ADC HiGain HLU-200 User Manual page 8

Overview
Name
Status LEDs
Loop LED Lights whenever any of the HLU-200 system loopbacks are in
Fail LED A red LED controlled by the CBA. Used with revision 7.1.2, and
HDSL LED Flashes green during HDSL synchronization.
System option buttons
Four-character display
RX and test ports
RS-232 craft port
Pull tab
Unlike the HLU-200 List 1F, the four-character display of the
HLU-200 List 1A does not illuminate when first inserted into a
shelf slot. This conserves power if the entire CBA is power
cycled. The List 1A display illuminates for five minutes when
either of the front-panel buttons, MODE or SEL, is pressed.
4
Table 1. Front Panel Features
Function
Indicates system status.
effect.
Flashes when the AHT1U is in the armed state for an intelligent
repeater loopback command.
higher software versions, this LED lights when the HLU-200 is
first plugged into the CBA and remains lit until the CBA has
finished program download and communication with the
HLU-200. It also lights whenever there is a service-affecting
failure within the CBA. (The LED remains lit at all times when the
HLU-200 is used with revision 7.1.1 CBAs.)
Lights steady green when both HDSL loops are in sync and no
minor alarm conditions exist.
Flashes red for any of the alarm conditions, or if the on-board
48 V fuse opens.
Lights steady yellow when a self-test is in progress.
MODE and SEL buttons are used to set system options.
Four-character LCD that provides status messages for HDSL,
signal-to-noise margin, optional settings, and alarms.
Splitting access and bridging jacks (210-Bantam-type).
Accessed through a DB9/210 adapter (p/n 120-1035-01,
shipped with every unit) and configured as Data
Circuit-terminating Equipment (DCE) that allows you to control
the HLU-200 through a maintenance terminal (or a PC with
terminal emulation software).
Used to remove the HLU-200 from the CBA.
October 4, 1999
350-200-111-02, Issue 2
HLU-200 List 1A