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TX RX Systems Inc.                               Manual 7-9487-3                                 05/05/11                                  Page 33

amplifier and automatically switches to the identical
secondary quad-amplifier if conditions indicate a
primary malfunction.

A loss of communications (along the main trans-
mission line) between the microprocessors in the
base unit and tower box will cause the front panel
A and B indicator LED’s to flash RED. The ALARM
Form-C contacts located at the back of the unit will
also change state.

THE TEST MODE

The TEST sub-menu allows the field engineer to
choose the active tower top amplifier as well as
control the input of each of the tower top amplifiers
via software. The base amplifier is always active.
When you use functions in the TEST sub-menu
you are operating the system in the test mode. Be
aware that some of these tests will interrupt the RF
signal path through the tower top box and on-air
signals will not be passed to the station receivers.

We recommend that when you are in the test mode
and you complete your testing use the CANCEL
button to exit back to normal mode and the default
display. If you exit the test mode without using the
CANCEL button and leave one of the amplifiers in
other than its normal operating condition the mes-
sage “NonFunctional” will appear in the LNA X
ACTIVE sub-menu. As a safety feature the system
will switch out of the test mode and back into the
normal mode of operation after about 9 minutes of
inactivity. Each of the three functions available
through the TEST sub-menu is described below.

Set LNA X Active

Allows the selection of the active amplifier via soft-
ware interface.

1) From  the  TEST  sub-menu  display  use  the

ARROW  button  to  scroll  over  to  the  SET  LNA
“A (or) B” ACTIVE menu choice, depending on
which  amplifier  you  want  to  choose  as  the
active amp, and press the ENTER button. 

2) If you choose to make the already active ampli-

fier  active  again,  the  system  will  return  you  to
the TEST sub-menu. If you choose to make the
non-active  amplifier  active,  then  the  “Test  TTA
Offline”  message  will  appear.  The  RF  signal
path  through  the  tower  top  box  will  be  inter-
rupted  and on-air  signals  will  not  be passed to
the station receivers.

3) Pressing the CANCEL button returns you to the

default  display.  Whichever  amplifier  you  had
selected to be active in the TEST sub-menu will
now  be  the  active  amplifier  back  in  the  normal
mode and on-air signals will again pass through
to the station receivers.

If  left  unattended,  after  about  9
minutes the system will switch out
of the test mode and back into the
normal  mode  of  operation.  The
amplifier selected while in the test
mode  will  now  become  the  active
amp  and  on-air  signals  will  again
pass through to the station receiv-
ers.

Terminate LNA X

Allows you to connect the input of either of the
tower top amplifiers to its internal 50 ohm load.

1) From  the  TEST  sub-menu  display  use  the

ARROW  button  to  scroll  over  to  the  TERMI-
NATE  LNA  “A  (or)  B”  menu  choice  and  press
the ENTER button. 

2) If you choose to terminate the input of the non-

active amplifier the system will return you to the
TEST sub-menu. This is the normal behavior of
the  system,  having  the  input  of  the  non-active
amplifier  terminated  to  a  50  Ohm  load.  If  you
choose  to  terminate  the  input  of  the  active
amplifier  then  the  “Test  TTA  Offline”  message
will  appear.  The  RF  signal  path  through  the
tower top box will be interrupted and on-air sig-
nals will not be passed to the station receivers.

If  left  unattended,  after  about  9
minutes the system will switch out
of the test mode and back into the
normal  mode  of  operation.  On-air
signals  will  again  pass  through  to
the station receivers.

3) Pressing the CANCEL button returns you to the

default  display  and  on-air  signals  will  again
pass through to the station receivers.

Un-Terminate LNA X

Allows you to completely disconnect the input of
either of the tower top amplifiers. The amplifier will
no longer be connected to either the antenna or its
internal 50 ohm load.

NOTE

NOTE

Summary of Contents for 428B-83H-01-C-110

Page 1: ...NY 14006 Tel 716 549 4700 Fax 716 549 4772 sales birdrf com www bird technologies com Installation and Operation Manual for Compact Tower Top Amplifier System Model 428B 83H 01 M 48 and 428B 83H 01 C...

Page 2: ...eed 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...

Page 3: ...al Shock Hazard Important Information CAUTION or ATTENTION High Voltage Heavy Lifting Bird Technologies Group TX RX Systems Inc NOTE Manual Part Number 7 9487 Copyright 2011 TX RX Systems Inc First Pr...

Page 4: ...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...

Page 5: ...ngs 21 Reserve Gain 21 Receiver Multicoupler Distribution MCU Only 21 Setting the MCU Reserve Gain Attenuation 21 Setting the CMU Reserve Gain Attenuation 22 GTR8000 Attenuator Adjustment 23 Reserve G...

Page 6: ...re 6 Top view of the CMU 7 Figure 7 Back view of the CMU 7 Figure 8 Functional block diagram of the CMU 8 Figure 9 System cable connections 9 Figure 10 Initial power up test 10 Figure 11 Boot up seque...

Page 7: ...ecifications 2 Table 3 MCU Specifications 4 Table 4 CMU Specifications 4 Table 5 Bench Test Results 11 Table 6 Distribution Attenuation Settings 24 Table 7 Amplifier Status 31 Table 8 Typical Current...

Page 8: ...Table of Contents Manual 7 9487 3 05 05 11...

Page 9: ...nted on the tower close to the antenna The second com ponent of the system is the base control unit which is located in the control room The system also supplies automatic backup ampli fier switching...

Page 10: ...or at a glance status reporting and form C contact switching for alarm integration Included in the tower top box is a pre selector filter amplifier A and amplifier B switching circuitry control board...

Page 11: ...ol unit you have The front panel of your base control unit is the same for both MCU and CMU styles MCU The MCU style base control unit is designed to include a receiver multicoupler function in additi...

Page 12: ...e Reserve Gain electronic attenuator 0 to 15 5 dB in 0 5 dB steps Alarm Contacts Two sets of Form C Con tacts Nominal 2A 30 VDC or 0 5A 125 VAC I O Ethernet Power Requirements Model 428 83H 01 C 110 M...

Page 13: ...Terminals Expansion Port To Station Receivers Ground Lug Test Cable here Main Cable here Figure 3 Top view of the MCU 3 23339 16 Way Divider w Expansion Port 3 22914 Modem Assembly 3 23416 Rear Panel...

Page 14: ...NA B Surge RS 485 Tap DC Tap RS 485 12VDC Antenna Main Test 428B TTA Assembly 792 824 MHz Filter Alarm NC COM NO NC COM NO Alarm Modem DC Inject CPU Front Panel Assembly Expansion Port 16 Way Divider...

Page 15: ...ace Test Cable here Ground Lug RF Out to GTR 8000 Main Cable here Figure 6 Top view of the CMU 3 21532 Filter Attenuator 3 22951 Front Panel Board under shroud 3 21476 Ethernet Board 3 23070 Rear Pane...

Page 16: ...Switch 12VDC 12VDC 3 dB 50 LNA B Surge RS 485 Tap DC Tap RS 485 12VDC Antenna Main Test 428B TTA Assembly 792 824 MHz Filter Alarm NC COM NO NC COM NO Alarm Modem DC Inject CPU Front Panel Assembly V...

Page 17: ...ring the signals are amplified by the active tower top LNA either amp A or B depending on user selec tion before passing through the main transmission line to the ground based control unit The input o...

Page 18: ...cable connection points for both the tower top box and the MCU and CMU base control units The tower top box should NOT be installed on the tower until all of the pre installation tests are successfull...

Page 19: ...ing the display screen and the four menu selection buttons A flow chart showing all of the possible user menu selec tions is shown in Figure 13 Bench Testing The purpose of the bench test is to verify...

Page 20: ...OWER V X XX INITIALIZE ENTER TO RESTART TEST ENTER TO SELECT ATTENUATORS ENTER TO SELECT FEEDLINE DATA ENTER TO SELECT SENSITIVITY ENTER TO SELECT RESERVE GAIN ENTER TO ADJUST MAIN LINE LOSS ENTER TO...

Page 21: ...NSTALLATION The following sub sections of the manual discuss general considerations for installing the system All work should be performed by qualified personal TXRX Systems provides the base control...

Page 22: ...2 Run the main transmission cable as well as the test transmission cable up the tower 3 Mount the tower top box on the tower and con nect the antenna feedline main transmission line and test line to...

Page 23: ...UNDING REQUIREMENTS WARNING Failure to ground the TTA System properly can result in equipment failure caused by electrical surges 1 1 1 1 1 1 6 7 5 13 BNC Test Port Building Entry Point Ground Plate C...

Page 24: ...ING REQUIREMENTS WARNING Failure to ground the TTA System properly can result in equipment failure caused by electrical surges 1 1 1 1 1 1 6 7 5 13 BNC Test Port Building Entry Point Ground Plate Copp...

Page 25: ...ster on test port line customer supplied Motorola part number DS1090501WA Male Female Motorola part number DS1090501WB Female Female 1 2 LDF test port line Installation and grounding must conform to R...

Page 26: ...90501WA male female or DS1090501WB female female The chassis of the arrester should be connected to the master ground buss with a pigtail Installing the Base Control Unit The base control unit is desi...

Page 27: ...ver multicoupler expansion deck to the output ports on the back of the base control unit Figure 22 Alarm terminals Normally open or normally closed screw terminals are available Model 428B 83H 01 M sh...

Page 28: ...to length Once you have determined the main and test line cable loss for your system this information can be recorded in system memory for future reference in the Feedline Data menu selection To save...

Page 29: ...7 9437 When automatic has been selected the message AUTO MODE will be shown on the control unit front panel display when you scroll down the menu choices to the reserve gain value refer to the menu se...

Page 30: ...ll need to be added The total loss of the main line cable and the program mable attenuator must be maintained at 6 dB Additional attenuation may be required in cases where carriers are encountered abo...

Page 31: ...on is additive so a maximum of 31 dB of attenuation would be realized if all of the switches were in the ON posi tion at the same time When the MCU style is connected to the GTR8000 Six Pack you will...

Page 32: ...uipment is powered down The receiver multicoupler distribution atten uation is adjustable from 0 0 to 3 0 dB in 0 5 dB increments To adjust the multicoupler attenuation perform the following 1 Press t...

Page 33: ...Transmit Band The highest carrier that the receive system will consistently see is its own transmitter The preselector of the receive sys tem must adequately remove these carriers to prevent over dri...

Page 34: ...ess than 75 dBm Transmit Band Receive Band Frequency MHz Maximum Signal Level Mask Figure 27 Maximum permissible signal levels of receiver outputs of the TTA Base Control Unit Test Ant Main Test Trans...

Page 35: ...puts of the tower top amplifier In addition the input of each tower top amplifier can also be switched to an internal 50 Ohm load for testing purposes The front panel test port remains connected throu...

Page 36: ...r sig nals will again pass through to the station receivers 7 From the default display use the ARROW but tons to scroll to the SENSITIVITY menu choice then press the ENTER button 8 Use the ARROW butto...

Page 37: ...nt Panel Test Port Figure 30 Using the test port to measure sensitivity of the TTA system Model 428B 83H 01 C 110 shown Ant Test Test Trans Main Front Panel Test Port MCU Tower Top Box Antenna 12 dB S...

Page 38: ...on 5 Use the ARROW buttons to scroll over to the REFERENCE W ANT menu choice and press the ENTER button 6 Use the ARROW buttons to dial in the effective sensitivity value and press the ENTER button to...

Page 39: ...menu The recommended normal operating temperature range for the tower top box is 30 to 60 degrees Celsius The tower top ampli fier will function up to 70 C without shutting down However the specificat...

Page 40: ...elays and the common terminals will then be connected to the normally closed termi nals This is the normal mode of operation When an alarm condition occurs the CPU will de energize the relays and the...

Page 41: ...will return you to the TEST sub menu If you choose to make the non active amplifier active then the Test TTA Offline message will appear The RF signal path through the tower top box will be inter rupt...

Page 42: ...re likely to indicate a hardware problem which may produce an alarm condition Table 9 is a trou bleshooting guide that is read from top to bottom to narrow down the possible causes The guide con tains...

Page 43: ...illuminates when the supply is turned on PERIODIC MAINTENANCE The following procedures can be followed as part of a periodic maintenance program 1 TX RX Systems Inc recommends that tests for establis...

Page 44: ...in Figure 33 and includes two 16 way dividers that are stacked and mounted on a 19 inch deck A 2 way divider is added to the expansion deck in order to distribute the RF output of the amplifier assemb...

Page 45: ...lters The narrowband filter is designed to be added to the RF signal path just after the distribution ampli fier in the MCU style control unit and just after the RF output port in the CMU style system...

Page 46: ...for future re use if you ever decide to remove the optional filter from your TTA system 2 With the supplied screws mount the preselec tor panel into the 19 inch rack above the control unit 3 Locate a...

Page 47: ...able which is not supplied with the kit However the kit does con tain a BNC N cable which can be used by add ing a BNC N adapter 3 Connect the output port of the filter to the input of the GTR8000 rad...

Page 48: ...MENT Cat 5e Crossover Cable Laptop Computer with a network interface card installed In addition the JAVA run time environ ment version 1 6 0 and a web browser such as Internet Explorer must also be in...

Page 49: ...ty issues such as firewalls Once you have the correct IP address you will need to direct connect to the TTA system as discussed in the earlier section of this appendix and reconfigure the TTA LAN port...

Page 50: ...Blue Blue White Green Brown White Brown Transmit 1 2 Receive 3 6 Transmit 3 6 Receive 1 2 Pins 4 5 7 and 8 are not used Pin Pin TX RX Systems member Bird Technologies Group LAN 1 2 3 4 4 Port Ethernet...

Page 51: ...ing steps 1 Change the control unit s LAN port IP address To do this direct connect your laptop to the control unit as discussed in the earlier section of this appendix titled Direct Connection and f...

Page 52: ...CP IP Winsock 6 Type in the host IP address This is the current address of the TTA factory default is 192 168 1 1 Type in the port number of 9999 see Figure A5 Click the OK tab to complete the TelNet...

Page 53: ...through type as shown in figure A2 to the front panel LAN con nector The TTA system can now be accessed through your network the same as you would any network connected device 12 From your remote com...

Page 54: ...llowing steps 1 Launch HyperTerm on your direct connected laptop or your remote PC 2 Navigate to the Change Setup Menu by follow ing steps 4 through 8 as discussed in the earlier section of this appen...

Page 55: ...ons folder opens double click on the Local Area Connection icon See Figure B3 5 The Local Area Connection Status box will open Single click the Properties tab as shown in Figure B4 Note If you do not...

Page 56: ...TX RX Systems Inc Manual 7 9487 3 05 05 11 Page 48 Figure B2 Select the Network Connections icon Figure B3 Select the Local Area Connection icon...

Page 57: ...TX RX Systems Inc Manual 7 9487 3 05 05 11 Page 49 Figure B4 Select the Properties tab Figure B5 Make sure the Internet Protocol TCP IP choice is highlighted Then select OK...

Page 58: ...TX RX Systems Inc Manual 7 9487 3 05 05 11 Page 50 Figure B6 Select Use the Following IP Address Figure B7 Enter the new IP address and Subnet mask values...

Page 59: ...Watts 50 75 100 125 150 200 250 300 3 25 38 50 63 75 100 125 150 2 5 28 42 56 70 84 112 141 169 2 32 47 63 79 95 126 158 189 1 5 35 53 71 88 106 142 177 212 1 40 60 79 99 119 159 199 238 5 45 67 89 11...

Page 60: ...TX RX Systems Inc Manual 7 9487 3 05 05 11 Page 52 8625 Industrial Parkway Angola NY 14006 Tel 716 549 4700 Fax 716 549 4772 sales birdrf com www bird technologies com...

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