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TC3715 w/Rate Limit
User's Manual
Rev. 2.0 (A0.1)
Dry Contact Relay Alarm
Two terminal block connectors on the rear panel (labeled
"ALARM RLY1," & "ALARM RLY2") provide for the dry
contact relay alarm (see Figure 1). Normally in the OPEN
position, any loss of optical signal 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 condi-
tion of the fiber optic links.
Dry Contact Alarm Condition:
When the front panel LINK/ACT LED is lit and/or blinking, the TC3715 is working well and thus it is not
in Alarm Condition. Otherwise, if the LINK/ACT LED is "Off" the TC3715 will be in Alarm Condition and
the Dry Contact Relay will be activated.
Power Requirements
A.
The TC3715's standard input voltage is 12V DC and current is 600mA.
B.
The TC3715's power connectors are two terminal blocks located on the rear panel of the unit. Polarity
is indicated on each connector block (see Figure 1).
C.
Should an external power adapter need to be replaced, use one with the following specifications: 12V
DC @600mA. You may order it directly from TC Communications.
D.
The TC3715 can also be ordered with an optional 24 VDC, 48 VDC or power supply. Current
consumption at 24VDC is 300mA, at 48VDC is 150mA, and at 125VDC is 60mA.
System Start Up
1.
Apply the power by plugging the power plug into any power jack on the rear panel. The power source
can be from a power adapter or from a power card (installed either on the left or right side of the rack).
2.
The "PWR A" or "PWR B" LEDs on the front panel will light according to which power jack (A or B)
is connected. Both LEDs will light when power redundancy is utilized.
3.
The "Vcc1" and "Vcc2" LEDs should also light, indicating an adequate operating voltage is being derived
from the power source.
4.
Connect the twisted pair cables to the RJ-45 connectors on the front panel of the switches. If the twisted
pair cables are providing an Ethernet signal, then the corresponding front LEDs for that particular
channel will light as follows:
a). If the user's device is in auto-negotiation mode and 100Mbps full duplex is detected by the switch,
the 100M & FULL/COL LEDs will be solidly lit and the LINK/ACT will blink as activity is detected.
b). If the user's device is in a dedicated mode and 100Mbps full duplex or half duplex is detected by
the switch, the 100M LED will be solidly lit and the FULL/COL and LINK/ACT LEDs will blink
as activity is detected.
c). If 10Mbps full or half duplex is detected by the switch, the 100M LED will be "Off" and the FULL/
COL and LINK/ACT LEDs will be blinking.
d). If half duplex and collisions are detected by the switch, the FULL/COL LED will be blinking.
5.
Connect the optical fibers from the Tx connector of one unit to the Rx connector of the second unit, the
LINK/ACT LED of the fiber port on the second unit will be solidly lit. Do the same for the second pair
of Rx to Tx connectors and observed the LINK/ACT LED on the first unit will be lit.
7.
When communication is established and traffic passes through the fiber between two TC3715's the
LINK/ACT LED will blink.
