ADC HiGain H2TU-C-231 List 3F User Manual page 12

Front Panel
Front-Panel Feature
Front-panel display
List number
System option pushbuttons
Status LED
Off
Green
Flashing red (at turnup)
Red
Flashing red
Yellow
Flashing yellow
CLEI and ECI bar code label
DSX-1 access jacks
BRG
LINE
Craft port (RS-232)
Configuration number
Retaining latch
4
Table 1. Front-Panel Description
Function
Displays four-character status, provisioning, and alarm system messages. The front-panel display
illuminates when power is initially applied. To conserve power the display only remains on for
5 minutes. Using the MODE or LBK pushbuttons reactivates the display and restarts the 5-minute
timer. Refer to Table 2 on page 5
Identifies the list number of the H2TU-C.
Permits user options to be monitored and modified without the need of a maintenance terminal. Used
to initiate all HiGain loopbacks and test states as well as to display DSX-1 line parameters and line
unit identity.
The status LED can report the following conditions:
Line power is off.
Normal operation.
HDSL2 acquisition.
Fuse alarm.
System alarm.
An H2TU-C Customer Remote Loopback (CREM) or a Network Local Loopback (NLOC) is in effect.
H2TU-C is in an Armed state.
Provides the human-readable Common Language Equipment Identifier (CLEI) code number and the
Equipment Catalog Item (ECI) bar code number.
Provides non-intrusive bridging jack access to (RCV) and from (XMT) the HDSL2 span at the
DSX-1 interface. Allows the two DS1 payloads to be monitored.
Provides splitting jack access to (RCV) and from (XMT) the HDSL2 span at the DSX-1 interface.
Breaks the RCV and XMT paths to permit test signal insertion and retrieval.
Provides bidirectional communication between the unit and an external terminal to allow
configuration and performance monitoring through the maintenance terminal screens.
Identifies the configuration number of the H2TU-C.
Retains the H2TU-C when in the upright position and releases the H2TU-C when depressed.
June 12, 2002
for a listing of the four-character messages.
LTPH-UM-1149-01
H2TU-C-231 List 3F