ADTRAN HDSL2 - Manual (Page 17)

HDSL2 for General Distribution Installation and Maintenance Practice Installation Guidelines
61223HDSL2L2-5B 7
4. Slide the unit into the module slot. Simultaneous thumb pressure at the top and bottom
of the unit will ensure that the module is firmly seated against the backplane of the
chassis.
5. Secure the module in place by pushing in on the ejector latch.
All Other Modules
To install any of the HDSL2 modules, with the exception of those explained above, perform the
following steps:
1. Hold the unit by the front panel while supporting the bottom edge of the module and
engage the enclosure edge.
2. Align the unit edges to fit in the lower and upper guide grooves for the enclosure slot.
3. Slide the unit into the access module slot. Simultaneous thumb pressure at the top and at
the bottom of the unit will ensure that the module is firmly seated against the backplane
of the enclosure.
NOTE
For the locally powered H2TU-R (P/N 1223024L2), a local power
supply (P/N 1353.DSK48V04) is available from ADTRAN.
Initialization
When a module is first installed, it performs a series of self-tests. Once the power up self-test
is complete, the status LEDs will reflect the true state of the hardware. For more information,
refer to
“H2TU-C Front Panel Operation” on page 16 for LED indications.