or power will trigger an alarm condition and
force the switch to the CLOSED position. This relay can be
used in conjunction with an external device to monitor the
condition of the fiber optic links. Note: If SW4 (DISALM) on
the front panel is in the Down position, the on-board audio
buzzer will not sound and the dry contact relay will not activate.
Note:
Dry Contact Alarm Relay (DCAR) can be ordered in Normal Closed configuration. Please contact the
factory prior to purchasing.
When used in NC (Normal Close) configuration, the relay will OPEN if the unit loses power completely or
the alarm is triggered by the loss of either fiber optic signal. If fiber optic signal is lost, the alarm "ALM"
LED will be lit and the on-board audio buzzer will be on. The relay remains CLOSED during normal
operation.
MNL-30250-02-07
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