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An introduction to Monitoring Fundamentals strictly from the perspective of telecom network alarm management.
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When you're planning your alarm monitoring, think about the future. You don't want to get locked into an alarm system that's inadequate for your future needs - but you don't want to spend too much for alarm capacity you won't immediately use, either.
The NetGuardian 832A remote telemetry unit expands its capacity as your needs change. Install a NetGuardian at your remote site now, and get exactly the right coverage for your current needs.
Then, as your remote site grows, you can extend your alarm monitoring capabilities by adding NetGuardian DX Expansion units. Each NetGuardian DX adds 48 more alarm points, and you can daisy-chain up to three NetGuardian DXs off each NetGuardian 832A base unit.
Base NG 832
The NetGuardian 832A is a full-featured remote telemetry unit. The NetGuardian supports 32 discrete alarms, 32 ping alarms, 8 analog inputs, 8 controls, and 8 serial reach-through ports. The optional NetGuardian Expansion Unit can expand the NetGuardian's discrete alarm capacity to 80, 128 or 176 discrete alarms. The NetGuardian reports to T/Mon NOC or to multiple SNMP managers - or you can use the NetGuardian's built-in Web Browser Interface and email alarm notification to monitor your remote site without a master.
For more information, check out the NetGuardian on the Web at www.dpstelecom.com/netguardian.
Protocols: SNMP and DCPx.
Discrete Inputs: 32 (expandable to 176).
Alarm Detection Speed: User-defined (3 to 999 msec).
Analog Inputs: 8.
Analog Input Range: (-94 to 94 VDC or 4 to 20 mA).
Control Outputs: 8 Form C relay contacts.
Maximum Voltage: 60 VDC/120 VAC.
Maximum Current:1 Amp, AC/DC.
IP Address Ping Targets: 32.
8 DB9 RS-232 ports
1 RJ45 10BaseT Ethernet port
1 RJ11 POTS jack
2 50-pin Amphenol connectors (discretes, controls, and analogs)
1 DB9 connector (analogs)
Modem: 33.6K internal
LCD display with descriptive text
16 bicolor LEDs
Audible Interface: Alarm speaker
Dimensions: 1.75"H x 17"W x 12"D
(4.5 cm x 43.2 cm x 30.5 cm)
Weight: 4 lbs. 3 oz. (1.9 kg)
Mounting: 19" or 23" rack
Power Input: -48VDC (-40 to -70 VDC) see options
Current Draw: 200mA
Fuse: 1 Amp GMT
Operating Temperature: 32°-140° F (0°-60° C)
Operating Humidity: 0%-95% non-condensing