DPS Telecom D-PC-293-10A User manual

Visit our website at www.dpstele.com for the latest PDF manual and FAQs.
D-OC-UM04C.14100
December 14, 2004 Firmware: 2.6E

The material in this manual is for information purposes and is subject to change without notice. DPS Telecom shall not be liable for errors contained
herein or for incidental or consequential damages in connection with the furnishing, performance or use of this manual.
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.
© Copyright 2002, DPS Telecom
Revision History
01/31/02 User Manual released.
Supports NetGuardian firmware versions up to 2.6E.
12/14/04 NetGuardian DX User Manual (D-OC-UM04C.14100) released.

1
Table of Contents
Net Guardian Expansion
Table of Contents
Fig. 1 – Up to three Net Guardian Expansions can be added to a Net Guardian 832A, providing 144 additional alarm points.
Visit our website at www.dpstele.com for the latest PDF manual and Net Guardian FAQs.
Overview Chapter 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1.1 Summary of Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Installation Chapter 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.1 Shipping List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2.3 Hardware Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.3.1 Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.3.2 Installation Steps Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.3.3 Mounting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.3.4 Power Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.3.5 Communication Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.3.5.1 Net Guardian Expansion Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.3.6 Discrete I/O Lines (alarms) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.3.7 Fuse Alarm Pins and Control Relays Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . .10
2.3.7.1 Changing Jumper Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2.3.8 Power-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2.4 Software Provisioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
2.4.1 Front Panel Craft Port Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
2.4.2 Provisioning the Expansion Alarm Points . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
2.4.3 Monitoring the Expansion Alarm Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
2.4.4 Saving Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
2.5 Web Browser Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
2.5.1 Logon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
2.5.2 Edit-Base Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
2.5.3 Viewing Base Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Operation Chapter 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
3.1 Front Panel Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
3.2 Display Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

2
Fig. 1.2 – Net Guardian Expansion functional diagram.
1.2 Introduction
The Net Guardian Expansion box is a low cost, self contained device that provides the Net Guardian 832A with
an additional 48 ground activated discrete alarms per unit. With the capability of adding up to 3 Net Guardian
Expansions, at 48 alarm points per unit, an additional 144 discrete alarms to the Net Guardian 832A can be
provided.
To make expansion a simpler and less expensive task, each unit is equipped with dual RS232 ports so that addi-
tional Expansions can be daisy chained to one another. In this way, currently deployed Net Guardian 832As can be
easily expanded.
Overview • Summary of Features
Overview
Chapter 1
Net Guardian 832ANet Guardian 832A
Net Guardian Expansion
Net Guardian Expansion
Net Guardian Expansion
32 Discrete Alarms
8 Analog Alarms
8 Control
48 Discrete Alarms
RS 232
RS 232
RS 232
48 Discrete Alarms
48 Discrete Alarms
A maximum of 3
Net Guardian
Expansion units can
be used in
conjunction with
the Net Guardian 832A
for a total capacity of
176 discrete alarms.
1.1 Summary of Features
• Low cost method of expansion to existing Net Guardian 832A units (SNMP and DCPX versions)
• Gives additional capacity over existing communication lines
• Helps conserve T/MonXM or IAM ports by reporting more alarms to the same address
• 48 ground activated discrete alarms per expansion
• RS232 ports for easy daisy chaining between units
• LED indications of alarms and communications status
• Easy setup

3
Installation • Shipping List
Net Guardian Expansion
D-PC-293-10A
M-M DB9 Expansion connection cable (1 per unit)
D-PR-1028-10A-00
Installation
Chapter 2
2.1 Shipping List
Mounting Kit
2, 23” rack ears 2, 19” rack
ears
3/8” ear screws,
rack screws, and
washers
X 8 X 4
3/4 AMP fuse Pads Zip ties
X 8
User Manual
UM00A.27122
“YourPartners in Network Alarm Management”
Visit our website at www.dpstele.com for the latest PDF manual and FAQs.
UM00A.27122
January 31, 2002 Firmware: 2.6e

4
Physical
Dimensions: 2 3/4" H x 17 1/4" W x 9
1/4" D
Mounting: 19" or 23" rack with
supplied ears
Operating temperature: 0º – 60ºC (32º – 140ºF)
Power input: –43 to –53 VDC
Fuse: 1/4 amp GMT
Current Draw: 140mA
Interfaces: RS232
Protocol: DCPX
Minimum Net Guardian
Firmware version required: v1.5D
Options and Model numbers
Model number: D-PC-293-10A
2.2 Specifications

5
Installation • Hardware Installation
2.3 Hardware Installation
2.3.1 Site Preparation
Tools needed:
• Phillips screwdriver
• Small standard No. 2 screwdriver
• Wire strippers/cutters
Precautions
• Pull fuses on source of -48VDC before connecting power.
• Always observe electrostatic discharge (ESD) precautions.
2.3.2 Installation Steps Overview
• Mount hardware:
Mount Net Guardian Expansion in the rack.
• Connect alarm leads.
• Connect power.
• Provision Net Guardian 832A for Net Guardian Expansion
• Review Net Guardian Expansion status LEDs.

6
Installation • Mounting Instructions
Flush-mount
2.3.3 Mounting Instructions
The Net Guardian Expansion can be mounted in a 19” or a 23” inch rack by using different rack ears for each size.
Attach the appropriate size ears for your rack in the flush-mount or rear-mount locations shown in the figures
below.
Fig. 2.3.3 – The Net Guardian Expansion can be flush or rear-mounted, as shown above.
Note: Rack ears can be flipped 180º for other mounting options not shown.
Rear-mount

7
Installation • Power Connection
2.3.4 Power and Ground Connection
The NetGuardian Expansion offers screw lug barrier plugs for easy and convenient power connection.
Additionally, dual power feeds are available, providing an alternate power source in case backup power becomes
necessary (optional). The expansion units will automatically draw from the alternate power source in the event
the primary power source becomes unavailable. Follow the directions below for connection information.
1. Remove the fuse from the back panel and turn off the power supply when connecting the power from the power
lead.
2. Remove the screw lug barrier plug(s) from the back panel of the NetGuardian Expansion.
3. Connect a -48VDC line to the -48V terminal and a battery ground to the GND terminal of the screw lug (All bar-
rier screws should be seated firmly but not over-tightened so as to nick the bare wire). Repeat for power source
“B” if you have dual power inputs.
4. Push the plug(s) firmly back into their appropriate location.
5. For earth/frame grounding, connect a copper wire with a ring terminal to the grounding post located on the back
panel of the NetGuardian Expansion (DPS recommends at least a 14 gauge wire). Place the ring terminal between
the two nuts and secure the nuts on the grounding post. Connect the other end of the wire to an earth/frame ground.
6. Turn on main power with the NetGuardian Expansion fuse still removed.
7. Connect the black common lead of a volt meter to battery ground and the red lead to -BATT. The meter should
read the battery level (-43 to -53VDC). If not, check your power supply.
8. Do not re-insert the NetGuardian Expanion’s fuse (powering up the unit) until all other connections have been
made.
Note: Observe polarity when connecting battery leads. If using the -48VDC red/black cables supplied with the unit, connect
black to battery GND and red to -BATT. Standard gauge is 20AWG, but may vary between 18-24AWG.
Fig. 2.3.4 - Power screw lug barrier plugs.
Grounding
post
Insert screw lug barriers

8
Installation • Communication Lines
2.3.5 Communication Lines
1. Connect one end of the M-M DB9 cable to reach through port number 7 (of the 8) located on the Net
Guardian back panel.
2. Connect the other end of the M-M DB9 cable to the “DX In” port of the Net Guardian Expansion (See figure
below).
If additional Net Guardian Expansions are to be installed:
3. Connect one end of another M-M DB9 cable to the “DX Out” port in the first Net Guardian
Expansion.
4. Connect the other end of that M-M DB9 cable to the “DX In” port of the second Net Guardian
Expansion.
5. To connect a third Net Guardian Expansion, repeat steps 3 and 4.
Note: The “DX IN” and “DX OUT” ports as well as the Net Guardian’s Data Ports are DCE type ports.
Fig. 2.3.5 - Net Guardian Expansion with communication lines.
From 5
From 3
Male DB9 Pin Male DB9 Pin
To 3From 2
To 2
To 5
Tbl. 2.3.5 - M-M DB9 Expansion Connection cable pinout.
Net Guardian 832A
Net Guardian Expansion Units
M-M DB9 cable (D-PR-1028-10A-00)
M-M DB9 cable (D-PR-1028-10A-00)
Note: Data Port 8 is reserved for a GLD network, an auxiliary Net Guardian LCD and speaker. Call DPS sales for more
information.

9
Installation • Shelf Addressing
To distinguish Net Guardian Expansion Shelf 1 (and Shelves 2 and 3 if applicable), a DIP switch address setting is
used. The DIP switches use binary settings and are addressed as 1, 2, and 3 respectively. To verify the shelf
address, push and hold the ACK button on the front panel. The LEDs will indicate the shelf address (i.e. either 1,
2, or 3).
2.3.5.1 Net Guardian Expansion Addressing
Net Guardian Expansion DIP switch position
Shelf 1
Shelf 2 (if applicable)
Shelf 3 (if applicable)
Tbl. 2.3.5.1 - Net Guardian Expansion shelf addressing.
Fig. 2.3.5.1 - Shelf addressing DIP switch close-up.
On (down)
123(Not used)
Off (up) Off (up)
Off (up) On (down) Off (up)
On (down) On (down) Off (up)
4 (Not used)
Off (up)
Off (up)
Off (up)
ON
OFF
Note: If you only have one Net Guardian Expansion, it must be shelf 1. If a second Net Guardian Expansion is
used, it must be shelf 2, etc.
2.3.6 Discrete I/O Lines (alarms)
Discrete alarm points connected to the Net Guardian Expansion units are essentially single-lead signals referenced
to ground. The B-side of each alarm point is internally wired to ground, so either a single wire bringing a contact
to ground or a dry closure with the second lead connected to the B-side will be sensed as an alarm signal.
Tbl. 2.3.6 - Net Guardian Expansion discrete alarm points.
Discretes 1-24
BABA
ALM 1 126
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
ALM 17 17 42
ALM 18 18 43
ALM 19 19 44
ALM 20 20 45
ALM 21 21 46
ALM 22 22 47
ALM 23 23 48
ALM 24 24 49
Discretes 25-48
38ALM 25
ALM 26
ALM 27
ALM 28
ALM 29
ALM 30
ALM 31
ALM 32
ALM 33
ALM 34
ALM 35
ALM 36
BA BA
1
2
3
4
5
6
7
8
9
10
11
12
26
27
28
29
30
31
32
33
34
35
36
37
ALM 37
ALM 38
ALM 39
ALM 40
ALM 43
ALM 44
ALM 45
ALM 46
ALM 47
ALM 48
13
14
15
16
17
18 43
19
20
21
22
23
24
39
40
41
42
44
45
46
47
48
49
ALM 41
ALM 42

10
Installation • Fuse Alarm Pins and Control Relays Pinouts
2.3.7 Fuse Alarm Pins and Control Relays Pinouts
Fuse Alarm
The fuse alarm relay is Normally Open. If the fuse blows, the fuse alarm (FA) LED will light and the fuse alarm
relay (FA RLY) will de-energize (close). The relay is found on pins 13 and 25 of the DB 25 connector on the back
panel. Connect these pins to other alarm monitoring equipment to give visibility of an equipment failure.(See fig-
ure 2.3.7 below). Refer to Table 2.3.7 for pinout information.
Control Relays
Controls can be used for starting or stopping equipment, unlocking doors, and other functions. Connect control
relays to the 25-pin connector on the back panel. Refer to Table 2.3.7 for control relay connection pinouts.
The default setting for the relays is Normally Open (N/O). To change the settings to Normally Closed (N/C), you
must reset the circuit board jumpers. For instructions on changing jumper settings, see Section 2.3.7.1.
1
13
14
25
8 7 6 5 4 3 2
21 20 19 18 17 16 15
Fuse Alarm Relays Pins 1-8 Common
Pins 14-21 N/O & N/C
Fig. 2.3.7 - The Fuse Alarm relay is found on pins 13 and 25, and the Control Relay pins are numbers 1-8
Male D B 25 Pin
D escription
1
Relay 1 Common
2
Relay 2 Common
3
Relay 3 Common
4
Relay 4 Common
5
Relay 5 Common
6
Relay 6 Common
7
Relay 7 Common
8
Relay 8 Common
13
Fuse Alarm Relay Pin 1
14
Relay 1 (N/C orN/O)*
15
Relay 2 (N/C orN/O)*
16
Relay 3 (N/C orN/O)*
17
Relay 4 (N/C orN/O)*
18
Relay 5 (N/C orN/O)*
19
Relay 6 (N/C orN/O)*
20
Relay 7 (N/C orN/O)*
21
Relay 8 (N/C orN/O)*
25
Fuse Alarm Relay Pin 2
Tbl. 2.3.7 - Alarm and control relays pinout information
* This pin is user selectable by an internal jumper - the default is always Normally Open.

11
Installation • Changing Jumper Options
2.3.8 Power-up
Now that all alarm and communications wiring is complete, power up the unit by installing the fuse in the back
panel.
2.3.7.1 Changing Jumper Options
You can change the settings for analog alarm inputs and control relays by resetting the jumpers on the
NetGuardian's circuit board. To open the unit and expose the circuit board, remove the screws from the top of the
NetGuardian and lift the top cover off. Figure 2.3.7.1 shows the circuit board and the location of the adjustable
jumpers.
By default, all the adjustable jumpers are open, except for the speaker jumper. For control relay jumpers, the open
position corresponds to normally open operation, and the closed position corresponds to normally closed operation.
Fig. 2.3.7.1 - Control Relays on the NetGuardian DX circuit board

12
Installation • Software Provisioning
2.4 Software Provisioning
For front panel craft port configuration, see section 2.4.1. For Web Browser configuration via LAN, see section
2.5.
2.4.1 Front panel craft port configuration
Once the Net Guardian Expansion is connected to the Net Guardian 832A, the Net Guardian 832A must be con-
figured to access the Net Guardian Expansion functions. Connect a computer terminal to the front panel craft port
using a standard download cable (DPS part number D-PR-045-10B-04).
1. Ensure the connecting computer’s settings matches the Net Guardian 832A (9600, N, 8, 1) and
connect a DB9 serial cable to the DB9 connector on the Net Guardian front panel labeled
“CRAFT.”
2. Open up a terminal emulation program such as HyperTerminal, and connect to the Net Guardian direct to
COM 1 (or whatever COM port you are using).
3. Type: ‘DPSCFG’ <enter>
4. The Net Guardian will respond Password:
5. Type: ‘dpstelecom’ <enter> (Factory default) - or existing password if applicable.
6. The Net Guardian main menu will appear.
7. Type ‘C’ for Configure.
8. Type ‘E’ for Edit.
9. Type ‘P’ for Port.
10. Type ‘O’ for Options.
11. Select ‘N)GDdx’
12. Enter the number of Net Guardian Expansions installed (e.g. 1, 2, or 3) and press ENTER.
The number of NGDdx units should now reflect the number you just entered.
13. Press ESC twice to back up to the E)dit menu. The Next step is to provision the 48 discrete points for each
Net Guardian Expansion.
Fig. 2.4.1 – Enter the number of expansion units attached to the Net Guardian.
Password: **********
NetGuardian v1.5D.0099
C)onfig P)roxy D)ebug e(X)it
E)dit M)onitor P)ing S)tats R)eset modem (ESC) ? E
s(Y)stem L)ogin P)orts pa(G)ers A)larms R)elays
a(N)alogs p(I)ng info T)imers D)ate/time n(V)ram (ESC) ? P
E)thernet M)odem C)raft D)ata O)ptions (ESC) ? O
NGDdx Units : 0
GLD Units : 0
N)GDdx G)LDs (ESC) ? N
NGDdx Units (0-3) : 2
NGDdx Units : 2
GLD Units : 0
N)GDdx G)LDs (ESC) ?

13
Installation • Software Provisioning
2.4.2 Provisioning the Expansion Alarm Points
Now that the Net Guardian is configured for the correct number of expansions connected to it, the 48 discrete
alarm points on each expansion can be provisioned with a description, polarity, pager IDs, and other options.
1. From the E)dit menu, select A)larms and then E)xpansions to edit the Expansion alarm points.
2. Each Net Guardian Expansion reports it’s alarms on a separate display. Display 12 corresponds to the alarm
points in Expansion shelf 1, display 14 corresponds to points in Expansion shelf 2, and display 16 corresponds
to points in Expansion shelf 3 (see section 3.2 for display mapping details). Enter display 12 to edit the first
Expansion’s points. A list of the first 16 alarm points will be shown.
3. Enter an Alarm ID number to edit it’s information.
4. From the menu that appears, select D)escription to enter a description of the alarm point (up to 23 Characters).
5. Select po(L)arity to toggle the condition required to trigger an alarm. When the polarity is set to “Nrm,” the
alarm is wired as a normally open contact which must be closed to trigger an alarm. When the polarity is set to
“Rvs,” the alarm is wired as a normally closed contact which must be opened to trigger an alarm.
6. Select T)rap to toggle (Yes/No) sending an SNMP Trap when that alarm occurs.
7. Select P)ri PAger and S)ec. Pager to enter the pager ID for the primary pager and secondary pager. Refer to
the pa(G)ers section to determine which pager IDs correspond to which device/pager. (Other pager options
include e-mail notification of an alarm, or sending Traps to multiple SNMP managers.)
8. Repeats the steps above until all 48 alarm points for each expansion are provisioned.
Fig. 2.4.2 – Provision the Expansion points from the E)dit, A)larms, E)xpansions menu.
s(Y)stem L)ogin P)orts pa(G)ers A)larms R)elays
a(N)alogs p(I)ng info T)imers D)ate/time n(V)ram (ESC) ? A
B)ase E)xpansions (ESC) ? E
Active Displays : 12, 14, 16
Display Number : 12
SNMP .Pager.
ID Description Pol Trap Pri Sec
1 DOOR ALARM Nrm Y 1 2
2 COMMERCIAL POWER OUT Rvs Y 1 2
3 UPS GNRTR RUNNING Nrm Y 1 4
4 RECTIFIER 1 Rvs N 2 3
5 RECTIFIER 2 Rvs Y 3 4
6 ICY CONDITION Nrm N 5 1
7 GE2 DE-ICER 1 ON Nrm Y 4 6
8 GE2 DE-ICER 2 ON Nrm Y 4 6
9 GE2 DE-ICER 3 ON Nrm Y 4 6
10 GE2 DE-ICER 4 ON Nrm Y 4 6
11 Nrm N 0 0
12 Nrm N 0 0
13 Nrm N 0 0
14 Nrm N 0 0
15 Nrm N 0 0
16 Nrm N 0 0
Alarm ID (ESC exit, TAB next page) : 1
1 DOOR ALARM Nrm Y 1 2
D)escription po(L)arity T)rap P)ri.Pager S)ec.Pager (ESC) ?

14
Installation • Software Provisioning
2.4.3 Monitoring the Expansion Alarm Points
Now that the Expansion points have been provisioned with all of the appropriate information, they may be moni-
tored. (This is helpful to verify the installation.)
1. From the main menu, select C)onfig, then M)onitor, then A)larms, then E)xpansions.
2. Enter the display number that you would like to monitor (12=Expansion shelf 1, 14=shelf 2, and 16=shelf 3,
see section 3.2 for display mapping details).
3. The list of alarms and their status will be displayed, 16 alarms at a time. Press any key to scroll to the next
group of 16 alarms.
4. press ESC to exit the monitoring list.
Fig. 2.4.3 – Monitor the Expansion points from the M)onitor, E)xpansions menu.
s(Y)stem L)ogin P)orts pa(G)ers A)larms R)elays
a(N)alogs p(I)ng info T)imers D)ate/time n(V)ram (ESC) ? A
B)ase E)xpansions (ESC) ? E
Active Displays : 12, 14, 16
Display Number : 12
ID Description Status
1 DOOR ALARM Alarm
2 COMMERCIAL POWER OUT Clear
3 UPS GNRTR RUNNING Clear
4 RECTIFIER 1 Clear
5 RECTIFIER 2 Clear
6 ICY CONDITION Clear
7 GE2 DE-ICER 1 ON Clear
8 GE2 DE-ICER 2 ON Clear
9 GE2 DE-ICER 3 ON Clear
10 GE2 DE-ICER 4 ON Clear
11 Clear
12 Clear
13 Clear
14 Clear
15 Clear
16 Clear
ESC to exit Any key to continue
2.4.4 Saving Changes
After are provisioning information has been entered, you must write the changes to NVRAM.
1. Type ‘V’ for n(V)ram from the E)dit menu.
2. Type ‘W’ to W)rite the changes into memory.
3. Once this is completed, reboot the Net Guardian.The configuration will not take effect until the Net Guardian
is rebooted.

15
Installation • Web Browser Configuration
2.5 Web Browser Configuration
The Net Guardian offers Web Browser configuration for easy and convenient setup of the
discrete alarms. The Net
Guardian supports Internet Explorer versions 4.0 and up and Netscape Navigator versions 4.7 and up.
2.5.1 Logon
1. After connecting to the Net Guardian’s IP address, enter your password and click Submit. (factory default pass-
word is “dpstelecom”) (See figure 2.5.1)
2. In the main menu there is a Monitor menu button and an Edit menu button. Most of the software configuration
will occur in the edit menu.
Fig. 2.5.1 - Enter your password to configure and monitor your Net Guardian’s discrete alarms using the Web
Browser feature.

16
Installation • Web Browser Configuration
2.5.2 Edit - Base Alarms
All 48 discrete alarms (per unit) can be configured using this menu. Description of the alarm point, polarity
(nrm/rev), whether to use an SNMP Trap or not; and the primary/secondary pager to use report the alarm are con-
figured in this submenu.
1. From the Edit menu select “Base Alarms”. (See figure 2.5.2)
2. Enter a description of each alarm being utilized.
3. Set the Reverse (polarity). Normal = contact closure is an alarm. If the Reverse option is selected, the alarm is
clear when closed.
4. Set the Trap. Trap toggles the SNMP information. Selecting the box = Send Trap, leaving the box blank = Don’t
Send. This allows you to designate if an SNMP trap is to be sent when an alarm condition exists.
5. Set the Primary and Secondary Pagers. This allows you to designate pagers. The Net Guardian 832A will issue
one call to the primary pager device followed by one call to the secondary pager device. Enter a pager ID from
the pager list.
Note: The pager device can be an ASCII terminal, T/MonXM element manager or IAM element manager, E-mail, or multi-
ple SNMP managers as well as an alpha or numeric pager.
Fig. 2.5.2 - Configure the 48 discrete alarms (per unit) from the Base Alarms screen.
Select
the Base
Alarms
screen

17
Installation • Web Browser Configuration
2.5.3 Viewing Base Alarms
This selection provides the status of the system’s Base Alarms by indicating if an alarm has been triggered.
Under the “State” heading, the word “Alarm” will appear in red if an alarm has been activated.
Fig. 2.5.3 - View the status of the Base Alarms from the Monitor-Base Alarms screen.
Select
the Base
Alarms
screen

18
Tbl. 3.1 - Net Guardian Expansion LED indications.
Operation • Front Panel Functions
Operation
Chapter 3
3.1 Front Panel Functions
Fig. 3.1 – The Front panel displays alarm and communication status.
Label Descriptions
1. ACK button. The ACK button will acknowledge any new alarms (change of state (COS) alarms). It
will also cause the shelf address (determined by the back panel DIP switch) to be displayed by
LEDs 1-3 when it is held down.
2. Front panel LEDs. See table below for LED indications.
LED STATUS DESCRIPTION
CFG Flashing Red
Flashing Green
Invalid Shelf Address, check back panel DIP switch setting.
Shelf Address set correctly.
LNK Solid Green
Flashing Green/Red Data Transmit/Receive on primary RS232 port (DX IN).PRI
12
SEC Flashing Green/Red Data Transmit/Receive on secondary RS232 port (DX OUT).
Alarms
1-8
Green = Banks
Red = Points
A green flash indicates the point bank number (1-6). A point
bank is comprised of 8 alarm points.
A red flash after the green point bank number flash indi-
cates which of the 8 alarms in that point bank are in an
alarmed state (see table below).
Note : The Expansion alarm points are also displayed on the Net
Guardian’s LCD.
Note: The silk screen designations “DX IN” and DX OUT” do not indicate communication direction.
Point Bank
Alarm Points
1
2
3
1-8
9-16
17-24
4
5
6
24-32
32-40
41-48