Bird Technologies 429-83H-01 User Manual

YOU'RE HEARD, LOUD AND CLEAR.

Installation and Operation Manual for Compact Tower-Top Amplifier System Models 429-83H-01-M/T

and 429-83H-01-M-48

Manual Part Number

7-9439

8625 Industrial Parkway, Angola, NY 14006 Tel: [phone] Fax: [phone] [e-mail] www.bird-technologies.com

Warranty

This warranty applies for one year from shipping date.

TX RX Systems Inc. warrants its products to be free from defect in material and workmanship at the time of shipment. Our obligation under warranty is limited to replacement or repair, at our option, of any such products that shall have been defective at the time of manufacture. TX RX Systems Inc. reserves the right to replace with merchandise of equal performance although not identical in every way to that originally sold. TX RX Systems Inc. is not liable for damage caused by lightning or other natural disasters. No product will be accepted for repair or replacement without our prior written approval. The purchaser must prepay all shipping charges on returned products. TX RX Systems Inc. shall in no event be liable for consequential damages, installation costs or expense of any nature resulting from the purchase or use of products, whether or not they are used in accordance with instructions. This warranty is in lieu of all other warranties, either expressed or implied, including any implied warranty or merchantability of fitness. No representative is authorized to assume for TX RX Systems Inc. any other liability or warranty than set forth above in connection with our products or services.

TERMS AND CONDITIONS OF SALE

PRICES AND TERMS:

Prices are FOB seller’s plant in Angola, NY domestic packaging only, and are subject to change without notice. Federal, State and local sales or excise taxes are not included in prices. When Net 30 terms are applicable, payment is due within 30 days of invoice date. All orders are subject to a $100.00 net minimum.

QUOTATIONS:

Only written quotations are valid.

ACCEPTANCE OF ORDERS:

Acceptance of orders is valid only when so acknowledged in writing by the seller.

SHIPPING:

Unless otherwise agreed at the time the order is placed, seller reserves the right to make partial shipments for which payment shall be made in accordance with seller’s stated terms. Shipments are made with transportation charges collect unless otherwise specified by the buyer. Seller’s best judgement will be used in routing, except that buyer’s routing is used where practicable. The seller is not responsible for selection of most economical or timeliest routing.

CLAIMS:

All claims for damage or loss in transit must be made promptly by the buyer against the carrier. All claims for shortages must be made within 30 days after date of shipment of material from the seller’s plant.

SPECIFICATION CHANGES OR MODIFICATIONS:

All designs and specifications of seller’s products are subject to change without notice provided the changes or modifications do not affect performance.

RETURN MATERIAL:

Product or material may be returned for credit only after written authorization from the seller, as to which seller shall have sole discretion. In the event of such authorization, credit given shall not exceed 80 percent of the original purchase. In no case will Seller authorize return of material more than 90 days after shipment from Seller’s plant. Credit for returned material is issued by the Seller only to the original purchaser.

ORDER CANCELLATION OR ALTERATION:

Cancellation or alteration of acknowledged orders by the buyer will be accepted only on terms that protect the seller against loss.

NON WARRANTY REPAIRS AND RETURN WORK:

Consult seller’s plant for pricing. Buyer must prepay all transportation charges to seller’s plant. Standard shipping policy set forth above shall apply with respect to return shipment from TX RX Systems Inc. to buyer.

DISCLAIMER

Product part numbering in photographs and drawings is accurate at time of printing. Part number labels on TX RX products supersede part numbers given within this manual. Information is subject to change without notice.

Bird Technologies Group

TX RX Systems Inc.

Manual Part Number 7-9439

Copyright © 2009 TX RX Systems, Inc.

First Printing: June 2007

Version Number	Version Date
1	06/08/07
2	08/17/07
3	10/10/07
4	02/08/08
5	10/24/08
6	09/03/09

Symbols Commonly Used

WARNING

ESD Electrostatic Discharge

CAUTION or ATTENTION

Hot Surface

High Voltage

Electrical Shock Hazard

NOTE

Heavy Lifting

Important Information

Bird Technologies Group

TX RX Systems Inc.

Changes to this Manual

We have made every effort to ensure this manual is accurate. If you discover any errors, or if you have suggestions for improving this manual, please send your comments to our Angola, New York facility to the attention of the Technical Publications Department. This manual may be periodically updated. When inquiring about updates to this manual refer to the manual part number and revision number on the revision page following the front cover.

Contact Information

Sales Support at 716-217-3113

Customer Service at 716-217-3144

Technical Publications at 716-549-4700 extension 5019

Bird Technologies Group

TX RX Systems Inc.

Table of Contents
General Description ............................................................................................	1
Unpacking ............................................................................................................	4
Pre-Installation Checkout ...................................................................................	4
Mechanical Inspection .......................................................................................	4
Initial Power-up Test ...........................................................................................	5
Bench Testing .....................................................................................................	6
Installation............................................................................................................	8
Base to Tower-Top Communications .................................................................	8
Test Transmission Line ......................................................................................	9
Installing the System ..........................................................................................	9
Installing the Tower-Top Box .............................................................................	9
In-building Lightning Arresters ............................................................................	9
Installing the MCU ............................................................................................	12
Interference and IM Considerations ..................................................................	14
Feedline Data .....................................................................................................	14
Optimizing The System .....................................................................................	15
Attenuation Settings .........................................................................................	15
TTA Net Gain.....................................................................................................	15
Receiver Multicoupler Distribution .....................................................................	15
Setting the TTA NET GAIN Attenuation ............................................................	16
Determining Needed Attenuation ....................................................................	16
Setting Distribution Attenuation .........................................................................	17
Spectrum Analysis ............................................................................................	17
Procedure for Spectral Analysis......................................................................	19
Operational Tests (Sensitivity and Degradation) ...........................................	19
Front Panel Test Port ........................................................................................	19
Tower Top Amplifier Inputs................................................................................	19
Static System Sensitivity ...................................................................................	19
Measuring Static Sensitivity (Load Connected) .................................................	19
Effective System Sensitivity...............................................................................	21
Measuring Effective Sensitivity (Antenna Connected).......................................	22
Degradation .......................................................................................................	23
Routine Operation .............................................................................................	23
Amplifier Monitoring ...........................................................................................	23
LCD Display.......................................................................................................	23
Current Draw ...................................................................................................	23
Test Cable Connection ....................................................................................	23
TTA Temperature ............................................................................................	23
Software Version .............................................................................................	23
Front Panel LEDs ..............................................................................................	24
Form-C Contacts ...............................................................................................	24
Alarms ................................................................................................................	24
The Test Mode ...................................................................................................	24
Set LNA X Active ...............................................................................................	24
Terminate LNA X ...............................................................................................	25
Un-Terminate LNA X .........................................................................................	25
System Troubleshooting ..................................................................................	25
Performance Degradation ................................................................................	25
Hardware Problems ..........................................................................................	25
Lightning and Lightning Arresters ...................................................................	26
Vandalism .......................................................................................................	26
AC Line Fuse (Model 429-83H-01-M) ...............................................................	26

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Disconnected Cables ........................................................................................	26
Periodic Maintenance........................................................................................	27
Recommended Spare Parts ..............................................................................	27
Optional Equipment ..........................................................................................	27
Narrowband Filter ..............................................................................................	27
Multicoupler Expansion Deck ............................................................................	28
Figures and Tables
Figure 1: Front view of the tower-top box ............................................................	1
Figure 2A: Top view of the multicoupler unit (MCU) ............................................	2
Figure 2B: Front view of the MCU .......................................................................	2
Figure 2C: Back view of the MCU .......................................................................	2
Figure 3: Cable connections for system components ..........................................	4
Figure 4: Initial power-up test ...............................................................................	5
Figure 5: Boot-up sequence .................................................................................	6
Figure 6: Default display .......................................................................................	6
Figure 7: Menu selections ....................................................................................	7
Figure 8: Test equipment interconnection for “bench testing” .............................	8
Figure 9A: System installation guidelines ..........................................................	10
Figure 9B: System installation guideline notes...................................................	11
Figure 10: Tower-top box mechanical details ......................................................	9
Figure 11: Application of rubber splicing tape ...................................................	12
Figure 12: Lightning Arrester ..............................................................................	12
Figure 13: Optional Data Network Protector.......................................................	13
Figure 14: Alarm terminals ................................................................................	14
Figure 15: Testing the output spectrum .............................................................	18
Figure 16: Maximum signal level mask .............................................................	18
Figure 17: Calculating actual sensitivity .............................................................	20
Figure 18: Measuring sensitivity through the test port .......................................	21
Figure 19: Optional filter interconnect diagram ..................................................	28
Figure 20: Optional multicoupler expansion deck ..............................................	28
Table 1: System Specifications .............................................................................	1
Table 2: Tower Box Specifications.........................................................................	3
Table 3: Multicoupling Unit Specifications.............................................................	3
Table 4: Bench Test Results..................................................................................	6
Table 5: Optimum Total TTA NET GAIN ..............................................................	16
Table 6: Distribution Attenuation Settings ...........................................................	17
Table 7: Amplifier Status Troubleshooting Guide ................................................	22
Table 8: Typical Current Readings ......................................................................	23
Table 9: Loss of Sensitivity Troubleshooting Guide ............................................	26
Table 10: Disconnected Cables ..........................................................................	27
Table 11: Optional Narrowband Filters................................................................	27

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Appendixes
Appendix A: Front Panel Ethernet Connectivity .................................................	29
Ethernet Connectivity ..........................................................................................	29
Direct Connection ..............................................................................................	29
Required Equipment ........................................................................................	29
Procedure ........................................................................................................	29
Networked Connection ......................................................................................	30
Required Equipment ........................................................................................	32
Procedure ........................................................................................................	32
TTA Network Port Security ................................................................................	34
Data Encryption ...............................................................................................	34
SNMP Support Disabled..................................................................................	34
Telnet Security .................................................................................................	34
Changing the Telnet Port Password...................................................................	35
Appendix B: Changing your Service Computer IP Address ...............................	36

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GENERAL DESCRIPTION

Your TXRX Systems Inc. Tower Top Amplifier System provides the highest degree of reliability available in a Tower Top Amplifier (TTA). The system uses quadrature-coupled amplifiers (also called balanced amplifiers) to create a redundant amplifier configuration in both the tower box and the receiver multicoupling unit (MCU). Each quadamplifier provides two simultaneously used, essentially parallel paths of amplification. Failure of one of these paths of amplification results in an overall gain reduction of only 6 dB.

The system also supplies automatic backup-ampli- fier switching in the tower top box. Fault detection circuitry continuously monitors the DC power operation of the primary quad-amplifier and automatically switches to the identical secondary quadamplifier if conditions indicate a primary malfunction. If the secondary quad-amplifier malfunctions, operation switches to whichever quad-amplifier is still providing some gain due to operation of one of its amplification paths. Fault detection circuitry also

Amplifier / Filter

Assembly

3-21548

Tuning Screw

DO NOT ADJUST

Surge

Suppressor

8-21514

provides at-a-glance status reporting, with frontpanel LED’s and an LCD display. The system specifications for the tower top amplifier are listed in Table 1.

Parameter	Specification
Bandwidth	792 - 824 MHz
Noise Figure	2.9 dB typ, 3.5 dB max
3rd order IIP	> 15.0 dBm
TTA Net Gain	Fully settable by
	electronic attenuator
Rejection	110 dB Min, 120 db Nom
	@776 and 851 MHz
AC Current
(model 429-83H-01-M)	340 mA (typ) @120 VAC
DC Current
(model 429-83H-01-M-48)	780 mA (typ) @ 48 VDC

Table 1: System specifications.

13 dB TTA Net Gain and

maximum 6 dB transmission line loss assumed

Door

Clamp

Surge

Suppressor

8-21183

Surge

Suppressor

8-21549

Figure 1: Front view of the tower-top box (door removed for clarity).

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3-21453	8-21515 Power Supply (model 429-83H-01-M)		3-21476
Front Panel Board	3-21516 DC-DC Converter (model 429-83H-01-M-48)		Front Ethernet Board
(under shroud)			(under shroud)
3-21450
Distribution Amp

3-21496 Rear Panel

Board

3-18173	3-18171	3-18171
4-Way Divider	8-Way Divider	8-Way Divider

Figure 2A: Top view of the Multicoupling Unit (MCU). Model 429-83H-01-M shown.

	LAN Port		Status LED’s	Contrast	Up		Cancel
				Adjust	Button		Button

Amplifier Select	Display	Down	Enter	Test
Buttons		Button	Button	Port

Figure 2B: Front view of the MCU. Model 429-83H-01-M shown.

Ground				To additional 8-way dividers
	Test		Transmission	on optional expansion deck.
				Terminate when unused.
	cable		cable

	CAT-5
	Cable		Alarm
		Terminals
	here

AC or DC Cord

(model dependent)

To station receivers	To station receivers
Unused ports do not	Unused ports do not
require termination	require termination

Figure 2C: Back view of the MCU. Model 429-83H-01-M shown.

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The quad-amplifier in the tower top box amplifies the weak received signal before the signal enters a long and lossy transmission line, thus preventing the line loss from degrading the signal-to-noise ratio. The quadrature amplifiers have a separate power circuit for each half of the amplifier which provides component redundancy as well as unsurpassed IM performance. Microprocessor controlled fault detection circuitry in the tower top box provides continuous monitoring and switching of each quad amplifier while sending operational data to the base unit front panel for at-a-glance status reporting and form-C contact switching for alarm integration. Included in the tower top box is a pre-

Electrical Specifications

Frequency Range	792 to 824 MHz
Net Gain	23 dB
Noise Figure (typ /max)	2.7 / 3.0 dB
Backup Amplifier Switching	Solid State RF Switch
Integrated Test Port	45 dB
Isolation
Preselector Type	7-pole TEM Bandpass
	with cross-couplings
Loss	<0.8 dB
Rejection	>60 dB @ 776 and 851 MHz
LNA Type	2-stage Quadrature
	integrated into filter
Gain	26 dB
Noise Figure	1.2 dB
3rd Order Input IP	18 dBm
Impedance	50 Ohms
Antenna Port VSWR	2 : 1
Power Requirements	12 VDC @ 1.25 A
Lightning Protection	Impulse Suppressor on all
	external connectors
Operating Temp Range	-30°C to +60°C
Mechanical Specifications
Enclosure	Modified NEMA 4x:
	Stainless steel
	weather resistant
Connectors	N -female
Dimensions (HWD)	18” x 6” x 6”
not including mounting tabs	(457 x 152 x 152 mm)
and connectors
Net Weight	20 lbs (9.1 kg)

Table 2: Tower box specifications. Values are typical unless noted otherwise.

selector filter, amplifier “A” and amplifier “B,” switching circuitry, control board and PolyPhaser surge suppressors (see Figure 1). The specifications for the tower box are listed in Table 2.

The ground-mounted MCU shown in Figures 2A through 2C is intended for 19-inch rack mounting. It houses amplifier and signal distribution assemblies, alarm indicators, a power supply or DC-DC

Electrical Specifications

Frequency Range	792 to 824 MHz
Multicoupler Net Gain	+1 dB typ; 0 dB min
Distribution Amp Type	Quad-Coupled dual stage
Gain	23 dB
Noise Figure	4 dB
1 dB compression point	27 dBm
3rd Order Output IP	46 dBm
Number of Outputs	16 or 32
Split Loss	18 dB
Impedance	50 Ohms
VSWR	<2 : 1
Connectors
to TTA	N - Female
to BTS	BNC - Female
Test Port input	BNC - Female
TTA NET GAIN	0 to 15.5 dB
electronic attenuator	in 0.5 dB steps
DISTRIBUTION	0 to 3 db
electronic attenuator	in 0.5 dB steps
Alarm / Warning Contacts	Two Form-C Contacts
	Nominal 2A @ 30 VDC
	or 0.5A @125 VAC
I/O	Ethernet
Power Requirements
Model 429-83H-01-M	90 - 240 Vac @ 50/60 Hz
Model 429-83H-01-M-48	-48VDC
Operating Temp Range	0°C to + 50°C
Mechanical Specifications
Enclosure	Standard EIA 19” Rack Mount
Dimensions (HWD)	1 RU x 19” x 14”
	(38 x 483 x 356 mm)
Net Weight	10.5 lbs (4.8 kg)

Table 3: Multicoupling Unit specifications. Values are typical unless noted otherwise.

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converter, and a display panel to provide visual feedback on the system’s operating status. The specifications for the MCU are listed in Table 3. Also included in the system is a webpage user interface for controlling and monitoring of amplifier currents, alarms, and attenuators. The webpage user interface is accessed through the front panel LAN connector. Refer to Appendix A for instructions on accessing this feature.

UNPACKING

Each major component of the TTA system is individually packaged and shipped via motor freight or UPS. It is important to report any visible damage to the carrier immediately. It is the customer's responsibility to file damage claims with the carrier within a short period of time after delivery (1 to 5 days).

PRE-INSTALLATION CHECKOUT

The following pre-installation tests should be performed after unpacking the system to verify nothing has loosened during transit. Additionally, the system should be made operational on the bench with all components at ground level to verify proper electrical performance. Figure 3 illustrates all of the cable connection points for both the tower top box and the MCU.

The tower top box should NOT be NOTE installed on the tower until all of the pre-installation tests are successfully

completed.

Mechanical Inspection

Open the tower top box by loosening all the doorclamp locking screws and rotating the clamps to

Tower Top Box

	To	To
	Station Receivers	Station Receivers
	Test
	Port Trans
	To
	120	MCU
	VAC
	Main

CAT-5e Cable

Lightning Arrester	Test			Main
	Port			Transmission
TX RX part no.8-21550
	Test
	Main
		Antenna

Figure 3: Cable connections for system components. Model 429-83H-01-M shown.

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Tower Top Box

Test Ant

Main

Front

Panel

Test

Port

CAT-5e
Cable
Lightning Arrester
TX RX part no. 8-21550	MCU

Figure 4: Initial power-up test.

release the door. Make sure that all of the connectors are tight. In addition, it is advisable to check the tightness of the hold-down screws for the various assemblies to insure nothing loosened during shipment. Likewise, check all of the cable connections on the MCU to insure they are all properly mated to their associated plugs.

CAUTION: The wide band filter in the tower top box is factory tuned and must not be field adjusted. Field tuning of this filter is not required. Do not adjust the tuning slugs of the amplifier/filter assembly.

Initial Power-Up Test

To perform the initial power-up test the system should be temporarily interconnected at ground level using short cables. Figure 4 shows the tem-

porary equipment hookup for initial power-up testing.

Once the equipment is temporarily interconnected then power is applied to the system by plugging the MCU’s AC cord into a suitable AC outlet (model 429-83H-01-M) or connecting the DC power cable to a suitable -48 VDC supply (model 429-83H-01- M-48). The following start-up sequence occurs.

1)At turn-on, the three front panel status LED’s will all glow a steady red while the display panel shows a row of solid boxes on the top display line. This will last for about 10 seconds while the systems micro-controllers boot-up.

2)During the next 5 seconds the base unit (MCU) will establish communications with the tower box. The front panel status LED’s will occasionally flash green. The display panel will present the message “Connecting to Tower Controller” and then will briefly flash the MCU’s current software version. See Figure 5.

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Figure 5: MCU software version is displayed briefly during the boot-up sequence.

3)After the power-up sequencing is complete the screen should show the default display as shown in Figure 6. The status LED for each active amplifier will glow a steady green and the status LED for the inactive (stand-by) LNA will be dark.

Figure 6: Default display.

The tower top amplifier system is software directed so control of the system is accomplished via user interface with the front panel using the display screen and the four menu selection buttons. A flow chart showing all of the possible user menu selections is shown in Figure 7.

Bench Testing

The purpose of the bench test is to verify that all of the system components are working correctly and to measure the systems sensitivity before climbing the tower to mount the tower top box. One station receiver is selected and the test is performed at this frequency. Short temporary cables are used to interconnect all components. A SINAD meter is used for the test (or a bit error rate meter if required) along with a signal generator.

1)The stand-alone receiver sensitivity is measured and recorded first. Record the value in

Table 4.

2)Connect the equipment as shown in Figure 8. Be sure that the signal generator is setup for a 3 KHz deviation with a 1000 Hz tone (analog) or proper pattern for BER testing.

Test Performed	Result
Stand Alone
Receiver
Sensitivity	dBm
* Bench Test
Static
Sensitivity	dBm
Model Number
(Tower Top Box)
Serial Number
(Tower Top Box)

Table 4: Bench Test Results.

* Default “TTA NET GAIN“ Attenuation (3.0 dB) * Default “DISTRIBUTION” Attenuation (1.0 dB)

3)Measure and record the systems bench test static sensitivity in table 4. The sensitivity value will vary depending on the amount of internal programmable attenuation selected via software interface. The bench test measurement should be taken with the default values selected for “TTA NET GAIN” attenuation (3.0 dB) and “DISTRIBUTION” attenuation (1.0 dB). These are the factory default settings that are programmed into your system when you first turn it on.

4)Select the other tower top amplifier and check that the bench test static sensitivity value remains nearly the same. This will insure that both amplifiers in the tower top box are functioning properly. To select an alternate towertop amplifier press the associated amplifier select button on the front panel, the status LED will begin to flash, then press the ENTER button to finalize the selection.

5)If the tower box door is opened during the installation it is important to re-tighten the doorclamp locking screws uniformly so that the door gasket seal is maintained. Tighten each clamp about half-way, then start back at the first clamp and fully tighten each one in the same order. Tighten with a hand tool only. Insure that the moisture vent holes at the bottom of the box are unobstructed.

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429-83H-01-M Menu System

429-83H-01-M

TX RX SYSTEMS INC

LNA X ACTIVE

A CURRENT XXXmA

B CURRENT XXXmA

BASE CURRENT

XXXX mA

TEST CABLE

CONNECTED

NOT CONNECTED

TTA TEMPERATURE

+/- XX DEGREES C

BASE V X.XX

TOWER V X.XX

INITIALIZE

ENTER TO RESTART

TEST

ENTER TO SELECT

ATTENUATORS

ENTER TO SELECT

DEFAULT

KEY

DISPLAY

C

PRESS CANCEL KEY

E

PRESS ENTER KEY

SET LNA A ACTIVE

PRESS UP-ARROW KEY

ENTER TO CONFIRM

C

PRESS DOWN-ARROW KEY

PRESS EITHER ARROW KEY

SET LNA B ACTIVE

YELLOW INDICATES

ENTER TO CONFIRM

C

RECORDABLE VALUE

TERMINATE LNA A

AS AN EASY REFERENCE

ENTER TO CONFIRM

C

RECORD VALUES HERE

TTA NET GAIN

TERMINATE LNA B

DISTRIBUTION

ENTER TO CONFIRM

C

MAIN LINE LOSS

UNTERM LNA A

TEST LINE LOSS

ENTER TO CONFIRM

C

STATIC W/LOAD

REFERENCE W/ANT

UNTERM LNA B

C

ENTER TO CONFIRM

NOTE:

After pressing the ENTER Button the MCU

will re-boot, then return to the Default Display.

Return to

E

Default

Display

Automatic Mode

C

E

TTA NET GAIN

E

AUTO MODE

Manual Mode

C

C

TTA NET GAIN

TTA NET GAIN

DISTRIBUTION

DISTRIBUTION

E

E

E

E

ENTER TO ADJUST

X.X dB

ENTER TO ADJUST

X.X dB

E

NOTE: Use

arrow to adjust

NOTE: Use

arrow to adjust

FEEDLINE DATA

C

C

MAIN LINE LOSS

MAIN LINE LOSS

TEST LINE LOSS

TEST LINE LOSS

ENTER TO SELECT

E

ENTER TO ADJUST

E

X.X dB

E

ENTER TO ADJUST

E

XX.X dB

E

NOTE: Use

arrow to adjust

NOTE: Use

arrow to adjust

SENSITIVITY

C

C

E

STATIC W/LOAD

E

STATIC W/LOAD

REFERENCE W/ANT

E

REFERENCE W/ANT

ENTER TO SELECT

ENTER TO ADJUST

-XX.X dB

E

ENTER TO ADJUST

-XX.X dB

E

NOTE: Use

arrow to adjust

NOTE: Use

arrow to adjust

Figure 7: 429-83H-01-M menu selections.

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