RAD Data comm ASMI-450 - Manual (Page 25)

Introduction
ASMi-450 Installation and Operation Manual 1-7
Test and Diagnostics Capabilities
The ASMi-450 has comprehensive diagnostics capabilities. ASMi-450 models
with serial data port support the following types of test functions:
•
Local loopback on the user's port of the local ASMi-450 (LOOP LOCAL
PORT).
•
Remote loopback on the user's port of the remote ASMi-450 (LOOP REM
REM PORT).
These loopbacks may not be activated for an ASMi-450 equipped with Ethernet
interface, because this would cause a continuous state of collision on the LAN,
thereby disrupting the traffic on the LAN.
Maintenance is further enhanced by advanced self-test capabilities, and by an
automatically performed power-up self-test that provides circuit-level
diagnostics data.
Alarms
The ASMi-450 stores alarms detected during its operation in a buffer that can
hold up to 100 alarms. During regular operation, the front panel LCD display
shows if there are any alarms in the alarm buffer, to notify the local operator
that alarm conditions have been detected. The local operator can then review the
contents of the alarm buffer on the front panel display, and can delete old
alarms.
In addition to the alarm buffer, front-panel LED indicators display in real time
the activity on the ASMi-450 user's port, the state of the LAN, and the
synchronization status and transmission quality of the HDSL line, and alert
when test loops are present in the system.
Physical Characteristics
The ASMi-450 is a compact unit, intended for installation on desk tops or
shelves. Unit height is only 1U (1.75").
An optional rack-mount adapter kit enables the installation of one or two
ASMi-450 units in a 19" rack.
Power Requirements
The ASMi-450 can be powered by 115 VAC and 230 VAC, 47 to 63 Hz. As an
option, the ASMi-450 can also be ordered with a -48 VDC power supply.