DPS Telecom NetGuardian 224A User manual

USER MANUAL
NetGuardian 224A
May 30, 2017
Visit our website at www.dpstelecom.com for the latest PDFmanual and FAQs.
D-PK-NG224-12003
D-UM-NG224

© 2017 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 materialin 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
May 30, 2017
March 23, 2017
October 24, 2016
July 19, 2016
April 27, 2015
March 10, 2015
December 23, 2014
November 18, 2014
November 22, 2013
November 13, 2013
November 8, 2013
October 10, 2013
October 4, 2013
October 3, 2013
September 6, 2013
August 20, 2013
August 15, 2013
August 14, 2013
Secure Web Feature
Added History Log Format and Operation Section
Added HVAC Monitor Mode
Push-to-talk function added
Timers Update
Minor Browser Updates
Updated User Analogs, minor edits
Updated Timers Page
Added Conditional Halt, ~evalMt & corrected ~evalMn in Provisioning
Sensors
Added ~intCnt mode description
Fixed timing on ~evailMn mode to 15 sec
Modbus and Sensor clarifications
Sensor slot equation explanation, tables and examples
Added images and instructions for Modbus functionality
Updated Images, Specifications, Shipping List & Misc. Details for G2
Updated Images & Misc. Details
Updated Specifications and Images
Initial Release

Contents
Visit our website at www.dpstelecom.com for the latest PDF manual and FAQs
NetGuardian 224A Overview1 1
Specifications2 3
Shipping List3 4
Optional Shipping Items - Available by Request3.1 7
Installation4 8
Tools Needed4.1 8
Mounting4.2 8
Power Connection4.3 9
NetGuardian 224A Front Panel5 10
NetGuardian 224A Back Panel6 11
Amphenol Pinouts6.1 11
Pluggable Connectors6.2 11
66Block diagrams6.3 12
Quick Start: How to Connect to the NetGuardian 224A7 14
...via Craft Port (using TTY Interface)7.1 14
...via LAN7.2 20
TTY Interface8 21
Configure Serial Port via TTY8.1 22
Quick Turn Up9 22
How to Send Email Notifications9.1 23
How to Send SNMP Traps9.2 25
Provisioning Menu Field Descriptions10 27
System10.1 28
History Log Format and Operation10.1.1 30
User Profiles10.2 31
Ethernet10.3 33
Serial Port10.4 34
SNMP10.5 35
Notifications10.6 36
Notification Settings10.6.1 36
Schedule10.6.2 38
Alarms10.7 39
Controls10.8 40
User Analogs10.9 41
Sensors10.10 42
HVAC Monitoring10.10.1 44

Script Sensors10.10.2 45
Ping Targets10.11 47
System Alarms10.12 48
Timers10.13 49
Date and Time10.14 50
Monitoring via the Web Browser11 51
Alarms11.1 51
Controls11.2 52
Sensors11.3 53
User Analogs11.4 54
Ping Targets11.5 55
System Alarms11.6 56
Graph11.7 57
Device Access Descriptions12 58
Backup Configuration13 59
Firmware Upgrade14 60
Reference Section15 61
Display Mapping15.1 61
System Alarms15.2 66
SNMP Manager Functions15.3 67
SNMP Granular Trap Packets15.4 68
Frequently Asked Questions16 69
General FAQs16.1 69
SNMP FAQs16.2 70
Technical Support17 71
End User License Agreement18 72

1
NetGuardian 224A Overview
1
The NetGuardian 224A
Could you estimate how much money your company has invested in your remote shelter, IT server
room, or data center? How much is your network uptime worth to you? These questions might be
difficult to answer, but monitoring your valuable IT equipment certainly doesn’t have to be.
You need a compact, simple, and reliable device to monitor basic environmental conditions (like
temperature, humidity, smoke...) around your valuable equipment. Without this basic visibility, it’s just a
matter of time before your investment in your server room is seriously damaged.
·24 Discrete AlarmInputs (TTL)
·4 D-Wire sensor ports
·2 Form C Control Relay Outputs
·Fast, integrated, and secure Web browser
·32 ping targets to monitor other devices on the network
Meet the NetGuardian 224A
This small device keeps tabs on all the environmental levels that affect your servers, phone closets,
data centers, and other equipment locations. The 24 discrete alarms on the back panel are used to
monitor dry contacts, such as motion sensors, UPS, smoke detectors, flood sensors, AC and room
entry.
What’s the current room temperature? When was the last time someone entered the room? Get all of
this information - right from your network PC.
Don’t wait until the day your AC unit fails and your server closet overheats to start protecting your
gear. This small, 1RU device alerts you of changing conditions 24 hours a day, 7 days a week, either to
your cell or SNMP manager. The NetGuardian 224Ais the cost-effective way to stay proactive in your
monitoring.

2
Common Applications for the NetGuardian 224A
The NetGuardian 224A reports alarms as SNMP traps over LAN and supports DCP polling over RS-232, RS-485 or
LAN. The NetGuardian 224A supports simultaneous SNMP and DCP operation.
The NetGuardian 224A supports both LAN and serial port connectivity. The LAN connection and serial port can be
used at the same time to support simultaneous SNMP and DCP alarm reporting. However, only one DCP channel
can be used, therefore the NetGuardian 224A cannot simultaneously report DCP over LAN and DCP over serial port
connection.
In addition to its 24 discrete input points, the NetGuardian 224A has 2 control relays, both form C, for user defined
NO/NC connections, 2 analogs, and dwire. The control relays allow network administrators to respond remotely to
threats to system integrity. Using the control relays, network administrators can turn on backup generators, open
doors and gates for emergency access, reboot equipment, exhaust fans, or perform other functions. The
NetGuardian 224A also allows you to reverse the logic state of the alarm on a point by point basis for discrete
alarms.
Another feature of the NetGuardian 224A is user-defined alarm qualification times. This will allow you to clearly
distinguish momentary status changes from serious problems.

3
Specifications
2
Hardware
Dimensions:
17.026" W x 1.720" H x 5.636" D
Mounting:
19” or 23” Rack
Weight:
3.5 lbs (1.56 kg)
PowerInput:
24/48VDC (18 to 60
VDC)
Polarity Insensitive
PowerSupply Output:
+24VDC, 1 amp
+12VDC, 1 amp
3 Current
Draw:
100mA @ 48 VDC
200mA @ 24 VDC
Fuse:
3/4Amp GMT Fuse
Visual Interfaces:
8
Front PanelLEDs
6
back LED's
1 Hardware Interfaces:
1
DB50(
Discrete Inputs)
1 RJ45 10/100BaseTEthernet
1 RS-232 Serial
(optional USB serial)
1 USB Craft Port
4
RJ
-12
D
-Wire sensor port
1 Pluggable port for Controls
2 RJ45 for analongs/power supply
Discrete Alarm Inputs:
24 (TTL, 5V biased)
Analogs:
2
Input Range:
-92 to +92VDC or 4 to 20mA
4 Analog Accuracy:
±1% of Analog Range
ControlOutputs:
2 Form C
Relays
Max Voltage:
60 VDC/120VAC
Max Current:
1A AC/DC
Operating Temp:
32° to 140°F (0° to 60°C)
1 Industrial Operating Temp:
-22° to158°F (-30° to 70°C)
Operating Humidity:
0% to 95% non-condensing
MTBF:
60
Years
RoHS:
RoHS 5/6
Approved
Software
Downloadable Firmware:
Yes
Built-in Web Interface:
Yes
Browser Support:
IE9, IE10, Firefox, Chrome
Protocols:
HTTPS,DCPx, TELNET, HTTP,Email
SNMP Support:
V1,V2c, V3
1 D-Wire Sensor Support:
Temp, Temp/Humidity, Temp/Airflow
Ping Alarms:
32
Note:
1
Valid if
hardware option
is
included.
2Minimum lengths
determined with TTL voltage level alarms. Actual distance mayvary.
3
Current measured atrated voltage with all controls latched and all alarms triggered
.
4
See analog section in manual for detailed analog accuracybreakdown.
* This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when the equipmentis operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, maycause harmful
interference to radio communications. Operation of this equipment in aresidential area is likelyto cause harmful interference in which case the user will
be required to correct the interference at his own expense.
Secure Web:
TLS v1.2 and AE
S128 with built in self signed certificate by DPSTelecom for 128bit key exchange

4
Shipping List
3
Please make sure all of the following items are included with your NetGuardian 224A. 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 224A
D-PK-NG224
NetGuardian 224AResource CD
NetGuardian 224AUser Manual
D-UM-NGDIN
6 ft. USB Download Cable
D-PR-046-10A-06
x 2
x 2
3/4-Amp GMT Fuses
2-741-00750-00
Locking RIA Connector (Main Pwr)
2-820-00862-02
6-Pin Pluggable Phoenix Connector (Controls)
2-821-10635-00
14ft. Ethernet Cable
D-PR-932-10B-14
x 2
x 2
23" Rack Ear
D-CS-325-10A-01
19" Rack Ear
D-CS-325-10A-00

5

6
x 8
x 4
3/8" Ear Screws
1-000-60375-05
Metric Rack Screws
2-000-80750-03
x 4
Two Standard Rack Screws
1-000-12500-06
Pads
2-015-00030-00

7
Optional Shipping Items - Available by Request3.1
Small WAGO connector
2-802-01020-00

8
Installation
4
Tools Needed4.1
To install the NetGuardian 224A, you'll need the following tools:
Phillips No. 2 Screwdriver Small Standard No. 2 Screwdriver
PC with terminal emulator,
such as HyperTerminal
Mounting4.2
The NetGuardian 224A can be flush or rear-mounted
The NetGuardian 224A 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).

9
Power Connection4.3
The NetGuardian 224A uses single or dual (Optional) power inputs, powered through two barrier plug power
connectors.
NetGuardian 224A Power Terminals and Fuses
To connect the NetGuardian 224A to a power supply:
1. Locate the metal grounding lug next to the symbol . Use the grounding lug to connect the unit to earth
ground.
2. Insert the eyelet of the earth ground cable between the two nuts on the grounding lug (Ground cable not included).
3. Choose a barrier plug power connector to attach your power cable to. One plug is used for main power and the
other is used for backup power. Both plugs are interchangeable so it does not matter which plug you select. Each
plug's right terminal is Ground and its left terminal is Battery Lead.
4. Insert a battery return into the power connector plug's right terminal (+) and tighten the screw.
5. Insert a battery lead to the plug's left terminal (-) and tighten its screw.
6. Insert fuse into the fuse distribution panel.
7. Check the power status LED for polarity. The LED will be off if polarity is wrong, and green if it is correct.
8. Measure voltage. Connect the black cable onto the ground connector of your Digital Voltage Meter (DVM) and red
cable onto the other connector of your DVM. The voltmeter should read between the values listed on the silk
screen next to the power connector.
9. Insert the local fuse 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 (+) terminal is on the right.
10.Verify that the LED is lit. To confirm that power is correctly connected, the front panel status LED will flash
GREEN and RED, indicating that the firmware is booting up.

10
NetGuardian 224A Front Panel
5
NetGuardian 224A Front Panel
LED
Status
Description
Power
Solid Green
Power Supply OK
Off
No Voltage (or) Power Leads Reversed
FA
Solid Red
Blown Fuse
Off
Fuse OK
Status
Flashing Green
Application Running
Flashing Red
Bootloader Running
Alarm
Flashing Red
New Alarm
Solid Red
Standing Alarm Acknowledged via DCP poll
Off
No Alarms
Serial
Flashing Green
Data Transmitted on Serial Connection
Flashing Red
Data Received on Serial Connection
Power
(Lamp)
Solid Green
Processor has power
Off
Processor does not have power
USB
Flashing Green
Data Transmitted over USB
Flashing Red
Data Received over USB
D-Wire
Solid Green
At least 1 dwire enabled, no alarm
Flashing Green
Standing acknowledged alarm (Threshold)
Flashing Red
New Alarm
Off
No D-Wire Alarms
Lnk
Solid Green
LAN Connected
Off
LAN Not Connected
LAN
Flashing Yellow
Activity over Ethernet Connection
Off
No Activity
100BT
Solid Green
LAN Connection Speed is 100BaseT
Off
LAN Connection Speed is 10BaseT
Analog
Solid Green
Analogs enabled, no alarm
Solid Red
Standing acknowledged alarm (Threshold)
Flashing Red
New Alarm
Off
No Analogs enabled
Relay
Solid Green
1 or more relays latched
Flashing Green
New relay latched or released
Off
All relay off
Front Panel LED Descriptions

11
NetGuardian 224A Back Panel
6
Amphenol Pinouts6.1
If your unit has only one amphenolconnector, your controls are pluggable. See next section for wiring.
For alarms 1-24, the inputs are TTL 5V biased.
Pluggable Connectors6.2
Ifyour controls use a pluggable connector, attach your wires into the included screw-down 6-pin phoenixconnector. Refer to
the labels on the unit.
If your controls have an amphenol connector, refer to previous section.

12
66Block diagrams6.3
66 block pinout for Amphenol 1 (TTL Discretes 1-24)

13
66 block pinout for Amphenol 2 (Controls 1-2)

14
Quick Start: How to Connect to the NetGuardian 224A
7
Most NetGuardian 224A users find it easiest to give the unit an IP address, subnet and gateway through the front
craft port (TTY interface) to start. Once these settings are saved and you reboot the unit, you can access it over LAN
to do the rest of your databasing via the Web Browser interface.
Alternative option: You can skip the TTY interface by using a LAN crossover cable directly from your PC to the
NetGuardian 224A and access its Web Browser.
...via Craft Port (using TTY Interface)7.1
NetGuardian 224A Craft Port
Use the front panel craft port to connect the NetGuardian 224A IT to a PC for onsite unit configuration. To
use the craft port, connect the included DB9 download cable from your PC's COM port to the craft port.
Note: The following images display the setup process done in Windows XP.
The following steps will occur the first time any DPS USB equipment is used on this PC. If you've used a
different DPS USB device before and have installed the DPS USB drivers, then skip to Step 9.
When you first connect the NetGuardian 224A to your PC via USB, a "Found New Hardware" message will
appear:
1. Click the "Found New Hardware" message/icon to launch the "Found New Hardware Wizard".

15
2. Select "Install from a list or specific location (Advanced)"
3. Click "Next >"
4. Select "Search for the best driver in these locations."
5. Insert NetGuardian 224A Resource Disc (CD) into your PC.
6. Click "Browse"

16
7. Select the "Driver" folder of your NetGuardian 224A Resource Disc Disc (CD) and click "OK"
The following message will confirm installation of a new "USB Communications Port"
8. Click "Finish" to close the Wizard.
Now that the driver has been installed, a new COM port is being emulated on your PC. Before using
hyperterminal, you must confirm the identity of that new COM port (COM1, COM2, COM3...) in the Windows
Device Manager.