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Kaval Telecom Inc.

DCM000000001

•

BLOCK DIAGRAM

REJECT FILTER #2

UPLINK DIRECTION

IN BUILDING

ANTENNA

COOLING FANS

VENTILATION

INPUT

AC POWER

TERMINAL BLOCK

VENTILATION

BDA

SUPPLY

28V POWER

CONTROLLER

ROOF TOP

DOWNLINK DIRECTION

PA #1

REJECT FILTER #1

PA #2

BOOSTER #1

BOOSTER #2

Power and Control Connections

-------

RF Connections

____

BDA Controller :

An enclosed unit with microcontroller, LED indicators, buttons, and two-line display.

Temp Sense & Cooling Fans :

Controlled by the BDA Controller to ensure safe and reliable operation.

28V Power Supply :

Providing all DC Power, with optional Gell-Cell Battery Backup.

Duplexers :

Isolating Downlink and Uplink Frequencies, and coupling to antennas.

Reject Filters :

Installed if required to eliminate feedback.

Boosters :

High Gain (11 to 65 dB) Linear Amplifiers supplying up to 1 Watt of RF Power. The
basic gain is adjustable via the BDA Controller over a 33 to 65 dB range, and an
Automatic Gain Control (AGC) provides an additional 23 dB range.

PA Power Amplifiers :

Optional Linear Power Amplifiers providing 15 dB of additional gain, and up to 20 Watts
of RF Power.

Содержание BDA-1000

Страница 1: ...CM000000001 60 GOUGH ROAD MARKHAM ONTARIO L3R 8X7 Tel 905 940 1400 Toll Free 888 86KAVAL Fax 905 946 3392 http www kaval com USER MANUAL FOR BI DIRECTIONAL AMPLIFIERS 800 900 MHz MODEL BDA 1000 DCM000000001 Revision 1 May 27 1999 ...

Страница 2: ...ler User Interface 9 LED and Audible Indicators 9 Controls 9 Status Displays 10 Current Monitor Status 10 Thermal Monitor Status 10 AGC Status 10 Master Status 10 Menus 11 Main Menu 11 Gain Menu 12 Uplink Downlink Booster Menus 12 Uplink and Downlink PA Menus 13 AGC Menu 13 Temperature Menu 13 Fan Select 13 Battery 14 Controller Menu 14 Calibration Menu 14 INSTALLATION 15 FIELD ADJUSTMENTS 15 TROU...

Страница 3: ...l Page 3 Kaval Telecom Inc DCM000000001 FCC NOTICE ...

Страница 4: ...Donor Transceiver Site and are equipped with their own antenna systems one to communicate with the Donor Transceiver Site and the other s to communicate with radio equipment in the area with coverage deficiency For proper BDA System operation with no feedback problems the RF isolation between the roof top antenna and the indoor antenna s must exceed the net system gain by at least 12 dB Note that ...

Страница 5: ...Sense Cooling Fans Controlled by the BDA Controller to ensure safe and reliable operation 28V Power Supply Providing all DC Power with optional Gell Cell Battery Backup Duplexers Isolating Downlink and Uplink Frequencies and coupling to antennas Reject Filters Installed if required to eliminate feedback Boosters High Gain 11 to 65 dB Linear Amplifiers supplying up to 1 Watt of RF Power The basic g...

Страница 6: ...0 dB with Booster PA Gain Adjustment 31dB in 1dB steps 1 dB Compression Point 27 dBm with Booster only 40 dBm with Booster PA 3 rd Order Intercept Point IP3 37 dBm with Booster only 50dBm with Booster PA Impedance 50 ohms Nominal VSWR 1 5 1 Max BDA Controller Features Microprocessor Controller Current Monitoring for 2 Boosters 2 PA s 2 Fans Full Gain Control Battery Backup Control Charging Electri...

Страница 7: ...Bm 6 21 3 dBm 8 19 5 dBm 10 18 1 dBm Number of Channels Maximum Output Power per Single Channel for Uplink or Downlink Using only a Booster 1 27 0 dBm 2 20 1 dBm 4 15 4 dBm 6 12 7 dBm 8 10 8 dBm 10 9 4 dBm Note Above levels are established with AGC disabled De ratings are based on values calculated using EIA standard PN2009 Actual Amplifier performance may exceed the above criteria BOOSTER AUTOMAT...

Страница 8: ...o the Boosters and provides monitored DC power for the Boosters and PA s Overall dimensions of the case are 9 including flanges x 3 5 x 1 25 The heatsink extends about 1 75 inches above the case and is 4 inches wide BDA OK BATT PA AGC BOOST PA DOWNLINK UPLINK BDA CONTROLLER PWR FAIL TEMP FAN ON OFF POWER EXIT SELECT ADJUST BATT BOOST The BDA Controller display is a 2 line by 20 character Vacuum Fl...

Страница 9: ...the user setting for output level target When lower targets are set the AGC will begin to act at lower input levels When AGC is disabled the LED does nothing If the Input Signal exceeds the AGC ability to reduce gain an overload condition exists and the AGC LED blinks rapidly DNLINK AGC Operates the same as the Uplink AGC LED but for the Downlink TEMP Lights when the BDA system temperature as dete...

Страница 10: ...n the word Over appears instead of a number Up B Up P Dn B Dn P 0 65 Over 0 60 2 35 Thermal Monitor Status This Screen shows current temperature fan and battery status Temperature readout is in degrees Celsius If an over temperature condition exists temperature will flash Each fan has an indication of On Off or Fail Battery voltage is displayed in volts to a resolution of 10 mV If battery is not i...

Страница 11: ...e next digit and enters it When the third digit is entered and the Password is correct the Main Menu becomes available If an incorrect Password is entered then the message Wrong Password appears for a few seconds and the user must start again If the Password is set to 000 disabled the Main Menu is available immediately Enter Password 4 Main Menu entries are used to group Functions by category The ...

Страница 12: ...e max current setting If the minimum current setting is raised above the maximum current setting the maximum current setting is pushed up and kept 50 mA higher Current settings use 50 mA increments Maximum gain setting is 80 dB This applies to Booster gain not System Gain Booster Gain entries should account for losses before the booster Menu selections are as follows with typical data Enable Yes M...

Страница 13: ... over temperature threshold and recovery temperature threshold The recovery temperature is the temperature that the system has to cool down to for Boosters and PA s to be re energized A third menu item allows user to select whether an over temperature will actually cause a system shutdown Menu entries are Temp Limit 60C Recovery Temp 40C Temp Shutdown Yes Fan Select This is a single entry Menu whi...

Страница 14: ...shown causes a test pattern to be shown on the VFD and all LEDs light up all at once then are lit individually in sequence If the Factory Defaults function is selected a confirmation screen appears asking the user to toggle the entry to yes and hit select before memory is cleared Selecting Set Password allows user to enter a new password The entry must be made a second time to confirm In this case...

Страница 15: ... Electrical Wiring Regulations l AC Power and RF Connections should be installed with all standard installation practices for lightning protection This includes the grounding and electrical bonding together of all equipment racks and cabinets in the room It also includes a grounding of the primary antenna cable and the installation of proper surge suppression lightning arrestor equipment at the en...

Страница 16: ... and observe the BDA Controller display If none of the Status LED s are lit and there is nothing on the Display then the AC Power and or Battery Backup Power if present has been lost disconnected the BDA s DC Power Supply has failed or the BDA Controller itself has failed Check the AC Circuit Breaker feeding the AC circuit that powers the BDA or possibly the AC plug has been pulled If AC is presen...

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