Section 363-746-100
Revision 01
Page 5
1030
Figure 3. FRL-746 Block Diagram.
7. FRONT PANEL
7.01
The front panel of the FRL-746 contains the
following switch, indicators, and connector (see
Figure 1):
•
POWER LED Indicator
Green—power is applied and the line feed is
normal.
Off—the system is not receiving power. The
COT Line Unit fuse may have blown, or the
HDSL line(s) may be open.
•
LOOP 1 SYNC LED Indicator
Green—HDSL line 1 is in sync between the
COT and RT.
Flashing Green—HDSL line 1 is attempting to
synchronize with the remote unit.
Off—HDSL line 1 does not detect an active
remote unit.
•
LOOP 1 MARGIN LED Indicator
Yellow—HDSL line 1 margin is below a preset
level.
Off—HDSL line 1 margin is above the preset
level.
•
LOOP 2 SYNC LED Indicator
Green—HDSL line 2 is in sync between the
COT and RT.
Flashing Green—HDSL line 2 is attempting to
synchronize with the remote unit.
Off—HDSL line 2 does not detect an active
remote unit.
•
LOOP 2 MARGIN LED Indicator
Yellow—HDSL line 2 margin is below a preset
level.
Off—HDSL line 2 margin is above the preset
level.
•
•
TEST LED Indicator
Yellow—a subscriber drop or diagnostic test has
been activated at any unit in the system.
Off—there are no tests activated in the system.
•
•
FAULT LED Indicator
Red—there is a fault in the system.
Off—no faults are detected in the system.
•
ACO Pushbutton
This pushbutton functions as an LED test by
turning on all LEDs when pressed and held for
at least 1 second. When the pushbutton is
released, LEDs resume their normal status
indications. The LEDs remain active for 2
minutes, at which time the channel unit LEDs
turn off to conserve power at the remote
terminal.
•
•
RS-232
DB-9F Connector
This connector is used by technicians to
configure the PG-Flex. This is a DCE interface
and requires DTE active from the terminal to
prevent automatic log off.
