Verification; Verification Without A Downstream Device; Verification With A Downstream Device - ADC HiGain H2TU-C-202 User Manual

Installation
V
ERIFICATION
Once the H2TU-C-202 is installed, verify that it is operating properly. To do this, monitor the four status LEDs.

Verification without a Downstream Device

If there is no downstream device installed:
1 Verify that the H2TU-C powers up. The four status LEDs illuminate and report the status. (See
page 5 for status LED descriptions.)
2 Verify that the H2TU-C attempts to communicate with downstream devices (the LOOP LED flashes green).
Even if a downstream device is not present, the H2TU-C again attempts communication with downstream
devices until a downstream device is detected.

Verification with a Downstream Device

If a downstream device has been installed:
1 Verify that the H2TU-C powers up. (The LOOP LED illuminates.)
2 Verify that the H2TU-C attempts to communicate with downstream devices (the LOOP LED flashes green).
One of the following occurs:
• If downstream devices are successfully identified and the HDSL2 loop synchronizes, the H2TU-C LOOP
LED lights a steady green.
• If downstream devices are not successfully identified, the H2TU-C will:
– attempt communication again and the LOOP LED will keep flashing
– repeat the cycle until a downstream device is detected
Connect the H2TU-C- 202 to the maintenance terminal to monitor the alarm messages on the terminal.
3 If there is more than one span, verify that each subsequent span synchronizes normally by monitoring the
LOOP LED.
4 If a remote unit is installed, verify that the last span synchronizes normally. The H2TU-C LOOP LED should
light a steady green.
5 Verify that a valid DS1 signal has been applied to the H2TU-C and the H2TU-R.
•
If no DS1 signal is being applied to the H2TU-C or H2TU-R inputs, then the DSX LED is off.
•
If a valid DS1 signal is being supplied to the H2TU-C and H2TU-R, then DS1 alarm indications should
be absent and the LOOP LED should light a steady green.
8 April 21, 2000
152-202-115-04, Revision 04
Table 1 on
H2TU-C-202 List 1E