- 5 -
TC1630R/S User's Manual
Rev. 2.5
Figure 2. TC1630R/S's Front Panel
LAIS
T1/E1 LINE LEN
LEN2
LOCLB
RMTLB
LEN1
HDB3
LEN0
B8ZS
AMI
LL OS
RLOS
B
A
PWR
Vcc
SYNC
RMT
LOC
AMI
B8ZS
HDB3
CSU
133
266
399
Made in U.S.A.
TCCOMM.COM
T1/E1 FIBER OPTIC MODEM
ALM
655
533
1
2
3
Rx
Tx
OPTIC
LINE CODE
LOOP BACK TEST
RxOPT
1
2
3
4
1 2 3 4
1
2
3
4
5 6 7 8
LEDs Functions
Alarm-
ALM:
Alarm indicator. The Alarm LED will light when following conditions occur:
The unit is in a diagnostic mode.
When an invalid line code or line length is set.
Optic signal is lost.
Local T1/E1 signal is lost or all ones signal is received from customer's device.
Remote T1/E1 signal is lost.
When the "Line Distance" setting is set as "1 0 0" (when SW5 is on, and both SW4 and SW3 are
Off).
Power Supply Status-
Power A/B:
These LEDs indicate which power source on the rear panel the unit is drawing from. If power redundancy is
utilized, both LEDs will light.
Vcc:
+5V Voltage indicator. This LED should light whenever power is connected to the unit. It indicates the
correct operating voltage is being derived from the power source.
Optic Signal Status-
RxOPT:
Solidly lit, it indicates optical signal received.
Flashes when the optical signal is lost.
SYNC:
Indicates a valid composite signal is being received.
Configuration Setting-
AMI/B8ZS/HDB3:
These LEDs indicate the T1/E1 line code setting (SW6, 7, 8).
CSU:
Channel Service Unit indicator. This
LED will be lit whenever the minimum T1 Line Length is set (see Configuration Table - page 10).
133-655/CSU:
These LEDs indicate the T1 Line Length distance setting (SW3, 4, 5).
Local T1/E1 status and warning-
LAIS:
When flashing, it indicates "all ones" signal received from user's equipment.
LLOS:
When flashing, it indicates the loss of the T1/E1 signal from local user's equipment.
BPV:
Bipolar Violation LEDs. These LEDs light when bipolar violations (Line Code violations) are detected. The
severity of the violation is represented by three LEDs. Higher BPV rates cause more LEDs to light.
LOC:
Indicates the Local Loopback function is enabled (SW2 is On).
Remote T1/E1 status and warning-
RLOS:
When flashing, it indicates the loss of the T1/E1 signal from remote user's equipment. This LED will be Off
when no fiber cable is connected or the fiber cable is bad.
RMT:
Indicates the Remote Loopback function is enabled (local SW1 is On).
Front Panel