User's Manual

Table Of Contents
Page 3–48
18 September 2007
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion™ HSD-128 High-speed Data Terminal
(g) Remote Status Panel – Cooperative Mode (Optional)
An optional “remote status panel” may be installed in installations where the HSD
is located in inaccessible or remote locations. The installation of a “remote status
panel” is recommended as it provides visual indications of each of the power,
fault, and call status of the HSD.
Note: Cooperative Mode installations DO NOT support the use of the reset
function.
1. HSD Remote LED Driver Circuit Requirements – Cooperative Mode
The circuit requirements for the HSD Remote Status LED drivers are shown
in
Figure 3–14. Each LED driver circuit has a 200-ohm current limit resistor.
The maximum cable resistance (including the forward and return paths) must
not exceed 100 ohms to provide adequate current to the 5 volt LEDs (i.e. 10
mA minimum) at the remote status panel.
It is recommended that the installer use shielded cables to provide a level of
noise immunity.
Figure 3–14. HSD Remote LED Panel Circuit – Cooperative Mode
(h) User Interfaces – Cooperative Mode
To facilitate user access to the HSD interfaces, install the following connectors
in the appropriate cabin area.
Note: Although the Ethernet interface is only supported by HSD-X transceivers,
HSD transceiver models, PN 1110-A-0150 and 1110-A-0160, and other
models of HSD transceivers with service bulletin 1110-SB-0004
accomplished, consider pre-wiring the cabin for all interfaces—even when
installing an HSD transceiver that currently does not support the Ethernet
interface.