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TC1631R/S
User's Manual
Rev. 1.6
SW1 External DIP Switch Functions
Slide switch to the Down (On) position to activate the function.
SW1-1, Remote Loopback Test:
This switch activates the remote unit into Remote Loopback function.
The composite optic signal is transmitted to the remote unit and decoded, then looped back to the local unit.
SW1-2, Local Loopback Test:
This switch activates the Local Loopback function. The T1/E1 signal is
received and decoded, then looped back to the T1/E1 "out" terminals for diagnostic testing.
SW1-3:
This switch selects the Line Code for
AMI, B8ZS or HDB3
.
"Up" for
B8ZS or HDB3
and "Down" for
AMI.
SW1-4, Disable Alarm:
This switch disables the alarm buzzer and dry contact relay alarm.
SW2 Internal DIP Switch Functions
(
See Important Note on page 2 before doing any changes
)
Slide switches to the Right (On) position to activate the function.
SW2-6/SW2-7/SW2-8:
These switches define the DSX-1 cross connect distance.
There are 5 partitions to choose from. In a T1 application, this is the length of twisted pair
cable connecting the TC1631R/S to the user's equipment, which may be a CSU or DSU.
The cable lengths can be from 0 to 655 feet (see Figure 5).
Fiber Optic Specifications
Transmission Distances (typical)
The TC1631R/S is compatible with all popular sizes and types of fiber. Transmission distances up to 3km*
are typical over Multimode fiber at 850nm and 4km* at 1310nm. Distances to 34km* are typical over Single
Mode fiber at 1310nm.
Launch Power & Sensitivity
Transmitter:
LED/ELED; typical Launch Power -
-18dBm* (850nm/1310nm MM, @62.5/125µm)
-18dBm* (1310nm Single Mode, @9/125µm)
Receiver:
PIN Diode; typical Sensitivity -
-35dBm* (850nm/1310nm MM, @62.5/125µm)
-35dBm* (1310nm Single Mode, @9/125µm)
*Launch power, sensitivity and distances are listed for reference only. These numbers may vary. Contact factory for
higher loss budget requirements.
ON
1
2 3
4
ON
1 2 3 4
AMI
B8ZS/HDB3
DISALM
RMTLB
LOCLB
ON