| ALM-2001
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Ethernet Sensing Module |
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| For Detecting the Presence of
10/100/1000 Ethernet Signals |
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The ALM-2001 is normally used to sense the activity on a 10/100/1000Base-T
Ethernet port and provide an indication of an alarm condition when the port
is not active. Actual data does not need to be present since the ALM-2001
only senses signal levels (including negotiation signals) that may be
present. It does not decode the actual data itself. If no activity at all is
detected a red indicator LED on the unit begins to blink and an audible
beeper begins to sound. In addition, a set of separate normally open or
normally closed contacts are activated which can be used for the operation
of a remote device.
The ALM-2001 is connected to the Ethernet ports to be monitored by means of
standard CAT 5 or CAT 6 cables and RJ-45 type connectors. The unit may be
used in either a stand-alone mode or mounted to any of the RMP series of
rack mounting panels. An optional DIN rail adapter is also available.
Note that the ALM-2001 only detects activity on an RJ-45 port. It does not
detect any potential signal errors.
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| Specifications |
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Important Features |
| Compatibility |
10/100/1000Base-T Ethernet |
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· Visual and Audible Indications |
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Signal Connector |
RJ-45 (CAT 5, CAT 6) |
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· Remote Separate NO/NC Alarm
Contacts |
| Visual Indicator |
Blinking Red LED |
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· Stand-alone, DIN or
Rack Mountable
(same unit) |
| Audible Indicator |
Beeping Piezo Sounder |
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| Controls* |
Beeper On / Off |
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| Remote Alarm Contacts |
Normally open, Normally |
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| Contact Ratings |
0.5 A @ 125 VAC
1.0 A @ 24 VDC |
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Remote Contact Connector |
Removable Terminal Block |
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MTBF (per MIL HBK 217) |
>120,000 hours |
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| Operating Temperature |
-35° to+75° C |
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Humidity |
<95% non condensing |
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| Power Requirements |
11-24 VAC/DC @100mA |
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| Physical Size
(mm) |
5.0” x 3.0 x 1.0"
127mm x 76mm x 25.4mm |
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* Red Alarm LED and Remote Alarm Contacts cannot be turned off.
Note that all specifications are subject to change without prior notice.
Copyright 2020
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Fiber Optic Communications Systems
