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044-xxxxx Rev. x

INSTALLATION & SERVICE

MANUAL

MULTICHANNEL

POWER AMPLIFIER

NTGY81AC

1930-1990 MHz

50 WATTS AVERAGE POWER

04 April 2002

Powerwave Technologies, Inc.

Tel: (714) 466-1000

1801 E. St. Andrew Place

Fax: (714) 466-5800

Santa Ana, CA 92705

Web Site: www.powerwave.com

Содержание NTGY81AC

Страница 1: ...RVICE MANUAL MULTICHANNEL POWER AMPLIFIER NTGY81AC 1930 1990 MHz 50 WATTS AVERAGE POWER 04 April 2002 Powerwave Technologies Inc Tel 714 466 1000 1801 E St Andrew Place Fax 714 466 5800 Santa Ana CA 9...

Страница 2: ...7 Differential IIC Clock Receive and Transmit Connector P3 2 4 2 8 IIC Power Alarms and Controls Connector P4 2 4 2 9 IIC RS485 Power and Other Signals Connector P5 2 6 Section 3 Operating Instructio...

Страница 3: ...ferential IIC Clock Receive and Transmit Connector P3 2 4 2 4 IIC Power Alarms and Controls Connector P4 2 4 2 5 IIC RS485 Power and Other Connector P5 2 6 4 1 NTGY81AC Multichannel Power Amplifier Fu...

Страница 4: ...2 GENERAL DESCRIPTION The NTGY81AC is a linear multichannel power amplifier that operates in the 60 MHz frequency band from 1930 MHz to 1990 MHz It is designed to be mounted in an enclosure with EMI...

Страница 5: ...Input Port Return Loss VSWR 2 1 Max Out of Band Spurious Less than 15 dBm 1 MHz DC Input Power 26 0 5 Vdc 260 mV p p max ripple 500 watts Operating Temperature 15 C to 85 C heatsink temperature Storag...

Страница 6: ...044 xxxxx Rev x 1 3 P1 P4 P5 P3 P2 RF OUT RF IN Figure 1 1 NTGY81AC Multichannel Power Amplifier...

Страница 7: ...the whole installation Circuit breakers should be thermal type capable of handling the maximum anticipated inrush current in a load center with a master switch 2 3 UNPACKING AND INSPECTION This equip...

Страница 8: ...es to matching P1 through P5 connectors Refer to paragraphs 2 5 through 2 9 following 6 Check your work before applying DC voltage to the system Make certain all connections are tight and correct 7 Me...

Страница 9: ...6V_ALARM 26V HPCA alarm input 4 15V_ALARM 15V HPCA alarm input 5 REMOTE_SENSE Remote sense for HPCA connected directly to 26V supply 6 REMOTE_SENSE_RTN Remote sense return for HPCA connected directly...

Страница 10: ...N SIGNAL DESCRIPTION 1 IIC_CLK Differential IIC Clock to the DPM 2 IIC_CLK Differential IIC Clock to the DPM 3 IIC_RX_DATA Differential IIC Receive Data from DPM 4 IIC_RX_DATA Differential IIC Receive...

Страница 11: ...Default status is OPEN upon power up and CLOSED on power down conditions 9 AUX_CTRL2 Contact closure switch on the MCPA but controlled by the MFRM software Default status is OPEN upon power up and CLO...

Страница 12: ...l RS485 link to MTRM 7 MCPA_RX Differential RS485 link from MTRM 8 MCPA_RX Differential RS485 link from MTRM 9 IIC_CLK Differential IIC clock from MTRM 10 IIC_CLK D Di if ff fe er re en nt ti ia al l...

Страница 13: ...les are properly connected CAUTION Before applying power make sure that the input and output of the amplifier are properly terminated at 50 ohms Do not operate the amplifier without a load attached Re...

Страница 14: ...requirements of FCC Part 24 with respect to spurious emissions see table 1 1 Constant gain is maintained by continuously comparing active paths with passive references and correcting for small variati...

Страница 15: ...tion board which gathers the status information of the amplifier and reports to the host system via the RS485 interface when instructed It also protects the MCPA from adverse conditions such as overpo...

Страница 16: ...enance requirements are listed in Table 5 1 Table 5 1 also lists the intervals at which the tasks should be performed Table 5 1 Periodic Maintenance TASK INTERVAL ACTION Inspection Cables and Connecto...

Страница 17: ...5 1 5 4 1 AMPLIFIER PERFORMANCE TEST To perform the test proceed as follows 1 Connect test equipment as shown in figure 5 1 NOTE Do not apply any RF signals at this time AMPLIFIER SPURIOUS EMISSIONS T...

Страница 18: ...044 xxxxx Rev x 5 3 Figure 5 1 NTGY81AC Amplifier Test Setup Diagram...

Страница 19: ...lyzer Span 60 MHz Marker 1 1930 MHz 2 1960 MHz 3 1990 MHz TEST CONDITION MIN MAX FREQUENCY MHz 1 00 NETWORK ANALYZER 1930 1960 1990 1 01 Gain 45 0 dB 49 0 dB 1 02 Gain Flatness 0 dB 0 4 dB 1 25 MHz 1...

Страница 20: ...r equipment To replace a power amplifier module proceed as follows 1 Turn off 26 Vdc power to that specific module 2 Disconnect the two RF cables and connectors P1 through P5 3 Remove 13 screws that s...

Страница 21: ...perative 1 Check for proper power supply voltage MCPA Not Enabled 1 Verify HPA Allow Enable line is high Alarm Output is RS 422 High Verify input RF is within specified power and frequency limits 6 3...