BEI Electronics 7EPTX-STX60 60W LPFM Broadcast Transmitter User Manual Exhibit D Users Manual per 2 1033 c3

BEI Electronics, LLC 60W LPFM Broadcast Transmitter Exhibit D Users Manual per 2 1033 c3

Exhibit D Users Manual per 2 1033 c3

Broadcast Electronics

4100 North 24th Street, Quincy, Illinois 62305 USA • Phone (217) 224-9600 • Fax (217) 224-9607 • www.bdcast.com • bdcast@bdcast.com

STXe – 60 Watt FM Exciter

Operation Manual

597-4062

Revision A

July 23, 2013

STXe – 60 Watt FM Exciter

Operation Manual

The information in this publication is subject to improvement and change without notice. Although

every effort is made to ensure the accuracy of the information in this manual, Broadcast Electronics

accepts no responsibility for any errors or omissions. Broadcast Electronics reserves the right to

modify and improve the design and specifications of the equipment in this manual without notice.

Any modifications shall not adversely affect performance of the equipment so modified.

Proprietary Notice

This document contains proprietary data of Broadcast Electronics. No part of this publication may be

reproduced, transmitted, transcribed, stored in a retrieval system, translated into any other language

in any form or by any means, electronic or mechanical, including photocopying or recording, for any

purpose, without the express written permission of Broadcast Electronics.

Trademarks

Broadcast Electronics and the BE logo are registered trademarks of Broadcast Electronics.

Marti Electronics and the Marti logo are registered trademarks of Broadcast Electronics.

All other trademarks are property of their respective owners.

Information in this manual is subject to change without notice and does not represent a

commitment on the part of Broadcast Electronics.

Broadcast Electronics may make improvements and/or changes in this manual or in the product

described herein at any time.

This product could include technical inaccuracies or typographical errors.

Broadcast Electronics Product Warranty (Two-Year Limited)

BE hereby warrants all new products manufactured by BE against any defects in material or

workmanship at the time of delivery thereof, or that develop under normal use within a period of

two (2) years from the date of shipment.

BE reserves the right to repair equipment under warranty with new or refurbished equipment or

parts. BE’s sole responsibility with respect to any equipment or parts not conforming to this warranty

is to replace or repair such equipment upon the return thereof F.O.B. to BE’s factory in Quincy,

Illinois, U.S.A. In the event of replacement pursuant to the foregoing warranty, only the unexpired

portion of the warranty from the time of the original purchase will remain in effect for any such

replacement.

This warranty shall exclude the following products, component parts and/or assemblies:

(a) Transmitter power output tubes shall only carry the original manufacturers’ or

suppliers’ standard warranty in effect on their original shipment date.

(b) All computers, computer peripherals, cables, hard disk drives, etc., shall only carry

the manufacturers’ or suppliers’ standard warranty in effect on their original

shipment date.

circuits, capacitors, resistors, inductors, fans, etc), resold by BE from another

manufacturer or supplier, shall only carry a 90 day warranty, effective the date of

shipment. Any such ‘Components’ being returned for warranty claim must be (1)

returned in their original packaging and (2) must be in new, unused condition. BE is

unable to process or resolve component defects or performance concerns on

components that have been soldered, installed, wired or in any way altered from

new their new condition.

(d) “Resale Equipment”, defined as equipment purchased from another manufacturer

or supplier, then resold by BE, shall only carry such manufacturer’s or supplier’s

standard warranty in effect as of the original shipment date. All warranty claims

against any and all ‘resale equipment’ sold by BE must be filed directly with the

original equipment manufacturer. BE is unable to process or resolve equipment

defects or performance concerns on products or services not manufactured by BE.

This warranty shall not extend to claims resulting from any acts of God, terrorism, war, defects or

failures caused by Purchaser or user abuse or misuse, operator error, or unauthorized attempts to

repair or alter the equipment in any way.

Under no circumstances shall BE be responsible for indirect, incidental or consequential damages,

including, but not limited to transportation costs, non-authorized repair or service costs, downtime

costs, costs for substituting equipment or loss of anticipated profits or revenue, incurred by

Purchaser, whether based in contract, tort or for negligence or breach of statutory duty or otherwise.

The terms of the foregoing warranty shall be null and void if the equipment has been altered or

repaired without specific written authorization from BE, or if not installed according to BE’s

instruction manuals, including, but not limited to, the absence of proper grounding, surge (TVSS)

protection on the AC circuit panel or proper lightning protection/grounding on all output circuits, or

if equipment is operated under environmental conditions or circumstances other than those

specifically described in BE’s product literature or instruction manual which accompany the

equipment.

The warranty shall be voided if the product or subassembly is equipped with a tamper

seal and that tamper seal is broken.

BE shall not be liable for any expense of any nature whatsoever

incurred by the original user without prior written consent of BE. The warranty provided herein shall

terminate at the end of the period set forth above.

This warranty extends only to the original

Purchaser and is not transferable.

There are no third party beneficiaries of any of the provisions of

this warranty. If the equipment is described as “used” equipment, it is sold as is and where is and no

warranty applies unless authorized in writing. .

EXCEPT AS SET FORTH HEREIN, AS TO TITLE AND AS SPECIFICALLY REQUIRED BY LAW, THERE ARE

NO OTHER WARRANTIES, OR ANY AFFIRMATIONS OF FACT OR PROMISES BY BE, WITH REFERENCE

TO THE EQUIPMENT, OR TO MERCHANTABILITY, FITNESS FOR A PARTICULAR APPLICATION, SIGNAL

COVERAGE, INFRINGEMENT, OR OTHERWISE, WHICH EXTEND BEYOND THE DESCRIPTION OF THE

EQUIPMENT ON THE FACE HEREOF.

iii

IMPORTANT INFORMATION

EQUIPMENT LOST OR DAMAGED IN TRANSIT

When delivering the equipment to you, the truck driver or carriers’ agent will present a receipt for

your signature. Do not sign it until you have:

1) Inspected the containers for visible signs of damage and 2) Counted the containers and compared

with the amount shown on the shipping papers. If a shortage or evidence of damage is noted, insist

that notation to that effect be made on the shipping papers before you sign them.

Further, after receiving the equipment, unpack it and inspect thoroughly for concealed damage. If

concealed damage is discovered, immediately notify the carrier, confirming the notification in

writing, and secure an inspection report. This item should be unpacked and inspected for damage

WITHIN 15 DAYS after receipt. Claims for loss or damage will not be honored without proper

notification of inspection by the carrier.

RF PRODUCT TECHNICAL ASSISTANCE, REPAIR SERVICE, PARTS -

Technical assistance is available from Broadcast Electronics by letter, prepaid telephone or E-mail.

Equipment requiring repair or overhaul should be sent by common carrier, prepaid, insured, and well

protected. If proper shipping materials are not available, contact the RF Technical Services

Department for a shipping container. Do not mail the equipment. We can assume no liability for

inbound damage, and necessary repairs become the obligation of the shipper. Prior arrangement is

necessary. Contact the RF Technical Services Department for a Return Authorization.

Emergency and warranty replacement parts may be ordered from the following address. Be sure to

include the equipment model number, serial number, part description, and part number. Non-

emergency replacement parts may be ordered directly from the Broadcast Electronics stock room at

the number shown below.

RF TECHNICAL SERVICES

Telephone: +1 (217) 224-9617

E-Mail: rfservice@bdcast.com

Fax: +1 (217) 224-6258

FACILITY CONTACTS

Broadcast Electronics, - Quincy Facility

4100 N. 24th St. P.O. BOX 3606

Quincy, Illinois 62305

Telephone: +1 (217) 224-9600

Fax: +1 (217) 224-6258

General E-Mail: bdcast@bdcast.com

Web Site: www.bdcast.com

PARTS

Telephone: +1 (217) 224-9617

E-Mail: parts@bdcast.com

RETURN, REPAIR, AND EXCHANGES

Do not return any merchandise without our written approval and Return Authorization. We will

provide special shipping instructions and a code number that will assure proper handling and

prompt issuance of credit. Please furnish complete details as to circumstances and reasons when

requesting return of merchandise. All returned merchandise must be sent freight prepaid and

properly insured by the customer.

MODIFICATIONS

Broadcast Electronics, reserves the right to modify the design and specifications of the equipment in

this manual without notice. Any modifications shall not adversely affect performance of the

equipment so modified.

SAFETY PRECAUTIONS

PLEASE READ AND OBSERVE ALL SAFETY PRECAUTIONS

ALL PERSONS WHO WORK WITH OR ARE EXPOSED TO POWER TUBES, POWER

TRANSISTORS, OR EQUIPMENT WHICH UTILIZES SUCH DEVICES MUST TAKE PRECAUTIONS

TO PROTECT THEMSELVES AGAINST POSSIBLE SERIOUS BODILY INJURY. EXERCISE EXTREME

CARE AROUND SUCH PRODUCTS. UNINFORMED OR CARELESS OPERATION OF THESE

DEVICES CAN RESULT IN POOR PERFORMANCE, DAMAGE TO THE DEVICE OR PROPERTY,

SERIOUS BODILY INJURY, AND POSSIBLY DEATH.

DANGEROUS HAZARDS EXIST IN THE OPERATION OF POWER TUBES AND

POWER TRANSISTORS

The operation of power tubes and power transistors involves one or more of the following hazards,

any one of which, in the absence of safe operating practices and precautions, could result in serious

harm to personnel.

A. HIGH VOLTAGE - Normal operating voltages can be deadly. Additional information

follows.

B. RF RADIATION - Exposure to RF radiation may cause serious bodily injury possibly

resulting in Blindness or death. Cardiac pacemakers may be affected. Additional

information follows.

C. HOT SURFACES - Surfaces of air-cooled radiators and other parts of tubes can reach

temperatures of several hundred degrees centigrade and cause serious burns if touched.

Additional information follows.

D. RF BURNS - Circuit boards with RF power transistors contain high RF potentials. Do

not operate an RF power module with the cover removed.

HIGH VOLTAGE

Many power circuits operate at voltages high enough to kill through electrocution. Personnel should

always break the primary AC Power when accessing the inside of the transmitter.

RADIO FREQUENCY RADIATION

Exposure of personnel to RF radiation should be minimized, personnel should not be permitted in the

vicinity of open energized RF generating circuits, or RF transmission systems (waveguides, cables,

connectors, etc.), or energized antennas. It is generally accepted that exposure to “high levels” of

radiation can result in severe bodily injury including blindness. Cardiac pacemakers may be affected.

The effect of prolonged exposure to “low level” RF radiation continues to be a subject of

investigation and controversy. It is generally agreed that prolonged exposure of personnel to RF

radiation should be limited to an absolute minimum. It is also generally agreed that exposure should

be reduced in working areas where personnel heat load is above normal. A 10 mW/cm2 per one

tenth hour average level has been adopted by several U.S. Government agencies including the

Occupational Safety and Health Administration (OSHA) as the standard protection guide for

employee work environments. An even stricter standard is recommended by the American National

Standards Institute which recommends a 1.0 mW/cm2 per one tenth hour average level exposure

between 30 Hz and 300 MHz as the standard employee protection guide (ANSI C95.1-1982).

RF energy must be contained properly by shielding and transmission lines. All input and output RF

connections, such as cables, flanges and gaskets must be RF leak proof. Never operate a power tube

without a properly matched RF energy absorbing load attached. Never look into or expose any part

of the body to an antenna or open RF generating tube or circuit or RF transmission system while

energized. Monitor the tube and RF system for RF radiation leakage at regular intervals and after

servicing.

HOT SURFACES

The power components in the transmitter are cooled by forced-air and natural convection. When

handling any components of the transmitter after it has been in operation, caution must always be

taken to ensure that the component is cool enough to handle without injury.

vii

Table of Contents

1 Overview.............................................................................................................................. 1

2 Front Panel Features ............................................................................................................ 2

2.1 FAILSAFE ............................................................................................................................. 2

2.2 AUDIO ................................................................................................................................. 2

2.3 EXC DRV .............................................................................................................................. 2

2.4 CNTL.................................................................................................................................... 3

2.5 PA ....................................................................................................................................... 3

2.6 PS ........................................................................................................................................ 3

2.7 VSWR .................................................................................................................................. 3

2.8 TRANSMITTER CONTROL CENTER ......................................................................................... 3

3 Transmitter Control Center ................................................................................................. 4

3.1 Contrast Control .................................................................................................................. 4

3.2



Left Button ...................................................................................................................... 4

3.3



Right Button .................................................................................................................... 4

3.4



Up Button ........................................................................................................................ 4

3.5



Down Button .................................................................................................................... 5

3.6



Return Button ................................................................................................................. 5

4 Web Page .......................................................................................................................... 11

5 SNMP ................................................................................................................................. 13

5.1 Authentication................................................................................................................... 13

5.2 Objects .............................................................................................................................. 14

6 Backup Control Modes ...................................................................................................... 18

6.1 Emergency Control Mode .................................................................................................. 18

6.2 Standby System Control and Exciter ................................................................................... 18

7 Troubleshooting ................................................................................................................ 19

7.1 Event Log .......................................................................................................................... 19

7.2 Standby ............................................................................................................................. 19

7.3 Failsafe .............................................................................................................................. 19

7.4 Mute ................................................................................................................................. 20

7.5 Internal Exciter Diagnostics ................................................................................................ 20

7.6 Power Amplifier Diagnostics .............................................................................................. 20

viii

Figures

Figure 1 – Main Assembly Front Panel ........................................................................................... 2

Figure 2 – Transmitter Control Center ........................................................................................... 4

Figure 3 – Transmitter Control Center Menus Sheet 1 ................................................................... 7

Figure 4 – Transmitter Control Center Manus Sheet 2 ................................................................... 9

Figure 5 – Web Interface Main Page ........................................................................................... 11

Figure 6 – Web Interface Authentication ..................................................................................... 11

Figure 7 – Web Interface PA Page ............................................................................................... 12

Figure 8 – Web Interface Events Page ......................................................................................... 12

Figure 9 – MIB Download ........................................................................................................... 13

Figure 10 – STXe60 System Block Diagram .................................................................................. 23

Tables

Table 1 – SNMP Object Access .................................................................................................... 14

Table 2 – Exciter Diagnostics Details ............................................................................................ 20

Table 3 – PA Diagnostics Details .................................................................................................. 20

Overview 1

The STXe FM exciter series is designed to provide a cost effective solution for FM broadcast.

Every STXe exciter is tested at the factory for quality and reliability. Technicians will use settings given

to sales representatives at the time of purchase. In the absence of this information, the following

default settings are used:

• Frequency – 98.5 MHz

• Operating Mode – FM Only

• Total Output Power – Set to model name (1 kW Model - 1000 W, etc.)

• Emergency Output Power – 0 W

• 100% Modulation – 75 kHz

• Pre-emphasis – 75 µs

• Pilot Injection – On, 10%

• Mono/Stereo Mode - Stereo

• Audio Input – AES

• AES Injection Level – 100% at -2dBfs

• Analog L/R Injection Level – 100% with 3.5 Vpp at 400 Hz

• SCA1 Injection – Off, 10% with 3.5 Vpp at 67 kHz

• SCA2 Injection – Off, 10% with 3.5 Vpp at 92 kHz

• RDS Injection – Off, 10% with 3.5 Vpp at 53 kHz

• Real Time Clock – Central Standard Time. Note: The internal real time clock will stop

keeping time and reset to 2000-01-01 00:00:00 when the system has no AC power for

a few days. This is highly likely when the exciter is shipped.

• Ethernet

o DHCP - Disabled

o I.P. – 10.2.4.110

o Subnet Mask – 255.255.0.0

o Gateway – 10.2.1.1

• Passwords

o Chief – 12345678

o User – 22222222

o Operator – 11111111

For installation instruction, please see the STXe FM Exciter Installation and Maintenance Application

Guide. A copy can be found in the front of the binder containing this manual that is shipped with all

STXe exciters. For electronic copies of any technical documentation please visit

http://www.bdcast.com/information-center/ and follow navigation on the left side of the page –

authorized login is required for download of technical documents.

Front Panel Features 2

The main assembly front panel contains LED indicators for the system controller, internal

exciter, internal power amplifier, and an LCD user interface.

Figure 1 – Main Assembly Front Panel

2.1 FAILSAFE

The failsafe LED is coupled directly to the failsafe input on the back panel. Green indicates

the failsafe is connected for normal operation. If red the failsafe is not connected and RF

power will not turn on.

2.2 AUDIO

The audio LED indicates the status of the current primary audio source. If an audio peak

silence condition is detected, this LED turns red. The LED remains green until a failure is

detected. Check the exciter diagnostics for details on what alarms or faults may be active.

2.3 EXC DRV

The exciter drive LED indicates the status of any alarms or faults related to the exciter. Green

indicates that the exciter has settled into normal operating conditions. Orange indicates an

alarm condition. Red shows when the exciter has a fault condition. See Table 2 – Exciter

Diagnostics Details in section 7.5 for more information.

Note that there is overlap between internal exciter and internal PA status for drive detection.

An exciter drive alarm indication may originate from the PA. The exciter must also establish

frequency lock as it powers up. These are intended to indicate conditions that prevent full

operation whether the conditions are expected or not. Check the exciter and PA diagnostics

for details on what alarms or faults may be active.

2.4 CNTL

The system control LED shows the status of the system controller. Green indicates normal

control operation. Red indicates a loss of communication between the front panel and the

system controller.

2.5 PA

The power amplifier LED shows status of the internal PA. Green indicates normal power

control. Orange indicates an alarm condition. Red indicates a fault and PA shutdown

condition. Check PA diagnostics for details on what alarms or faults may be active.

2.6 PS

The power supply LED shows the status of the RF power supply module. Green indicates

normal operation. Orange indicates a self-reported alarm. Red indicates a determined fault.

Check PA diagnostics for details on what alarms or faults may be active in the supply

connected to the PA.

Note that these power supplies are on the same communications node as the PA they are

connected to. A communication fault will illuminate red on both the PA and the PS LEDs.

2.7 VSWR

The voltage standing wave ratio LED shows the status of the internal PA output in terms of

measured reflected power. Green indicates normal operation into an acceptable load.

Orange indicates active foldback protection. Red indicates a fault and shutdown condition.

Check PA diagnostics for details on what alarms or faults may be active in the PA.

2.8 TRANSMITTER CONTROL CENTER

This front panel LCD interface can be used for control and monitoring of all features in the

system. Use the five buttons below the screen to navigate and make modifications. See

section 3 - Transmitter Control Center for details on how to use this interface.

Transmitter Control Center 3

Initial system setup after installation requires interfacing with the LCD display and buttons on the

front of the main assembly. Once initial setup is complete, almost all configurations accessible on this

control center can be modified remotely via Ethernet interfaces.

Figure 2 – Transmitter Control Center

3.1 Contrast Control

A potentiometer tuning tool can be used to adjust the contrast on the LCD screen if desired.

Turning the potentiometer clockwise reduces contrast, and turning it counter-clockwise

increases contrast.

3.2



Left Button

The context dependent left button performs two primary functions. When navigating

between screens it allows a return to the main screen from any other navigation screen.

When an editing screen is entered this button moves the cursor one space to the left.

3.3



Right Button

The context dependent right button performs two primary functions. When navigating

between screens it allows a return to the first screen of the submenu tree. When an editing

screen is entered this button moves the cursor one space to the right.

3.4



Up Button

The context dependent up button performs various functions. When navigating between

screens through the trunk it selects a new submenu tree. After entering a submenu screen it

either selects different branches or cycles through options. When an editing screen is

entered this button modifies the object located at the cursor.

3.5



Down Button

The context dependent down button performs various functions. When navigating between

screens through the trunk it selects a new submenu tree (in the opposite direction as the up

button). After entering a submenu screen it either selects different branches or cycles

through options. When an editing screen is entered this button modifies the object located

at the cursor.

3.6



Return Button

The context dependent down button performs two primary functions. When navigating

between screens through the trunk it enters the next level in the menu. This can lead to

submenu screens, options selection, or field editing. Once an editing function has been

made this saves the field and returns to the first screen in the submenu tree.

Figure 3 – Transmitter Control Center Menus Sheet 1

Figure 4 – Transmitter Control Center Manus Sheet 2

Web Page 4

The STXe comes standard with a built in HTTP web server. To load the web page, simply direct a

standard web browser to the IP assigned to the Ethernet port on the system.

Figure 5 – Web Interface Main Page

The basic settings and monitoring fields in the system are shown above in Figure 5 – Web Interface.

To cycle through the active user selection click the “Current User” link in the upper left. To access PA

monitoring information or the event log click on “PA STATUS” or “EVENT LOG” links respectively.

These can be seen in Figure 7 and Figure 8.

Posting any settings to the exciter requires an appropriate login. The graphic button objects are

disabled for user types that do not have permission to modify exciter settings. Once an adequate user

selection is made, the buttons can be clicked to display any additional options. When the change is

attempted a dialog box will pop up, which can be seen in Figure 8. Simply enter the active user type

and the correct 8-digit numerical password that goes with it to save the setting. Note: password

entry times out after 10 seconds and must be entered on the next new settings change attempt.

Valid login is remembered for the active session.

Figure 6 – Web Interface Authentication

Figure 7 – Web Interface PA Page

Figure 8 – Web Interface Events Page

To check the current web page version, simply point a web browser to [IP Address]/rev.html

SNMP 5

Simple Network Management Protocol is a member of the Internet Protocol standard

communications suite. The STXe comes with a built-in SNMP agent (SNMP version 2c) for handling

all request types included in the protocol – GET, SET, GETNEXT, and GETBULK. The appropriate MIB

for the version of SNMP agent installed on the exciter must be downloaded from the exciter itself. As

with any MIB, this ASCII text file completely defines the data structure within the agent. The MIB also

provides textual descriptions for every accessible object. To download the file access the web

interface using a standard web browser. Right click on the “SNMP MIB File” link and click “Save link

as…”, refer to Figure 9. Save a local copy of the MIB file wherever desired for use in an SNMP

manager application. Alternatively, click the link and navigate to the file in the browser. Right click

anywhere in the viewing space and click “Save as…” Simply remove the .txt extension (leaving only

the .mib extension) and save at the desired location.

Figure 9 – MIB Download

An SNMP manager application must be utilized in order to access the interface. Integrating a

manager into custom station automation programs provides countless possibilities. Alternatively,

various third party MIB browser GUI applications are available for free download; however Broadcast

Electronics does not endorse any specific application. Simply direct the manager to the Ethernet port

for communication across a network.

5.1 Authentication

Data is accessible by using the correct community strings for the desired login level. The

formula for these strings is a combination of the login type – chief, user, or operator –, a

delimitating ‘+’ character, and the 8 digit numerical password associated with that login

type. For example, “chief+12345678” in both the read community and write community

passes authentication and allows read and write to essentially every object in the MIB with

the appropriate max-access type. User and Operator login types provide more strict control

over what settings can be modified and commands issued in the system.

5.2 Objects

The SNMP interface utilizes tables wherever it makes sense to communicate data in an

indexed fashion. To accommodate a scalable transmitter product design almost all PA data is

structured as tables by using the PA number as the index. This works by appending “.1” to

the object indicating the single 60W Pa in the system. Note that a normal “leaf” node is

accessed by appending “.0” as in …38118.2.2.2.0 for system forward power.

Table 1 – SNMP Object Access

Object ID

User Access

Operator Access

Chief Access

transmitterType

Read

Read/Write

serialNumber

Read

activeStandby

Read

primarySecondary

Read

frequency

Read

Read/Write

time

Read

Read/Write

date

Read

Read/Write

macAddress

Read

useDHCP

Read

Read/Write

keyTypeSNMPv3

Read

Read/Write

requireSNMPv3

Read

Read/Write

requireHTTPDigestAuth

Read

Read/Write

ipAddress

Read

subnetMask

Read

gatewayAddress

Read

staticIPAddress

Read

Read/Write

staticSubnetMask

Read

Read/Write

staticGatewayAddress

Read

Read/Write

userPassword

Read/Write

operatorPassword

None

Read/Write

chiefPassword

None

Read/Write

transmitterIsOn

Read

systemForwardPower

Read

systemReflectedPower

Read

transmitterOnOff

Read

Read/Write

currentPowerMode

Read

autoPowerMode

Read

defaultPowerMode

Read

Read/Write

setpointCurrent

Read

Read/Write

setpointFM

Read

Read/Write

setpointFmDigital

Read

Read/Write

setpointDigital

Read

Read/Write

setpointCurrentMin

Read

setpointFMMin

Read

setpointFmDigitalMin

Read

setpointDigitalMin

Read

setpointCurrentMax

Read

setpointFMMax

Read

setpointFmDigitalMax

Read

setpointDigitalMax

Read

Object ID

User Access

Operator Access

Chief Access

inputSelect

Read

Read/Write

peakModulationDeviation

Read

Read/Write

preemphasis

Read

Read/Write

monoStereoMode

Read

Read/Write

modulationPeakHold

Read

stereoGeneratorPeakHold

Read

compositeAdjust

Read

Read/Write

compositeDB

Read

compositePeakHold

Read

analogLAdjust

Read

Read/Write

analogLDB

Read

analogLPeakHold

Read

analogRAdjust

Read

Read/Write

analogRDB

Read

analogRPeakHold

Read

sca1OnOff

Read

Read/Write

sca1Adjust

Read

Read/Write

sca1DB

Read

sca2OnOff

Read

Read/Write

sca2Adjust

Read

Read/Write

sca2DB

Read

rdsOnOff

Read

Read/Write

rdsAdjust

Read

Read/Write

rdsDB

Read

analogLRLevel

Read

Read/Write

aesLevel

Read

Read/Write

pilotOnOff

Read

Read/Write

pilotLevel

Read

Read/Write

clock10MhzStatus

Read

clock10MhzLock

Read

clock1PPS

Read

afcLock

Read

afcUnlock

Read

modulationSilence

Read

audioInputSilence

Read

audioSilenceThreshold

Read

Read/Write

audioSilencePeriod

Read

Read/Write

exciterCommunications

Read

paForwardPower

Read

paReflectedPower

Read

paPowerSetpoint

Read

Read/Write

paRfInPower

Read

paAlarmStatus

Read

paAlarmPowerSupplyDC

Read

paAlarmFoldbackReflectedPower

Read

paAlarmFoldbackTemperature

Read

paAlarmFoldbackCurrent

Read

paAlarmMutedInput

Read

paAlarmRailed

Read

Object ID

User Access

Operator Access

Chief Access

paFaultStatus

Read

paFaultPowerSupply

Read

paFaultReflectedPower

Read

paFaultVSWR

Read

paFaultTemperature

Read

paFaultCurrentDriver

Read

paFaultCurrentIPA

Read

paFaultCurrentFinal1

Read

paFaultCurrentFinal2

Read

paFaultCurrentFinal3

Read

paFaultCurrentFinal4

Read

paFaultHardware

Read

paFaultCommunication

Read

paTemperature

Read

paPsVoltage

Read

paDriveCurrent

Read

paIPACurrent

Read

paFinal1Current

Read

paFinal2Current

Read

paFinal3Current

Read

paFinal4Current

Read

paTotalCurrent

Read

combinerForwardPower

Read

combinerReflectedPower

Read

splitterRFInputPower

Read

splitterConfigID

Read

splitterBoardRev

Read

splitterAlarmInputMute

Read

splitterAlarmInputOverdrive

Read

splitterAlarmOutputMuted

Read

combinerFaultReflectedPower

Read

combinerFaultVSWR

Read

combinerFaultTemperature

Read

combinerFaultConfig

Read

combinerFaultHardware

Read

combinerFaultCommunication

Read

splitterCombinerPs11V

Read

splitterCombinerPs5V

Read

splitterCombinerPs3_3V

Read

combinerFan

Read

combinerTemperatureInternal

Read

combinerTemperatureInlet

Read

failsafe

Read

muteInput

Read

fmMode

Read

fmDigitalMode

Read

digitalMode

Read

systemReflectedPowerOutput

Read

paTotalCurrentOutput

Read

paTemperatureOutput

Read

Object ID

User Access

Operator Access

Chief Access

systemFaultOutput

Read

vswrSystemOutput

Read

transmitterOnOutput

Read

transmitterOffOutput

Read

muteOutput

Read

afcLockOutput

Read

paPsFaultOutput

Read

paFaultOutput

Read

paForwardPowerOutput

Read

paReflectedPowerOutput

Read

systemForwardPowerOutput

Read

paVoltageOutput

Read

controllerSoftware

Read

controllerHardware

Read

splitterCombinerSoftware

Read

splitterCombinerHardware

Read

paSoftware

Read

paHardware

Read

frontPanelSoftware

Read

frontPanelHardware

Read

systemFaultReset

Read

Read/Write

failsafeStatus

Read

mute

Read

systemAlarm

Read

systemFault

Read

exciterAlarm

Read

exciterFault

Read

paAlarm

Read

paFault

Read

paPsFault

Read

splitterCombinerAlarm

Read

splitterCombinerFault

Read

vswrFault

Read

eventTimestamp

Read

eventType

Read

eventSource

Read

eventCode

Read

eventParam

Read

eventLogEntryOldest

Read

eventLogEntryNext

Read

eventLogClear

Read

Read/Write

Backup Control Modes 6

STXe systems come equipped with two backup control methods. Emergency control mode is

integrated standard with all systems and simply allows the system to continue functioning in the

event of a system controller failure. The backup system control and exciter feature utilizes an entire

STXe system to also allow for full control interfacing with an identical standby exciter.

6.1 Emergency Control Mode

In the event of a loss in communications with the system controller, all sub-systems enter

emergency control mode. Behavior when in this mode depends on user specified emergency

power levels. This must be set to the desired emergency power level in order to enable the

feature, which comes from the factory set at 0 W and is effectively disabled. The system will

continue to function at full emergency power as long as the exciter maintains drive to the

power amplifier. The power amplifier can only enter emergency power mode from a working

state, so it will not unmute or initialize in the emergency power state.

6.2 Standby System Control and Exciter

For complete exciter redundancy an exciter switcher kit can be acquired. These kits supply all

required hardware for utilization of standby STXe systems. The switcher system is then

paired with a second fully functional two rack unit STXe system.

Detailed information including installation and operation of this optional configuration are

contained in an Application Guide. A copy is included in standard kits and/or inserted in the

front of the binder containing this manual if shipped as part of the same order. For

electronic copies of this and any other technical documentation please visit

http://www.bdcast.com/information-center/ and follow navigation on the left side of the

page – authorized login is required.

Troubleshooting 7

Some basic information and troubleshooting steps are included below. If problems persist after basic

troubleshooting steps are taken, please contact RF Technical Services. Contact information is located

on our website at www.bdcast.com and on page iii in the front of this manual.

A fault in any part of the system indicates a complete disruption in normal operation of at least one

part of the system. A fault reset command should always be issued through diagnostics in any user

interface to correct fault conditions once the problem has been identified. If the reset is not

successful or a condition that caused a fault still remains, the fault will re-assert.

An alarm typically indicates an abnormal condition that is expected or should resolve itself. Alarms in

unexpected situations could indicate serious conditions. Alarms that persist for long periods of time

or unexpectedly appear on a regular basis should not be ignored. To get a good feel for what alarms

are expended under which conditions, see the alarm details in the sections that follow.

7.1 Event Log

The system event log can be accessed through the web interface log page or in its raw form

through the eventLog tree in SNMP. An event is defined by its index starting with the first

saved event at index 1, a timestamp from the system’s internal real time clock, an event

identification number, and the sub-system where the event triggered. Some events also have

context-based parameters that are embedded in the description of the event.

7.2 Standby

The STXe Exciter comes with built-in functionality for a standby controller and exciter – see

section 6.2 Standby System Control and Exciter. A system that is in standby is muted and not

actively controlling the transmitter. This mode is not intended in a setup that has a single

system controller and exciter. Standby system control and exciter setups should also be able

to have no more than one unit active at a time.

If a system is stuck in standby mode, this typically indicates a setup problem. Single system

controller and exciter setups require a stub 949-4130 that activates the transmitter. This

must be attached to the BE Interface jack, please see the appropriate section in the

installation and maintenance guide. Dual system controller and exciter setups require a

switcher system, such as our FW Exciter Switcher product series, that connects to both

assemblies through this interface. The switcher must be operated to activate one

controller/exciter.

7.3 Failsafe

An asserted failsafe input on the remote station interface is required for operation of the

system. The intended usage of this input is to make a loop that passes through safety relays

in all critical transmission system components. When any part of the transmission system

becomes unsafe, the circuit should open and de-assert the failsafe on the transmitter. When

a failsafe condition is active, check all systems that are wired into the failsafe circuit.

7.4 Mute

A mute refers to a lack of an RF source in some part of the system, and the affected part

depends on the context of the notification. Mute indications can happen at various stages

for different reasons, and details in system sections below should be considered.

Transmitter mute conditions typically refer to the FM exciter. In internal exciters this

commonly occurs when:

• There is no power to the exciter

• The transmitter is turned off

• The mute input pin on the remote station interface is asserted

• Failsafe input is not asserted

• The BE Interface active input is not asserted

7.5 Internal Exciter Diagnostics

Table 2 – Exciter Diagnostics Details

Fault/Alarm

Description

AFC Unlock Alarm

Automatic frequency control system does not yet have lock.

Modulation Silence

Alarm

This alarm activates when a silence condition is detected in

exciter modulation.

Audio Input Silence

Alarm

This alarm activates when a silence condition is detected at the

exciter input.

Communication Fault

This fault occurs when communication between the system

controller and the internal exciter is nonfunctional.

7.6 Power Amplifier Diagnostics

Table 3 – PA Diagnostics Details

Fault/Alarm

Description

RF Power Supply Fault

This fault activates when a power source failure is detected.

Reflected Power Fault

This fault activates when a sudden increase in reflected power

is detected by hardware in the power amplifier.

VSWR Fault

This fault activates when the measured VSWR is greater than

the maximum VSWR rating of the system any power level

Temperature Fault

This fault actives when the measured internal heat sink

temperature exceeds the safe limit

Current Fault

There is current monitoring on the final stage RF amplifiers. The

PA shuts down when measured current on any of these solid

state amplifiers exceeds the safe limit.

Hardware Fault

This is an internal self-report of problems in PA control

hardware.

Communication Fault

This fault occurs when communication between the system

controller and the PA is lost.

Power Supply DC Alarm

This is a direct connection to a self-reported DC level issue in

any power supply. This asserts when the voltage is too far from

nominal. This is normal behavior when the PA is turned off for

any reason.

Reflected Power

During FM only operation, the PA attempts to lower its output

Fault/Alarm

Description

Foldback Alarm

power when reflected power approaches dangerous levels. This

keeps the transmitter running at reduced power in order to

prevent a reflected power fault.

Temperature Foldback

Alarm

During FM only operation, the PA attempts to lower its output

power when the internal heat sink temperature approaches

dangerous levels. This keeps the transmitter running at reduced

power in order to prevent a temperature fault.

Current Foldback Alarm

During FM only operation, the PA attempts to lower its output

power when the final power transistor current approaches

dangerous levels. This keeps the transmitter running at reduced

power in order to prevent a current fault.

Muted Input Alarm

This alarm activates as a hardware failsafe mechanism when

the measured exciter drive input is below the minimum

threshold for safe operation. The approximately 10 mW

threshold is only for FM-only mode.

Railed Alarm

During FM only operation this indicates a condition where

automatic power control has reached its highest or lowest

possible control value indicating a lack of proper controllability.

AC POWER SOURCE

ANTENNA/

TRANSMITTER

PROGRAM SERVICE

SOURCE(S)

STXe60 ASSEMBLY

RF POWER

AMPLIFIER

PA CONTROL

CONTROL

INTERFACES

SYSTEM

CONTROLLER/

EXCITER

CONTROL

COMMUNICATIONS

AUDIO CHANNEL(S)

RF PATH

AC OR DC POWER

KEY

FAN

POWER

SUPPLY

POWER REGULATOR

MAIN POWER

SUPPLY

Figure 10 – STXe60 System Block Diagram

BEI Electronics 7EPTX-STX60 60W LPFM Broadcast Transmitter User Manual Exhibit D Users Manual per 2 1033 c3

BEI Electronics, LLC 60W LPFM Broadcast Transmitter Exhibit D Users Manual per 2 1033 c3

Exhibit D Users Manual per 2 1033 c3

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