All Other Modules. ADTRAN DS1, H2TU-C-231, E220 HFAC HDSL2, DSX 1, 1223024L2, 1181113L2, 1223004L12, 1223004L2, 1223026L2, 1223001L2

HDSL2 for General Distribution Installation and Maintenance Practice Installation Guidelines

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.

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