TC-1900(MCPA) DS 3-0-2.pdf

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1900 Base Station Power AmplifierTC-1900MCPA

Information contained in this document is subject to confirmation at time of ordering.http://www.comba-telecom.com

Issued:15Feb12Control: 3-0-2

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Features

High downlink power of 52dBm for extended cell coverage. MCPA with 20MHz Instantaneous Bandwidth can support up multiple downlink

carriers. Supports GSM, EDGE, CDMA and WCDMA signal. Low noise amplifier reduces uplink system noise figure and results in reduced

call drops and improved voice quality. Reduces handset output power and improved BTS uplink receiver sensitivity. Permits local monitoring via PC at tower bottom and remotely by wireless

modem. Alarms can be transmitted to OMC via data link or SMS. Automatic bypass feature permits BTS operation when PA or power supply

fails. Internal Li-ion backup battery ensures alarm messages are transmitted when

power is down. Designed for all outdoor installationwaterproof, damp-proof and omni-sealed

(IP54)

Product DescriptionTC-1900(MCPA) band-selective Base Station Power Amplifier provides both uplink and downlink amplification for multiplecarriers and extends the coverage that decreases the cost and improves the service quality. The unit is fit for outdoorinstallation and can boost the transmitted power to extend cell coverage. The uplink low-noise amplifier (LNA) serves toimprove the receiver sensitivity of the BTS to cope with the extended cell coverage in the downlink.

The unit is powered by both AC and DC power supply options, including 110/220VAC and -48VDC. It consists of duplexers(DPX), uplink LNA, downlink MCPA, RF by-pass switch, Main Control Unit (MCU), distribution board, power supply unit(PSU), surge protector, wireless modem and Li-ion backup battery. Parameter settings can be done locally via a PC withinstalled OMT software, or remotely via wireless modem using OMT or OMC software. Through the wireless modem, thealarm data can be transmitted to the OMC automatically, or be sent as SMS to a predefined cellular device.

Functional Block Diagram

ANT

BTS

Ant 0

Tx/RXA

Downlink/UplinkBy-pass

Downlink/UplinkBy-pass

Rx1Div

B

T

S

ANT1

BTS

Ant 1

MCPA

ATT

TX

/RXB LNA2

LNA1

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Technical Specifications

ElectricalFrequency Range, Uplink MHz 1850 1910

Frequency Range, Downlink MHz 1930 1990

Instantaneous Bandwidth MHz 20

Total Output Power dBm 52 1

Maximum Uplink Gain dB 11 1

Maximum Downlink Gain dB 15 1

In-band Intermodulation dBc -60

Spurious (GSM)9KHz to 1GHz dBm -36/100KHz

1GHz to 12.75GHz dBm -30/1MHz

Spurious (CDMA)

f=885 kHz to 1.25 MHz dBc -45/30kHz

f=1.25 MHz to 2.25 MHz dBm -9/30kHz

f=2.25 MHz to 4 MHz dBm -13/1MHz

Spurious (WCDMA)

f=2.515MHz to 2.715MHz dBm -14/30kHz

f=2.715MHz to 3.515MHz dBm -26/30kHz

f=3.515MHz to 4MHz dBm-26/30kHz

f=4MHz to fmax dBm -13/1MHz

Noise Figure, Uplink dB 3.0

Absolute Maximum RF Input Power, Uplink dBm 10

Absolute Maximum RF Input Power, Downlink dBm 46

Insertion Loss, By-pass Mode dB 1.5

Pass Band Ripple, p-p dB 1.5

Input VSWR 1.5

Impedance 50

Power, Mechanical & Environmental

Dimensions, H x W x D mm 620 x 588 x 240

Weight (approx.) kg 49.5

Power Supply (Options)

VAC 90 265 / 47 63Hz

VDC -48AC Power Consumption (approx.) W 850W

Power Up Waiting Time (approx.) sec 180

MCU Battery Backup Time (approx.) hr 3

Enclosure Cooling Fan

RF Connectors Din-F

Operating Temperature C -25 to +50

Operating Humidity % 95

EMC ETSI EN 301 489-1

Environmental Class IP54

MTBF hr > 50,000

Note: Typical specification at room temperature

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Operation and Maintenance

Using a direct serial connection to a PC, installation and commissioning of the TC-1900 is accomplished by the OMT. Usingthe integrated wireless modem (data or SMS mode), equipment parameters can be monitored and controlled remotely.

Controlled equipment parameters include: Channel No, UL/DL ATT, Soft ON/OFF, Over-Temp Threshold, DL Output PowerThreshold, DL Input Power Threshold and Alarm Report Enable.

Monitored equipment alarms and parameters include: Alarms (LNA, DL PA, Power Down, PSU Fault, Door Open, DL InputPower Low, DL Output Power Low, and Over Temp), UL/DL Gain, DL Input /Output Power.

The TC-1900 has been developed to take advantage of advanced network operation, where the OMC (optional) provides aneffective solution for central monitoring of a group of Comba products.

Outline Drawing

620 240

568

TC-1900(MCPA) DS 3-0-2.pdf

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