BURK Technology Plus-X VSWR User manual

Instruction
Manual
Rev A (Firmware v.1.0.7)
Plus-X VSWR

ii
If you encounter problems during installation or need additional assistance
getting started, contact Burk Technical Support.
Telephone [phone]
If any parts are not present when you unpack the box(es), please contact
Burk Technology sales department.
Telephone [phone] x700, or
Email [e-mail]
Copyright©2019
Burk Technology, Inc. All rights reserved. Information in this manual is
subject to change without notice

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TABLE OF CONTENTS
Using This Manual ...........................................................................................................................................1
Before You Begin .............................................................................................................................................1
Introduction.....................................................................................................................................................2
Operation Overview .................................................................................................................................2
Control Relays and Interlock Circuits ................................................................................................2
Cascaded Operation ..........................................................................................................................2
Connections, Controls and Indicators ......................................................................................................3
Front Panel ........................................................................................................................................3
Rear Panel .........................................................................................................................................4
Monitoring and Control............................................................................................................................7
Website Interface..............................................................................................................................7
Arcturus and ARC Plus.......................................................................................................................7
Firmware Updates.............................................................................................................................7
Installation .......................................................................................................................................................8
Unpacking..........................................................................................................................................8
Compatibility .....................................................................................................................................9
Network Connectivity........................................................................................................................9
Log on for the First Time ...................................................................................................................9
Meter Input Wiring.................................................................................................................................13
Status Input Wiring.................................................................................................................................14
Control Relay Wiring...............................................................................................................................14
Software Configuration ..........................................................................................................................14
Adding the Plus-X VSWR to the Arcturus or ARC Plus .....................................................................15
Operation.......................................................................................................................................................18
Settings ...................................................................................................................................................18
Verifying/Setting Network Connections..........................................................................................18
Configuration...................................................................................................................................19
Interlock Status ...............................................................................................................................25
Channel Values .......................................................................................................................................26
Technical support ..........................................................................................................................................27

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USING THIS MANUAL
This manual is best viewed as a .pdf on a computer or tablet. The manual has many hypertext links to help
you get to the section you need. Most of the initial setup requires a web browser, and keeping a copy of the
manual in .pdf form on the same machine is very helpful.
The .pdf file has bookmarks to assist with navigation. You
should have a current copy of Adobe Reader on your
computer and have the Bookmarks enabled. The most
recent version of Adobe Reader can be downloaded at
http://get.adobe.com/reader/.
To enable bookmarks, press and expand the desired
section by pressing .
You can also jump directly to a section in the TABLE OF
CONTENTS. Just click on the section or page number to go
directly there.
Take a few minutes to familiarize yourself with the
organization of this manual, as it will likely save time later when you need to find a specific piece of
information quickly. Throughout the manual, you will find hypertext links like this: INSTALLATION. Ctrl-click
on the link to go directly to the named section.
Here is a quick set of links to the major sections of the manual:
TABLE OF CONTENTS Fully expanded table of contents useable in .pdf or printed form
INTRODUCTION Brief overview of Plus-X VSWR
INSTALLATION Hardware installation and input/output connections
OPERATION A web browser is used to operate the unit
The manual contains several instances of user input. Text between < > symbols are user input fields. You
should put your input data between the < > symbols but do not include the < > symbols.
BEFORE YOU BEGIN
To make getting started simpler, it is recommended that you read the INTRODUCTION and become
familiar with Plus-X VSWR controls, indicators, and terminology before proceeding to INSTALLATION.

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INTRODUCTION
The Plus-X VSWR is a fully autonomous system that reduces risk to your investment in RF combiners, transmission
lines and antenna systems by fast interrupt of transmitter interlocks that prohibit RF power output. This system
simultaneously monitors forward and reflected power on up to four transmission lines and continuously updates
Voltage Standing Wave Ratio (VSWR) calculations. The Plus-X VSWR takes immediate action to interrupt
transmitter RF output if a user-defined threshold is exceeded for either reflected power or VSWR depending on
which parameter the user prioritizes for setting a fault.
Plus-X VSWR can be integrated with Arcturus or ARC Plus as well as combined with other Plus-X devices in your
system for comprehensive monitoring and remote control of your entire operation.
Even without a connection to Arcturus or ARC Plus, the Plus-X VSWR continues to provide full interrupt service.
Redundant relay outputs eliminate single point relay failures and “Three strike” logic provides quick recovery from
transient events maximizing uptime while reducing risk from actual system faults.
OPERATION OVERVIEW
CONTROL RELAYS AND INTERLOCK CIRCUITS
The Plus-X VSWR is equipped with meter inputs, a status input, and control relays that either open or close
external transmitter interlock circuits. The meter inputs are used to monitor forward and reflected power on each
transmission line (up to four lines per Plus-X VSWR). These signals are converted to power measurements via a
user calibration factor stored for each power sensor. The power measurements are used to calculate VSWR for
each transmission line.
The Plus-X VSWR can be set to monitor either reflected power or VSWR for each transmission line. If the
measured value exceeds a user defined threshold, the control relay pair assigned to that transmission line will
interrupt the interlock. The control relays can operate in normally closed or normally open configuration
depending on how the user wants to control the transmitter interlock circuit. By appropriately opening or closing
the Control Relay, the Plus-X VSWR can interrupt the RF signal flow for the affected transmission line reducing the
risk of damage to the line, antenna or other components.
CASCADED OPERATION
By enabling Cascaded Interlock Operation on one or more Plus-X VSWR units and tying together all Pin 16 Status
Inputs, for all the Plus-X VSWR units, an operator can setup the system to shut down the RF signal to all
transmission lines simultaneously if there is a single fault detected. Cascaded operation is useful in situations
where multiple transmitters feed a combiner and a single fault downstream of the combiner output could
damage one or more of them.

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CONNECTIONS, CONTROLS AND INDICATORS
FRONT PANEL
The front panel of the Plus-X VSWR is shown in Figure 1.
Figure 1. Front panel of the Plus-X VSWR
POWER INDICATOR
Table 1 describes the possible states of the power indicator.
Indicator State Description
Power LED Unlit Power is off
Power LED Green Power is on
Power LED Amber No firmware loaded (contact Support at Burk Technology)
Power LED Flashing Green Resetting to factory default settings
Table 1. Front panel power indicator states.

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LINK INDICATOR
Table 2 describes the possible states of the link indicator.
Indicator State Description
Link LED Green Connected to Arcturus or ARC Plus
Link LED Unlit No Connection to Arcturus or ARC Plus
Link LED
Flashing
Red/Green
Connected to Arcturus or ARC Plus but unit is in
Maintenance Mode
Link LED Flashing Red/Unlit
No Connection to Arcturus or ARC Plus but unit is in
Maintenance Mode
Table 2. Link indicator states
MAINT BUTTON
Plus-X VSWR can be put in Maintenance mode by pressing the front panel Maint button. When the Plus-X
VSWR is in maintenance mode remote control commands are disabled. Maintenance mode must be
toggled from the front panel and the front panel control must be enabled in the Interlock Configuration
page of the website interface. For safety reasons, Maintenance mode cannot be enabled or disabled by any
remote means.
REAR PANEL
The rear panel of the Plus-X VSWR is shown in the photograph below in Figure 2.
Figure 2. Back panel of Plus-X VSWR

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METERING CONNECTIONS
Metering inputs are available on a 2x6 “Phoenix”-type header (two mating 6-pin plugs are included). Pins
for each channel and ground are labeled. The forward and reflected power signals from the calibrated
power sensors provide the inputs used by the Plus-X VSWR to calculate VSWR for each transmission line.
Pin assignments are detailed in Table 5 and are pre-assigned.
1 ⏚2 3 ⏚4
5 ⏚6 7 ⏚8
STATUS CONNECTIONS
The Plus-X VSWR Status Inputs are organized into two 2x6 “Phoenix”-type headers (four mating 6-pin plugs
are included). Pins for each channel and ground are labeled. Status inputs are normally not used except for
Pin 16 which is the input for cascaded operation.
1 ⏚2 3 ⏚4 5 ⏚6 7 ⏚8
9 ⏚10 11 ⏚12 13 ⏚14 15 ⏚16

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CONTROL RELAY CONNECTIONS
The Plus-X VSWR contains twelve Control Relays that are grouped in redundant pairs. Relays are organized
into two 2x9 “Phoenix”-type headers (four mating 9-pin plugs are included). Pins for common, normally
open and normally closed are indicated for each relay. The redundant pairs are organized and assigned to
transmission lines as shown in Table 3.
1 2 3 4 5 6
C NO NC C NO NC C NO NC C NO NC C NO NC C NO NC
C NO NC C NO NC C NO NC C NO NC C NO NC C NO NC
7 8 9 10 11 12
Relays Assignment in Plus-X VSWR
Relays 1 & 7 Transmission Line 1 Interlocks
Relays 2 & 8 Transmission Line 2 Interlocks
Relays 3 & 9 Transmission Line 3 Interlocks
Relays 4 & 10 Transmission Line 4 Interlocks
Relays 5 & 6 Control of Cascade Operation
Relays 11 & 12 Spare
Table 3. Relay pairs in the Plus-X VSWR
MASTER INIT
The MASTER INIT button on the rear panel of the Plus-X VSWR is used to reset the Plus-X VSWR to factory
default settings. Press and hold this button for approximately three seconds. The LED above the Maint
button on the front panel will flash for a few seconds and go solid again. Unplug the unit and plug it back
in. The unit will now be reset to factory default settings.

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Note: Initializing the unit in this manner will reset all network connection data in the unit to factory default status.
ETHERNET CONNECTION
The ETHERNET connection is the Plus-X VSWR connection to a network and/or an Arcturus or ARC Plus
system.
AC POWER
The AC POWER connector is the Plus-X VSWR connection to 110VAC power for the unit.
MONITORING AND CONTROL
Once configured correctly the Plus-X VSWR provides automatic interrupt of interlock(s) for either reflected
power or VSWR (depending on user configuration) if higher than a threshold limit.
WEBSITE INTERFACE
The website interface is accessed through your web browser by entering the IP address of the unit into the
address bar of the browser. From the website interface, you can monitor channel values, view and change
network settings, configure interlocks and view operational parameters.
ARCTURUS AND ARC PLUS
The Plus-X VSWR can be integrated with the Burk Arcturus or ARC Plus remote-control system. Once
integrated with Arcturus or ARC Plus, the Plus-X VSWR channels become just like any other channel in the
Burk system and can be used to create virtual channels, set alarms, activate interlocks beyond those
directly controlled by the Plus-X VSWR and provide integrated status with the rest of the site.
FIRMWARE UPDATES
Plus-X VSWR firmware is subject to updates on a periodic basis. To update the firmware, refer to the Burk
Firmware Loader Manual and Application at: https://www.burk.com/support/downloads.

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INSTALLATION
The flowchart in Figure 3 shows the top-level installation steps for a single Plus-X VSWR. Step-by-step
instructions follow. This flow chart is intended to orient the user to the complete process. If you plan to
install more than one Plus-X VSWR system, perform this installation process separately for each Plus-X
VSWR. To prevent a possible network collision, do not plug a new Plus-X VSWR into your network until you
have entered the unique network settings for the last Plus-X VSWR system installed.
Figure 3. Overview of Plus-X VSWR installation procedure
UNPACKING
The Plus-X VSWR ships with the following:
•Plus-X VSWR unit
•Power cord
•10’ shielded CAT5 cable
•Six (6) 6-pin “Phoenix”-type plugs
•Four (4) 9-pin “Phoenix”-type plugs
These parts will be needed for each Plus-X VSWR you plan to install. If any parts are not present when you
unpack the box(es), please contact Burk Technology Sales Department.
Sta rt
Mo unt t he Pl us -X
VSWR unit(s) in their
rack space and a pply
power
Unp ack syst em and
inspect contents
Connect the first
Plus-X VSWR to your
LAN switch using the
ethernet cable.
Log-on to t he P lus-X
VSWR:
<User Name>
<pas swo r d>
Conta ct the Pl us-X
VSWR for which you
j ust sa ve d ne tw ork
settings.
Repeat process for
each Plus-X VSWR
you wish to install.
Log-o n to t hi s P lu s-X
VSWR unit f or t he
fi rs t ti me.
Enter & Record Plus-X VSWR Network Settin gs:
1. Unique hostname for your Plus-X VSWR
2. Static IP Address for your Plus-X VSWR
3. Network Sub net Mask & Gateway
4. IP Address of your ARCPlus system if
ap pl ic abl e
Save the network
settings and wait for
system to reboot.
Close the browse r
win dow and re-o pe n
a new window.

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COMPATIBILITY
If you plan to use your Plus-X VSWR unit(s) with an Arcturus or ARC Plus System, make sure the system
firmware and AutoLoad Plus software versions are updated to the minimum release versions provided in
Table 4. If you plan to use AutoPilot software with your Plus-X VSWR unit(s), make sure your AutoPilot
software is updated to the minimum release version provided in Table 4.
Firmware / Software Version
Arcturus firmware 5.0.0.0
ARC Plus firmware 2.1.0
AutoLoad Plus software 2.0.0
AutoPilot Software 2.5.0
Table 4. Firmware compatibility
NETWORK CONNECTIVITY
Before installing the Plus-X VSWR, have the following information ready to enter in to the Plus-X VSWR network
settings window when you get to that step in the process:
•A unique static IP address for the Plus-X VSWR you are installing
•The subnet mask and gateway address for your LAN
•The IP address of your Arcturus or ARC Plus system, if applicable
LOG ON FOR THE FIRST TIME
The process to establish communication with the Plus-X VSWR for the very first time depends on whether you
have a Dynamic Host Configuration Protocol (DHCP) enabled network.
USING A DHCP ENABLED NETWORK
If your network has DHCP, follow the steps below or else proceed to IF DHCP IS NOT ENABLED
1. Plug one Plus-X VSWR into your network switch.
2. Open a web browser and type in the following address in the browser address bar: <plusxvswr/>
3. A window will appear asking to enter in a password for the Plus-X VSWR.

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4. After you Save the new password for the Plus-X VSWR, a new log on screen will appear.
5. Enter in the default username <admin> and the password you just defined in step 3.
6. After you log on, the next screen to appear will request that you enter a static IP address for your
Plus-X VSWR. This is the IP address you will use to launch a website interface session with the
Plus-X VSWR and that an Arcturus or ARC Plus system can use to communicate with the Plus-X
VSWR.

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7. After you enter in and Save a new Static IP address for the Plus-X VSWR, a new log-on screen will
pop up asking you to log on again. Enter the username and password you have set for the Plus-X
VSWR just like you did in step 4.
8. After your log on is complete, the Plus-X VSWR will open to the Network screen of the website
interface.
In this window you should enter in the following information:
•Unique Net/BIOS Hostname (especially if you have more than one Plus-X VSWR)
•Subnet Mask
•Gateway
•Arcturus or ARC Plus IP Address (if applicable)
9. The Plus-X VSWR is now ready for operation in your system as either a stand-alone device or as
part of an Arcturus or ARC Plus system. Repeat this process for each Plus-X VSWR one at a time.
IF DHCP IS NOT ENABLED
If you are not working in a DHCP enabled network, follow the steps below.
1. Temporarily setup your computer to have an IP address as follows:
<192.168.0.xxx>
You can use any unused number you like for the xxx except 1 or 100. Make sure the temporary IP
address you choose for your computer doesn’t conflict with other equipment on your network.
2. Open a web browser and type in the following address into the address bar:
<192.168.0.100>

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3. A window will appear asking you to enter in a password for the Plus-X VSWR.
4. After you Save the new password for the Plus-X VSWR, a new log on screen will appear.
5. Enter in the default username <admin> and the password you just defined in step 3.
6. After you log on, the next screen to appear will request that you enter a static IP address for your
Plus-X VSWR. This is the IP address you will use to launch a website interface session with the
Plus-X VSWR and that an Arcturus or ARC Plus system can use to communicate with the Plus-X
VSWR.
7. Once the new IP address for the Plus-X VSWR is saved, reset your computer back to its original IP
address so that you can communicate with your network again (including the new Plus-X VSWR).

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8. Open a browser window and type in the IP address you have assigned to the Plus-X VSWR in Step
5.
9. The Plus-X VSWR is now ready for operation in your system as either a stand-alone device or as
part of an Arcturus or ARC Plus comprehensive monitoring and control system. Repeat this
process for each Plus-X VSWR you install in your monitoring and remote-control system.
METER INPUT WIRING
The Plus-X VSWR can provide forward and reflected power measurements and VSWR calculation on up to
four transmission lines simultaneously. For each transmission line, two RF power sensors provide an analog
voltage signal to the inputs of the Plus-X VSWR. The metering inputs on the Plus-X VSWR only accept inputs
between 0 VDC and +10 VDC. An appropriate calibration factor is required for each input. Metering input
pins are pre-assigned to transmission line inputs and cannot be changed. See Table 5.
Pin Transmission Line Input
11 forward power
2 ground
3 1 reflected power
4 2 forward power
5 ground
6 2 reflected power
7 3 forward power
8 ground
9 3 reflected power
10 4 forward power
11 ground
12 4 reflected power
Table 5. Metering input pins for Plus-X VSWR

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The Burk PRF-1, Precision RF Sensor, is powered by a DC power supply providing between 9 V and 24 V. The DC
output signal is linear with respect to the RF sample input power. Pin-outs for the PRF-1 are shown in Table 6.
Pin
Signal
1
(V+) DC power supply in
2
ground
3
(V+) DC signal out
4
ground
Table 6. Pin identification for Burk PRF-1
Precision RF Sensor
STATUS INPUT WIRING
The status inputs on the Plus-X VSWR are not used except for one possible exception. Pin 16 can be used to accept
Cascade input from another Plus-X VSWR
system. Cascade operation refers to the built-in
option for the VSWR to open all relay outputs on
a single input fault from any of the transmission
lines directly tied to the Plus-X VSWR, or from
grounding of status input pin 16 by another Plus-
X VSWR Cascade output signal.
CONTROL RELAY WIRING
The Plus-X VSWR relays are factory assigned to the transmission lines per Table 3 in CONTROL RELAY
CONNECTIONS. Each relay opens and closes together with its paired partner. The relays can be operated in
Normally Closed or Normally Opened configuration. A setting in the Interlock Configuration window of the website
interface allows the user to identify whether the interlocks are used in normally open or closed configuration. See
STATUS CONNECTIONS for an example installation of control relays for the Cascade operation function of the
Plus-X VSWR.
SOFTWARE CONFIGURATION
Unlike other Plus-X devices, the Plus-X VSWR does not need an additional Arcturus or ARC Plus system to function.
Once communications with the Plus-X VSWR are established from your Personal Computer (see LOG ON FOR THE
FIRST TIME), you can configure the device through the website interface via the Settings Menu and the Interlock
Configuration page (see MONITORING AND CONTROL).

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ADDING THE PLUS-X VSWR TO THE ARCTURUS OR ARC PLUS
Installation Note: Even though you may operate the Arcturus or ARC Plus system and Plus-X VSWR on different subnets,
Burk Technology strongly recommends installing the Plus-X VSWR on the same LAN as the Arcturus or ARC Plus. If
communications between separate networks fail, an Arcturus or ARC Plus can only continue to monitor and control a
Plus-X device on the same LAN. If the network link between the units is not available, Arcturus or ARC Plus macros and
alarm monitoring will be unavailable for the Plus-X VSWR.
To use the Plus-X VSWR as part of an Arcturus or ARC Plus remote monitoring and control system, you will need to
add the Plus-X VSWR to the system using Autoload Plus software.
1. Complete steps in LOG ON FOR THE FIRST TIME to establish PC communications with your Plus-X VSWR
Unit(s).
2. Download the latest AutoLoad Plus software from the Burk Website.
3. Open the AutoLoad Plus software. You will see a screen like the one below.
4. Enter in the User Name, Password and IP/Host name for your Arcturus or ARC Plus system. The default
screen will look the screen shown below. Click Local Site in the top left of the window.

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5. After you click LocalSite, you will see the existing channels that are already configured on the Arcturus or
ARC Plus appear in the AutoLoad Plus window.
In the screen shot above, the ARC Plus system has no meter channels configured. This may or may not be
the case with your system.
Note: If you have meter channels already configured in your Arcturus or ARC Plus, note the channel number of the first
available meter channel.
6. To add a Plus-X VSWR unit to the Arcturus or ARC Plus, select Edit Menu, click Add Plus-X Device under
the Edit Menu and click on + Add on the screen that pops up. You will see a second pop-up screen for you
to enter in the relevant data for the Plus-X VSWR unit.

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Device
Type
Choose Plus-X VSWR from the pull-down list of choices.
Description Provide a unique descriptor like “PlusXVSWR104”.
IP Address
Enter in the static IP address you selected when you first
setup communications with the Plus-X VSWR.
Port Leave this at Port 45000.
Check Box Map the default set of channels. Make sure this box is checked.
Starting
Channel
Enter channel 1 or the channel number you noted in step 5.
Table 7. Pop-up window for Plus-X VSWR information needed to add the unit to
an ARC Plus system.
7. Click OK.
8. After you click OK in Step 6, you will see the following screen.
The last step is to save
the configuration of the
Arcturus or ARC Plus
channels for your Plus-
X VSWR by clicking
Save To (this example
shows saving to an ARC
Plus system).
Your first Plus-X VSWR is now connected to the Arcturus or ARC Plus system. Channels may be calibrated
and configured via the Plus-X VSWR website interface using the Interlock Configuration tab under the
Settings Menu.