DPS Telecom NetGuardian 240T Instructions for use

HARDWARE USER MANUAL
NetGuardian 240T / 216T
October 27, 2017 D-UM-NETGT / D-UM-NETGT
Visit our website at www.dpstelecom.com for the latest PDF manual and FAQs.
Firmware Version 1.0

© 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 Telecomshall not be
liable for errors contained herein or consequential damages in connection with the furnishing, performance, or use of this
manual.
Notice
Revision History
October 27, 2017
February 10, 2014
November 11, 2013
August 9, 2013
August 6, 2013
July 31, 2013
Added pluggable back panel to optional accessories
Added 216T "Build Option"
Added wide range power to "Specifications"
Revised "Power Connection", "Shipping List", "Specifications"
Added device photos
Manual Created

Contents
Visit our website at www.dpstelecom.com for the latest PDFmanual and FAQs
NetGuardian 240T/216T Overview1 1
Shipping List2 2
Optional Accessories3 3
216T G2 Build Option4 4
Specifications5 5
Hardware Installation6 6
Tools Needed6.1 6
Mounting6.2 6
Power Connection6.3 7
LAN Connection6.4 8
Alarm and Control Relay Connections6.5 10
Alarm and Control Relay Connector Pinout Table6.5.1 11
Discrete Alarms6.6 13
D-Wire Sensor Inputs6.7 14
Connecting to D-Wire Sensors6.7.1 14
Serial Ports6.8 15
Optional 66 Block Connector6.9 16
LCD Display7 18
Alarm and Control Status Messages7.1 18
LCD Command Menu7.2 19
Sound off7.2.1 20
Reboot7.2.2 20
Run Config7.2.3 20
Contrast7.2.4 21
Alarm Speaker8 21
Front Panel LEDs9 22
Back Panel LEDs10 23
Configuring the NetGuardian11 23
Connecting to the NetGuardian12 24
... via Craft Port12.1 24
... via LAN12.2 25
... via WAN12.3 26
TTY Interface13 26
Establishing an SSH Session13.1 27
Unit Configuration13.2 28

Ethernet Port Setup13.2.1 28
Tune 202 Modem13.2.2 29
RADIUS Configuration13.2.3 30
TTY Command Mode13.2.4 31
Monitoring13.3 34
Monitoring the NetGuardian13.3.1 34
13.3.1.1 Monitoring Base Alarms 35
13.3.1.2 Monitoring Ping Targets 35
13.3.1.3 Monitoring and Operating Relays (Controls) 36
13.3.1.4 Monitoring Analogs 36
13.3.1.5 Monitoring System Alarms 37
13.3.1.6 Monitoring Data Port Activity 38
13.3.1.7 Monitoring the Accumulation Timer 39
Viewing Live Target Pings13.3.2 40
Proxy Menu13.3.3 40
Event Logging13.3.4 41
Backing Up NetGuardian Configuration Data via FTP13.3.5 42
13.3.5.1 Reloading NetGuardian Configuration Data 42
Debug Input and Filter Options13.3.6 43
Reference Section14 44
Display Mapping14.1 44
System Alarms Display Map14.1.1 45
SNMP Manager Functions14.2 48
SNMP Granular Trap Packets14.3 49
Trap SNMP Logic14.4 50
ASCII Conversion14.5 50
RADIUS Dictionary File (Available on Resource Disk)14.6 51
Upgrade Firmware via FTP14.7 51
Technical Support15 53
End User License Agreement16 54

1
NetGuardian 240T/216T Overview1
The NetGuardian has all the tools you need to manage your remote site.
The NetGuardian 240T/216T — The Intelligent RTU for Complete Site Management
The NetGuardian 240T/216T is a RoHS 5/6-compliant, LAN-based, SNMP/DCPx remote telemetry unit. The
NetGuardian has all the tools you need to manage your remote sites, including built-in alarm monitoring, paging and
email capabilities that can eliminate the need for an alarm master.
With the NetGuardian, you can:
·Monitor 40 discrete alarms (16 with 216T G2 Build Option), 32 ping alarms, and up to 8 analog alarms
·Controlremote site equipment via 1 or 5 terminal server ports and up to 2 control relays
·Monitor your remote site from anywhere using the NetGuardian's built-in Web Browser Interface.
·Report alarms to multiple SNMP managers or the T/Mon Alarm Monitoring System.
·Report alarms via T1 WAN or LAN.
·Connect multiple concurrent users via Telnet to telecom switches, servers, radios, PBXs and other
equipment.
·Monitor discrete and analog threshold alarms.
·Ping IP network devices and verify that they're online and operating.
·Optional 7 port 10/100BaseT Switch option.
·Optional 12V or 24V sensor power option for powering external sensors.
·Supports up to 16 D-Wire sensors.
New: The NetGuardian 240T/216T supports serial baud rates up to 115,200, analog readings accurate to within +/-
1%, one 10/100 NICs (isolated), SNMPv2c, SNMPv2c Inform trap, and SNMPv3.
Stand-alone local visibility
You don't need an alarm master unit to monitor your site with the NetGuardian. With the NetGuardian's built-in
Web Browser Interface, you can access the NetGuardian, view alarms and control remote site devices from any
computer anywhere in your network.
24/7 pager and email alerts - no master needed
Out of the box, the NetGuardian supports 24/7 pager and email reporting. Send alarms directly to maintenance
technicians in the field, even when no one's in the office.
Connect via LAN to telecom switches, servers, radios and more
Each of the NetGuardian's five serial ports can be individually configured to serve as a craft port, a channel port or
a TCP or UDP reach-through port, giving you LAN-based terminal server access to up to 5 serial devices.
RADIUS Authentication
Take the security of your alarm remotes to the next level with RADIUS authentication. Now the NetGuardian
240T/216T can interact with your RADIUS server, integrating it as part ofyour enterprise management.

2
Reports to multiple SNMP managers and T/Mon simultaneously
The NetGuardian reports to both the T/Mon Alarm Monitoring System and any SNMP manager. You can
simultaneously forward alarms from the NetGuardian to T/Mon and multiple SNMP managers at multiple IP
addresses. Alarms can also be configured to dispatch to one, some, or all SNMP managers.
Shipping List2
While unpacking the NetGuardian, please make sure that all of the following items are included. If some parts are
missing, or if you ever need to order new parts, please refer to the part numbers listed and call DPS Telecom at
[phone].
NetGuardian 240T: D-PK-NG240 NetGuardian 240T/216T Hardware
-or- NetGuardian 216T: D-PK-NETGT Manual D-UM-NETGT
NetGuardian 240T/216T Resource CD DB9M-DB9F Download Cable 6 ft.
(includes manuals, MIBs, and software) D-PR-045-10-A-04
x8
Ethernet Cable 14 ft. 3/8" Ear Screw
D-PR-923-10B-14 1-000-60375-05
x4
19" Rack Ears Metric Rack Screw
D-CS-325-10A-00 2-000-80750-03

3
x4
23" Rack Ears Standard Rack Screw
D-CS-325-10A-01 1-000-12500-06
x2 x3
Power Connector Plugs for Main Power 3/4-Amp GMT Main Power Fuses
2-820-00862-02 2-741-00750-00
x4
Cable Tie Pads
1-012-00106-00 2-015-00030-00
Optional Accessories3
Telephone Cable 6 ft. NetGuardian SiteMON IP G2
D-PR-045-10A-01 D-PK-CAMRA
(Optional, if ordering modem)
NetGuardian 240T Hinged Pluggable Panel
D-PK-NGPAN-12054

4
216T G2 Build Option4
For a more cost effective solution, this NetGuardian can be ordered as the 216T G2 build option which
does not have the second Amphenol connector thus reducing the number of discrete alarms to 16. All
other features remain the same between the NetGuardian 240T and 216T.

5
Specifications5
Discrete Alarm Inputs: 40 (16 with 216T G2 Build Option)
Analog Alarms: Up to 8
Analog Input Range: (–94 to 94 VDC or 4 to 20 mA)
Analog Accuracy: +/- 1% of actual value
Control Relays: 2(Form C)
Maximum Voltage: 60 VDC/120 VAC
Maximum Current: 1 Amp, AC/DC
Ping Alarms: 32
Protocols: SNMPv1, SNMPv2c, SNMPv3, DCPx, DCPf, TRIP, SNPP
SMTP, TAP, HTTP, FTP, TELNET, ICMP, RADIUS, SSH, SSC,
PPP, Frame Relay
Interfaces: 7RJ45 Ethernet ports
1 RJ11 D-Wire jack
1 RS232 serial port or RJ11 modem port
2 50-pin amphenolconnectors (discreets, controls, and analogs)
1 Craft Port (front panel)
Dimensions: 1.75"H x 17"W x 9.75"D
Mounting: 19" or 23" rack
Weight: 4.1 lbs
Power Input: -48VDC (-36 to -58VDC)
Wide Range: -24/-48VDC (-18 to -72VDC )
Current Draw: 150mA at –48 VDC
Fuse: 3/4 amp GMT for power inputs
Visual Interface: LCD display
10 LEDs
Audible Notification: Alarm speaker
Operating Temperature: 32°–140° F (0°–60° C)
Industrial Operating
Temperature (option): -22°–158° F (-30°–70° C)
Operating Humidity: 0%–95% noncondensing
Build Options: Real-time clock, HTTPS (Secure web browsing and SSH),
Serial port options:RS232, RS485, modem, or 202 modem, 1-4
serial ports, 12V Sensor Power Supply
MTBF: 60 years
Windows Compatibility: Windows XP/2000/Vista/7 32/64 bit
RoHS: 5/6

6
Hardware Installation6
Tools Needed6.1
To install the NetGuardian, you'll need the following tools:
Phillips No. 2 Screwdriver Small Standard No. 2 Screwdriver
Wire Strippers/Cutter PC with terminal-emulating software
(i.e. HyperTerminal)
Mounting6.2
The NetGuardian can be flush or rear-mounted
The NetGuardian mounts in a 19" rack or a 23"rack using the provided rack ears for each size. Two rack ear
locations are provided. Attach the appropriate rack ears in the flush-mount or rear-mount locations shown in
Figure 6.2.1.
Note: Rack ears can be rotated 90° for wall mounting or 180º for other mounting options (not shown).

7
Power Connection6.3
The NetGuardian 240T is powered by two barrier plug power connectors.
Power connectors and fuses
To connect the NetGuardian to a power supply, follow these steps:
1. 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, before making your power
connections.
2. Use the grounding lug to connect the unit to earth ground. The grounding lug is next to the symbol
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; then
insert a battery line to the plug's left terminal and tighten its screw.
4. Insert a fuse into the fuse distribution panel and measure voltage. The voltmeter should read between
–36 and –58VDC (for -48VDC build option) or -18 and -36VDC (-24VDC build option).
5. The power plug can be inserted into the power connector only one way to ensure the correct polarity.
Note that the negative voltage terminal is on the left and the GND terminal is on the right.
6. Insert fuse into the Power A fuse slot. The power LED should be lit green. If the LED is red, the power
connection is reversed. To confirm that power is correctly connected, the front panel LEDs will flash
RED and GREEN, indicating that the firmware is booting up.
7. Repeat steps 1 -6 for Power B connector.

8
LAN Connection6.4
Fig. 5.4.1. Chart of Ethernet and T1 WAN Connections
The NetGuardian 240T has a 10/100 BaseT Ethernet hub for connecting through LAN. To connect the
NetGuardian to the LAN, insert a standard RJ45 Ethernet cable into one of the Ethernet ports.
From the NetGuardian, the connection can be routed via Ethernet to a local subnet of up to 7 devices. Or, as
shown in Figure 5.4.1 above, the connection can be routed through the T1 WAN connector, which sends it through
a router and then on to multiple other PCs (gateways) via LAN in the wider area network.

9
RJ45 Ethernet Connection
8
7
5
6 Transmit Out - (Tx-)
4
3 Transmit Out + (Tx+)
2 Receive In - (Rx-)
1 Receive In + (Rx+)
RJ45 T1 Connection
8
7
5 Transmit Out + (Tx+)
6
4 Transmit Out - (Tx-)
3
2 Receive In + (Rx+)
1 Receive In - (Rx-)
Fig. 5.4.2 Ethernet ports and T1 WAN port pinouts
The pinouts for the Ethernet hub ports and the T1 WAN port are shown in Figure 5.4.2, above.

10
Alarm and Control Relay Connections6.5
Alarm and control relay amphenol connectors
The NetGuardian 240T's discrete alarm inputs, analog channels, and control relay outputs are connected through
two 50-pin connectors labeled "Discretes 1–16 / Analogs 1–4 / Relays 1–2"and "Discretes 17–40" on the back
panel.
Note: Analog channels are a build option for the NetGuardian 240T. Your NetGuardian 240T may not have user-
definable analog inputs.

11
6.5.1 Alarm and Control Relay Connector Pinout Table
Amphenol 1
Discretes 1–16
RTN
ALM
ALM 1
1
26
ALM 2
2
27
ALM 3
3
28
ALM 4
4
29
ALM 5
5
30
ALM 6
6
31
ALM 7
7
32
ALM 8
8
33
ALM 9
9
34
ALM 10
10
35
ALM 11
11
36
ALM 12
12
37
ALM 13
13
38
ALM 14
14
39
ALM 15
15
40
ALM 16
16
41
Analogs 1–4
+
-
ANA 1
21
46
ANA 2
22
47
ANA 3
23
48
ANA 4
24
49
GND
25
50
Controls 1–2
NO/NC
CO
CTRL 1
17/42
43
CTRL 2
19/44
18
FUSE
20/NA
45
Alarm and control relay connector pinout for the 240T/216T

12
Amphenol 2
Discretes 17–40
RTN
ALM
ALM 17
1
17
ALM 18
2
18
ALM 19
3
19
ALM 20
4
20
ALM 21
5
21
ALM 22
6
22
ALM 23
7
23
ALM 24
8
24
ALM 25
9
25
ALM 26
10
26
ALM 27
11
27
ALM 28
12
28
ALM 29
13
29
ALM 30
14
30
ALM 31
15
31
ALM 32
16
32
ALM 33
17
33
ALM 34
18
34
ALM 35
19
35
ALM 36
20
36
ALM 37
21
37
ALM 38
22
38
ALM 39
23
39
ALM 40
24
40
Alarm and control relay connector pinout for the 240T Only
In these two diagrams, you'll see pinouts for the 50-pin amphenolconnectors on the back of your NetGuardian. To
determine your build option, see the silk screen on the back panel of your unit.
*You can set your NetGuardian's controlrelays 1 and 2 for either Normally Open or Normally Closed operation
via a jumper on the NetGuardian PC board. By default, relays are configured for 'Normally Open' operation. For
more information, see the Controls section of this manual.

13
Discrete Alarms6.6
Contact to Ground
–Batt.
Alarm
Dry Contact
–Batt.
GND
Alarm
NetGuardian case NetGuardian case
Note: Make sure that grounds have a common reference—
this is usuallydone bytying grounds together.
GND
Discrete alarm points can connect as a dry contact or a contact to ground
The NetGuardian 240T features up to 40 discrete alarm inputs (16 with 216T G2 Build Option) — also
called "digital inputs" or "contact closures". Discrete alarms are either active or inactive, so they're
typically used to monitor on/off conditions like power outages, equipment failures, door alarms and so
on.
The NetGuardian'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:Asingle wire brings a contact to an external ground, activating the alarm.
You can reverse the polarity of each individual discrete alarm point, so that the alarm is activated when
the contact is open. This is done with a software configuration change.

14
D-Wire Sensor Inputs6.7
The port on your NetGuardian labeled D-Wire supports up to 16 D-Wire sensors. Your NetGuardian powers
and communicates with your D-Wire sensors via simple RJ-11 connection.
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.
Maximum Cable Lengths
Number of Nodes
Spec'd Max (ft)
Number of Nodes
Spec'd Max (ft)
1
600
9
600
2
600
10
600
3
600
11
600
4
600
12
600
5
600
13
600
6
600
14
600
7
600
15
600
8
600
16
600
Maximum Cable Lengths
Note: The DPS Temperature and Humidity Sensor, DPS part number D-PK-DSNSR-12002, occupies two nodes.
6.7.1 Connecting to D-Wire Sensors
Using a standard 6P4C, straight-through RJ-11 cable (part number D-PR-045-10A-01, pinout below),
connect the D-Wire port on the NetGuardian to the In jack on the 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 and D-Wire Sensor RJ-11 jacks
For details about configuring your sensors through the web interface see the Sensors section of this web browser
user manual.

15
Serial Ports6.8
Data port arrangement on the NetGuardian 240T
The NetGuardian's server port provides reach-through terminal server functionality for connecting multiple
simultaneous users to external equipment via Telnet over LAN. This port can function as a proxy connection to an
external device, a craft port, a channel port, a TCP or UDP reach-through port. The NetGuardian can support
simultaneous proxy connections for up to 5 users.
Note: If connecting a NetGuardian DX to the NetGuardian 240T, use cable# D-PR-1032-10B-08 to connect the
serial port to DX IN port of the expansion unit.
1 TX+ (Transmit +)
2 N/C (Not Connected)
3 RX+ (Receive +)
4 GND (Ground)
5 GND (Ground)
6 RX- (Receive -)
7 N/C (Not Connected)
8 TX- (Transmit -)
YostRS-485 RJ45 Connector
1 CTS (Clear to Send)
2 DSR (Data Set Ready)
3 RXD (Receive Data)
4 GND (Ground)
5 GND (Ground)
6 TXD (Transmit Data)
7 DTR (Data Terminal Ready)
8 RTS (Request to Send)
YostRS-232 RJ45 Connector
1 TX- (Transmit -)
2 N/C (Not Connected)
3 RX+ (Receive +)
4 GND (Ground)
5 GND (Ground)
6 RX- (Receive -)
7 N/C (Not Connected)
8 TX+ (Transmit +)
Yost4-Wire 202 Connector
12345
TX
GND
6789
CTS
Pin # Signal Description
1Not connected
2TX Transmit data
3
4
5GND Ground
6Not connected
7CTS Clear to send
8
9Not connected
Recieve Data
Not connected
Request to send
DB9 RS-232
RTS
RX
RTS
RX
Data port pinouts
NetGuardian data ports can be configured for Yost RS-232 or RS-485.These data ports are available as optional
builds on NetGuardian hardware units (Call DPS Sales for more information @ 1-800-693-0351).

16
Optional 66 Block Connector6.9
The 50-pin connectors on the back panel of the NetGuardian can be connected to the optional 25-pair 66 Block
Connector (part number D-PR-966-10A-00).
Note: If connecting to a 50-pair split block, all connections should be made on the two pin columns closest to the
right-hand side of the block or bridge clips should be installed.
Pinout for Optional 66 Block Connector for 240T/216T