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Chapter 2 - Installation and Setup HCD-E1
Installation & Operation Manual
2-10 Installation and Setup 11/12/00 10:36
Reinstalling the HCD-E1 Cover
After completing the internal settings, reinstall the top cover as follows:
1. Position the lower half of the HCD-E1 case on a flat, clean surface.
Check that the decorative black plastic strips on the sides of the unit are
still in place (if not, place the strips in the grooves on the sides of the
lower half).
2. Identify the front and the rear of the top cover, and position the cover
on the lower half of the HCD-E1, so that the cover guides are located
just above the holes in the lower half. Close the cover and ensure that
the protruding tips of the cover guides enter the corresponding recesses
in the lower half.
3. Hold the cover in place and turn the assembly over, to gain access to the
bottom of the unit.
4. Insert the original cover screws in their positions and tighten carefully.
Do not use excessive torque.
Connecting the
Interfaces
Figure 2-5 shows a typical rear panel of a standard HCD-E1 unit and
identifies its connector locations.
ALM RLY
CHANNEL
CH.2
CH.1
TX IN
SUB E1
RX OUT
NETWORK
LINE A
12
HDSL
LINE B
4
5
P
O
W
E
R
~100-240 VAC
0.5A T 250V
Figure 2-5 HCD-E1 Rear Panel (AC Powered Unit)
Connecting the E1 Sublink
The balanced interface of the E1 sublink is terminated in an RJ-45
connector. Appendix B provides the pin allocation for this connector.
The unbalanced interface is terminated in two BNC connectors.
Connect the E1 sublink cable(s) to the connector(s) corresponding to the
interface in use. Do not connect to both the balanced and unbalanced
connectors!
•
When using the DTE with balanced interface, connect the DTE cable to
the RJ-45 connector designated SUB E1.
•
When using the DTE with unbalanced interface, connect the DTE cable
to the two BNC connectors designated RX/OUT and TX/IN. Pay attention
to correct connection of the receive and transmit cables to the RX/OUT
and TX/IN connectors.