DPS Telecom NetGuardian LT G2 User manual

USER MANUAL
NetGuardian LT G2
January28, 2019
Visit our website at www.dpstelecom.com for the latest PDFmanual and FAQs.
D-UM-NGLT2 Firmware Version 1.0A

© 2018 DPS Telecom
This document contains proprietary information which is protected by copyright. All rights are reserved. No part of this
document may be photocopied without prior written consent of DPS Telecom.
All software and manuals are copyrighted by DPS Telecom. Said software and manuals may not be reproduced, copied,
transmitted or used to make a derivative work, by either mechanical, electronic or any other means in whole or in part, without
prior written consent fromDPS Telecom, except as required by United States copyright laws.
The material in this manual is for information purposes and is subject to change without notice. DPS Telecomshallnot be
liable for errors contained herein or consequentialdamages in connection with the furnishing, performance, or use of this
manual.
Notice
Revision History
April 13, 2020
January 28, 2019
June 28, 2018
February 7, 2018
December 21, 2017
August 21, 2015
March 13, 2015
November 13, 2013
September 18, 2012
July 17, 2012
June 5, 2012
April 30, 2012
April 23, 2012
Minor Updates
Updated Voice Notification Flow Chart
Added Ping Target Support
Added SNMP Alarms
Added Isolated Voltage Monitor Option
Added Derived Alarms/Controls
Minor Updates / Fixes
Added SSLcheckbox& instructions
Added new firmware controlled LEDs and DTMF commands
Added voice notification flow chart
Updated notification to clarify no SNMP v3
Updated web interface information
Initial Release

Contents
Visit our website at www.dpstelecom.com for the latest PDF manual and FAQs
NetGuardian LT G2 Overview1 1
Specifications2 3
Shipping List3 4
Optional Accessories3.1 5
Tools Needed4 6
Installation5 6
Mounting5.1 6
NetGuardian LT G2 Back Panel5.2 7
Power Connection5.2.1 8
5.2.1.1 NetGuardian LT G2 Isolated Voltage Monitor 9
Craft Port5.2.2 10
LAN Connection5.2.3 10
Modem Connection5.2.4 10
Temperature Sensor5.2.5 10
D-Wire Sensor Inputs5.2.6 11
NetGuardian LT G2 Front Panel5.3 12
Discrete Alarms and Relay Connection5.3.1 12
TTY Interface6 14
Quick Start: How to Connect to the NetGuardian LT G27 15
...via Craft Port7.1 15
...via LAN7.2 22
NetGuardian LT G2 Web Browser8 23
Logging on to the NetGuardian LT G29 23
Changing the Default Password9.1 24
NetGuardian LT G2 - Most Important How-Tos10 25
How to Send Email Notifications10.1 25
How to Send SNMP Traps10.2 28
How to Send Call (Voice) Notifications10.3 30
How to Send TRIP Notifications10.4 31
Monitoring via the Web Browser11 33
Monitor Alarms11.1 33
Monitor Derived Alarms11.2 33
Monitor Controls11.3 33
Monitor Analogs11.4 34
Monitor Sensors11.5 34
Monitor SNMP Alarms11.6 35

Monitor Ping Targets11.7 35
Monitor System Alarms11.8 35
Provisioning Field Descriptions12 37
System12.1 38
User Profiles12.2 39
Ethernet12.3 41
SNMP12.4 42
Phone List12.5 42
Notifications12.6 43
Notification Settings12.6.1 44
Schedule12.6.2 47
Alarms12.7 47
Basic Configuration12.7.1 48
Advanced Configuration12.7.2 49
Derived Alarms12.8 50
Controls12.9 51
Analogs12.10 53
Basic Configuration12.10.1 53
Advanced Configuration12.10.2 54
Sensors12.11 55
Basic Configuration12.11.1 55
Advanced Configuration12.11.2 56
Variable Bindings12.12 57
SNMP Alarms12.13 57
Ping Targets12.14 59
System Alarms12.15 60
Timers12.16 61
Date and Time12.17 61
Device Access Descriptions13 62
Firmware Upgrade14 62
Reference Section15 63
LED Funtionality15.1 63
Display Mapping15.2 64
System Alarms15.3 68
Voice Notification Flow Chart15.4 69
Derived Alarm and Control Equations15.5 69
SNMP Manager Functions15.6 71
SNMP Granular Trap Packets15.7 72
Frequently Asked Questions16 73

General FAQs16.1 73
SNMP FAQs16.2 74
Technical Support17 75
End User Lisence Agreement18 76

1
NetGuardian LT G2 Overview
1
Fig 1.1 Compact, easy-to-install, right-size capacity — the NetGuardian LT G2 ("Lite") offers a low-cost
way of effectively monitoring smaller sites.
Effective, easy-to-install, light-capacity alarm monitoring
The NetGuardian LT G2 is a compact, LAN-based, light-capacity remote telemetry unit. The NetGuardian LT G2
is designed for easy installation at smallremote sites, making it cost-effective to deploy alarm monitoring
throughout your entire telecom network.
Powerful monitoring for smaller sites
The NetGuardian LT G2 is based on the time-tested NetGuardian design used in high-capacity models. This telco-
grade remote is housed in a durable aluminum case that can be rack or wall-mounted. This SNMP remote is
scaled to the needs of small sites, such as remote huts, collocation racks, and enclosed cabinets - perfect for any
site where a large capacity RTU would be more than you need.
·Custom Voice Dial-In and Out with DTMF Acknowledge
·Data Dial-In and Out for TTYand T/Mon Alternate Path Reporting
·Up to 4 Discrete Alarm Inputs
·1 Integrated Temperature Sensor
·32 ping targets to monitor other devices
·1 Control Relay (Optional)
·Optional D-Wire Sensor Network
Easy Alerts via Phone or SNMP
When alarms occur, custom voice alerts will be sent to your phone. SNMP traps will also be sent to your SNMP
manager. Dial right into the NetGuardian LT G2 and request a verbal report using custom Voice Dial-Out
technology with DTMF acknowledge.
SNMP or T/Mon LNX
The NetGuardian LT G2 can report alarms to any SNMP manager or to the DPS Telecom T/Mon LNX Remote
Alarm Monitoring System using either SNMP or DCPx. The NetGuardian LT G2 can also report via SNMP and
DCPx.
Easy installation and configuration
Since it's LAN-based, the NetGuardian LT G2 installs quickly and easily, without the expense of laying dedicated
lines. The unit mounts in any 19" or 23" rack and occupies only 1 RU. The unit has spring-clamp terminal
connectors to make wiring alarms fast and easy. The front-panel LEDs show you the status for each alarm input

2
and other summary status.

3
Specifications
2
Hardware
Dimensions:
1.720"H x 8.126"W x 7.146"D
Modem:
33.6 K Internal
Mounting:
19” or 23” Rack
Weight:
1 lb. 5 oz.
Discrete Alarm Inputs:
Up to 4
2 Discrete Alarm Length:
200Ft. per Alarm
Power Input:
Wide Range -24/-48VDC (-20 to -56 VDC)
+24 VDC nominal via 110VAC wall
transformer (20 to 36 VDC)
Analogs:
2
-48VDC nominal (-36 to -72 VDC)
Input Range:
0V - 4.5V or 4 to 20mA
4 Analog Accuracy:
± 1% of Analog Range
3 Current Draw:
100mAmax @ 48VDC
Fuse:
Internal Resetable or GMT(depends on
voltage)
Control Outputs:
1 FormC
Max Voltage:
110 VDC
1 Power Outputs:
6w (12v), 12w (24v)
Max Current:
1A AC/DC
Voltage Output
Options:
+12 VDC, +24 VDC
Output Current:
500mA total
Output Fuse:
500mA5x20mm glass fuse
OperatingTemp:
32° to 140°F(0° to 60°C)
Audible Interfaces:
N/A
1 Industrial OperatingTemp:
-22° to 158°F(-30° to 70°C)
Visual Interfaces:
10 Firmware-Controlled LEDs
Storage Temp:
2 Hardware-Controlled LEDs
OperatingHumidity:
95% non-condensing
3 LAN Connector Hardware LEDs
MTBF:
60 Years
1 Hardware
Interfaces:
1 RJ45 10/100BaseT full-duplex
Ethernet port
RoHS:
RoHS 5 Approved
1 USB5rear-panel craft port
1 RJ11 telco jack
OrderingOptions:
Battery input voltage monitoring
Up to 4 Alarm input connectors (2 inputs
per alarm)
(Optional)1 4-20 mASensor
1 Relay output connector (NO, NC, CO)
(Optional)1 12/24VDC Sensor power
output up to 1/2A
1 Push button switch
Software
Downloadable
Firmware:
Yes
1 D-Wire Sensor Support:
(Optional)1 RJ11 up to 16 D-Wire
Sensors
Built-in Web Interface:
Yes
Browser Support:
IE9, IE10, Firefox
PingAlarms:
32
Protocols:
DCPx, TELNET, HTTP, HTTPS, TRIP
SNMP Support:
V1, V2c, V3
OS Support:
XP, Vista, 7 (32 or 64 bit)
Note:
1Valid if hardwareoption is included.
2Minimum lengths determined with TTL voltage level alarms. Actual distance may vary.
3Current measured at rated voltage with all controls latched and all alarms triggered.
4See analog section in manual for detailed analog accuracy breakdown.
5We always recommend checking for ground potentials before using the USB port and suggest using a USB isolation device for additional protection. Without USB isolation, ground
potentials can damageyour computer and/or equipment and adversely impact warranty coverage.
* This equipment has been tested and found to comply with the limits for aClass A digital device,pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with theinstruction manual, may cause harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

4
Shipping List
3
Please make sure all of the following items are included with your NetGuardian LT G2. If parts are missing, or if you
ever need to order new parts, please refer to the part numbers listed and call DPS Telecom at 1-800-622-3314.
NetGuardian LT G2 NetGuardian LTG2 Resource Disk
D-PK-NGDLT
x 1
NetGuardian LT G2 User Manual Locking Power Connector
D-UM-NGLT2 2-820-35102-00
x 1 x 1
6 ft. USB Craft Port Cable 14 ft. Ethernet Cable
D-PR-046-10A-06 D-PR-923-10B-14
x 1 x 1
Telephone Cable 6 ft Short Rack Ear
D-PR-045-10A-01 D-CS-325-10A-00
x 2 x 2
Wall Mount Bracket Two wall mount bracket chassis screws
D-CS-532-10A-05 2-000-60250-01
x 2 x 4
Two Standard Rack Screws Four 3/8" Ear Screws
1-000-12500-06 1-000-60375-05

5
x 2
Two Metric Rack Screws Pads
2-000-80750-03 2-015-00030-00
Optional Accessories3.1
Power plug to open end +24V Wall Transformer
D-PR-1047-10A-10 D-PR-105-10A-02 OR
(D-PR-105-10A-09 for right-angle)
x 4
Long ear, 19" rack Four 3/8" Ear Screws
D-CS-325-10A-08 1-000-60375-05
x 2
1/2 Amp GMT fuses Small WAGO connector
2-741-00500-00 2-802-01020-00
RJ-11 Cable for D-Wire Sensors
Cable Ordering Options
D-PR-901-10A
-
"Desired Length In ft"
Straight-Through RJ-11
Cable
Overall Length
01 = 1ft
99 = 99ft
Example: For a 25ft. cable, the part number would be D-PR-901-10A-25

6
Tools Needed
4
To install the NetGuardian, you'll need the following tools. NOTE: To install the NetGuardian LT G2 in one of the
wall-mount configurations, you will also require a wrench or driver capable of tightening 3/8" hex nuts.
Wire Strippers Phillips No. 2 Screwdriver (For rack mounting)
Installation
5
Mounting5.1
Fig. 5.1 The NetGuardian LT can be front or rear-mounted
The compact NetGuardian LT occupies only half the width of a standard rack unit. 19" rack ears are supplied with
the NetGuardian LT. The NetGuardian LT mounts in a 19"or 23"rack, and can be mounted on the right or left, or
rear mount locations, as shown below.
Fig 5.2 Use the included wall mount bracket to mount the NetGuardian LT vertically on the wall.
Wall-Mounting Instructions
The rack ears can be rotated 90° for wallmounting or 180º for other mounting options (not shown).

7
1. Depending on your order options, you will can attach wall-mount flanges to both sides of the unit in one of two
ways:
a. Place the flange over the protruding screws and fasten it to the 3/8" hex nuts provided.
b. OR Fasten the flange to the NetGuardian LT with two of the 6/32 screws provided. (NOTE: Screws longer
than those provided may contact the internal components of the unit, adversely affecting its normal
operation.)
2. After flanges have been attached to the NetGuardian LT, mount the unit in the desired location with two
screws through each flange.
Fig. 5.3 The NetGuardian LT also mounts on your 19" or 23" equipment racks.
Rack-Mounting Instructions
The NetGuardian LT mounts onto one side of a 19"or 23" rack using the provided rack ear for either size. The ear
can be rotated 180 degrees during installation to adjust the position of the unit relative to the rack. Attach the
appropriate ear to the rack in the desired location.
NetGuardian LT G2 Back Panel5.2
Fig. 5.2.1 NetGuardian LT G2 back panel connections

8
5.2.1 Power Connection
The NetGuardian LT G2 is typically powered by a screw terminal barrier plug connector, but other options exist.
Fig. 5.2.2 Screw terminal barrier plug connector
Note: Always use safe power practices when making power connections. Be sure to remove fuses from the fuse
distribution panel, as well as the back of the NetGuardian LT G2, before making your power connections.
To connect the NetGuardian LT G2 to a power supply:
1. Use the grounding lug to connect the unit to earth ground. The grounding lug is next to the symbol .
2. Insert the eyelet of the earth ground cable between the two bolts on the grounding lug (Ground cable not
included).
3. Insert a battery ground into the power connector plug's right terminal and tighten the screw.
4. Insert a battery lead to the plug's left terminal and tighten its screw.
5. Insert fuse into the fuse distribution panel.
6. Check the power status LED for polarity.
7. Measure voltage. Connect the black cable onto the ground connector of your DVM.
8. Red cable onto the other connector of your DVM.
9. The voltmeter should read between -36 VDC and -72 VDC.
Note: If the voltage does not read between -36 VDC and -72 VDC, stop immediately.
10. Insert the localfuse into the power fuse slot. The power plug can be inserted into the power connector only
one way to ensure the correct polarity.
Note: The negative voltage terminal is on the left and the GND terminal is on the right.
11.Verify that the LED is lit. To confirm that power is correctly connected, the front panel status LED will
flash RED and GREEN, indicating that the firmware is booting up.
An optional version of the NetGuardian LT G2 is powered by a screw-on plug, as seen in the image below.
Fig. 5.2.3 Close-up view of NetGuardian's screw-on power connector.

9
To connect the NetGuardian LT G2's power supply with a screw on plug, follow these steps:
1. Plug in the power connector to the rear panel of the NetGuardian LT G2.
2. Twist the collar of the plug to lock in place.
3. Plug in the wall transformer to a power outlet.
5.2.1.1 NetGuardian LT G2 Isolated Voltage Monitor
The Isolated Voltage Monitor is an optional feature that allows you to monitor the voltage of the unit while being
separate from GND. This is Isolated Bonding Network (IBN) standard.
For calibration and other information regarding this feature, see the sections below.
Calibration:
While your Isolated Voltage Monitor will be calibrated before leaving the factory, it might be necessary to do
further calibrations once the device is deployed. To calibrate your unit, follow the steps below:
·Establish a TTY interface connection with the unit you wish to calibrate.
·Once logged in, enter 'C' for config.
·Enter 'H'.
oNOTE: 'H' is a hidden option. It will not be present in the list of available options.
·Enter 'C' for calibrate.
·Using a multimeter, take a reading from the Power B input of the device.
·Enter the voltage reading from the multimeter in the TTY interface and press 'Enter'.
·To verify that the calibration has taken affect, you can view Power Input B voltage in the Monitor > Analogs
page of the device's web browser interface.
View Enabled/Disabled Calibration Feature Status:
When your device arrives from the factory, the Isolated Voltage Monitor Calibration feature should be
automatically enabled. To double-check that it is enabled, use the following steps:
·Establish a TTY interface connection with the desired unit.
·Enter 'S' for stats.
·There will be a line item for 'IVM VDC adjust:Enabled' if the device has the calibration feature enabled.
Otherwise, this line item will not be visible.
Enabling the Isolated Voltage Monitoring Calibration Feature:
If for some reason the Isolated Voltage Monitor Feature is disabled, use the following steps to enable it before
calibration:
·Establish a TTY interface connection with the unit you wish to calibrate.
·Once logged in, enter 'C' for config.
·Enter 'H'.
oNOTE: 'H' is a hidden option. It will not be present in the list of available options.
·Enter 'E' for enable.
·Enter 'Y' to confirm you wish to enable the calibration feature.
·Once enabled, you may calibrate the voltage reading if necessary.

10
5.2.2 Craft Port
The back panel craft port is primarily used to give the NetGuardian LT G2 an IP address so you can continue the
rest of your database configuration over LAN. Use a terminal emulating software program like HyperTerminal to
enter the NetGuardian LT G2's TTY interface. Please see the Quick Start section for instructions.
5.2.3 LAN Connection
Fig. 5.2.3 LAN Connection Pinnout
LAN is used for web browsing to the NetGuardian LT G2. You can also do your databasing over LAN, as well as
sending email notifications and SNMP traps. To connect the NetGuardian LT G2 to the LAN, insert a standard
RJ45 Ethernet cable into the 10/100BaseT Ethernet port on the back of the unit. If the LAN connection is OK, the
LNK LED will light SOLID GREEN.
5.2.4 Modem Connection
Fig. 5.2.4 Modem Connection Pinnout
The NetGuardian LT G2's Modem connection is used for voice or TRIP notifications. The rear panel modem jack
connects the NetGuardian LT G2 to a standard telephone line. This will allow you to dial in / dial out from the unit.
5.2.5 Temperature Sensor
Fig. 5.2.5 Temperature sensor

11
1 Integrated Temperature Sensor
The NetGuardian LT G2 features one internal temperature sensor, used to monitor the ambient temperature. The
internal temperature sensor measures a range of -40° F to 180° F (-40° C to 82.2° C) within an accuracy of about
± 2°.
5.2.6 D-Wire Sensor Inputs
The ports on your NetGuardian LT G2 labeled Sensor Input support up to 16 D-Wire sensors. Your
NetGuardian LT G2 powers and communicates with your D-Wire sensors via simple RJ-11 connections. You can
chain your 16 sensors to the D-Wire port on the back of the NetGuardian LT G2 in any order or combination.
The max cable length depends on the number of sensors daisy chained together. The cable lengths and
corresponding number of sensors can be seen in the table below.
Table 5.2.6 Maximum Cable Lengths
Note: Some sensors may consume 2 analog channels (the combined temp/humidity sensor, D-PK-DSNSR-12002,
for example).
Connecting D-Wire Sensors
Using a standard 6P4C, straight-through RJ-11 cable (part #D-PR-045-10A-01, pinout below), connect any
digital sensor port on the NetGuardian LT G2 to the In jack on a D-Wire sensor. Chain additional sensors to the
D-Wire sensor (using the same straight-through cables) from the Out jack on the previous sensor to the In jack on
the next (i.e. Out on sensor 4 to In on sensor 5).
Pinout for the NetGuardian LT G2 and D-Wire Sensor RJ-11 jacks
The D-Wire line of sensors includes temp/humidity, additional analogs, discretes, and more. Contact DPS at 1-800-
693-0351 for information about available D-Wire sensors.
For details about configuring your sensors though the web interface, see the Sensors section of this manual.

12
NetGuardian LT G2 Front Panel5.3
5.3.1 Discrete Alarms and Relay Connection
Fig. 5.3.1 Discrete alarm inputs, analogs and control relays are wired using the spring-clamp terminal
block connectors.
Convenient Latching Terminations - No Screwdriver Necessary
The spring-clamp terminal block connectors make wiring alarms fast and easy. The NetGuardian LT G2 features
up to 4 discrete alarm inputs (depending on your build option.) There are 2 input poles per alarm. The analog
(depending on your build option) is intended for monitoring a single 4-20mA sensor. Your option may also include
either 12 or 24VDC power output for power a sensor up to 1/2 AMP. The unit's relay connector has 3 outputs for
Normally Open (NO), Normally Closed (NC), and Common (CO).
1. Strip a small piece off the end of the wire.
2. Flip open the connector for the desired alarm input. Lock it down over the wire.
3. Indicator LEDs on the front panel show you the summary status. Check for solid green light to see if power is
connected.

13
Contact to Ground
–Batt.
Alarm
DryContact
–Batt.
GND
Alarm
NetGuardian LT G2 case NetGuardian LT G2 case
Note: Make sure that groundshave a common reference —
thisisusually done by tying groundstogether.
GND
Form-C Contact
NetGuardian LT G2 case
C
NC
NO
X
_
Fig. 5.3.2 Discrete alarm points can connect as a dry contact, a contact to ground, or a Form-C contact
The discrete alarm inputs are also called digital inputs or contact closures. Discrete alarms are either activated or
inactive, so they're typically used to monitor on/off conditions like power outages, equipment failures, door alarms
and so on.
The unit's discrete alarm points are single-lead signals referenced to ground. The ground side of each alarm point
is internally wired to ground, so alarm points can connect either as a dry contact or a contact to ground.
In a dry contact alarm, the alarm lead brings a contact to the ground lead, activating the alarm. In a contact to
ground alarm, a single wire brings a contact to an external ground, activating the alarm.

14
TTY Interface
6
Fig. 6.1 The TTY interface initial configuration screen
The TTY interface is the NetGuardian's built-in interface for basic configuration. You can configure unit's
Ethernet port settings, view debug, and monitor alarms. For more advanced configuration tools, please use the
Web Browser Interface.
Some initial software configuration must be performed before you can use a remote connection to the
NetGuardian LT G2. For Telnet, connect to the IP address at port 2002 to access the configuration menus after
initial LAN/WAN setup. The same TTY interface is available through the front craft port. Telnet sessions are
established at port 2002, not the standard Telnet port as an added security measure.
NOTE: The default TTY username is "admin"and the password is "dpstelecom".
Menu Shortcut Keys
The letters before or enclosed in parentheses () are menu shortcut keys. Press the shortcut key to access that
option. Pressing the ESC key will always bring you back to the previous level. Entries are not case sensitive.