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Operations Manual, HPA3, Mini Compact Outdoor SSPA 

208143 REV - 

49 

5.1.5  Intermodulation Distortion 

 
Intermodulation distortion is one of the most important characteristics of a Solid State power 
amplifier system. Satellite communication systems must comply to certain distortion levels  
depending on the service involved. All production amplifiers are subjected to automated  
intermod testing. This is based on a standard two-tone intermod test in which the intermod 
level (IMD) is measured in dBc with respect to the main tones and the highest third order  
intermod products. 
 
Satcom amplifiers are typically used in some ‘back-off’ condition. This is the operating point at 
which the composite output power is ‘backed-off’ from the amplifier’s P

1dB

, compression point. 

A curve of back-off vs. IMD level is especially useful in the selection of a power  
amplifier or determining the proper output power setting in a Satcom system. 
 
Paradise Datacom recognizes the importance of this back-off characteristic and provides a 
plot of back-off vs. IMD from 1 dB to 10 dB back from the amplifier’s compression point.  

Figure 5-2, Item 

[

3

]

, shows a typical back-off curve from a production test set. 

 

5.1.6  Power Requirements 

 
This test measures the power requirements of the unit over the various voltages appropriate 
for the unit under test. See 

Figure 5-3, Item 

[

1

]

Figure 5-3: M&C, Output Power, Ground, Phase Lock and Misc. Data 

Содержание RA 5785

Страница 1: ...State Power Amplifier Operations Manual 208143 REV RA 5785 11 12 2010 Paradise Datacom LLC Phone 814 238 3450 328 Innovation Blvd Fax 814 238 3829 State College PA 16803 USA Web www paradisedata com E...

Страница 2: ...2 208143 REV Operations Manual HPA3 Mini Compact Outdoor SSPA 2010 Paradise Datacom LLC Printed in the USA...

Страница 3: ...15 2 2 4 1 1 Summary Alarm J4 Form C Contacts 15 2 2 4 1 2 Auxiliary Alarm J4 Form C Contacts 15 2 2 4 1 3 Open Collector Alarm Outputs J4 15 2 2 4 2 Serial I O Control J4 17 2 2 5 Link Port J5 MS311...

Страница 4: ...view 41 4 1 Converter Features 42 4 2 Theory of Operation 43 4 3 Smart Reference Technology 43 4 4 FSK Monitor and Control 44 4 5 Typical System Configuration 45 4 6 IFL Cable Considerations 45 Sectio...

Страница 5: ...ction 8 Remote Control Interface 59 8 0 Serial Protocol Overview 59 8 1 Serial communication 61 8 1 1 Header Packet 61 8 1 1 1 Frame Sync Word 61 8 1 1 2 Destination Address 61 8 1 1 3 Source Address...

Страница 6: ...to browser window 36 Figure 3 17 Enter password default is paradise 37 Figure 3 18 Status and Faults window descriptions 37 Figure 3 19 Communication Settings window descriptions 38 Figure 3 20 Genera...

Страница 7: ...2 BUC RF output phase noise specification 43 Table 4 3 Common Coaxial Cable Characteristics 45 Table 8 1 Interface Selection 60 Table 8 2 Command Byte Values 63 Table 8 3 Data Tag Byte Values 63 Tabl...

Страница 8: ...8 208143 REV Operations Manual HPA3 Mini Compact Outdoor SSPA THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 9: ...dirt and water The reduced size and weight of this amplifier system allow it to be used in a wide variety of installations This amplifier is ideal for mounting on the boom of small antennas or anywher...

Страница 10: ...Monitor Control Software M C J4 Mating Connector MS3116F18 32P Waveguide gaskets dependent on frequency band Sealing tape 87F730 1 5 Safety Considerations Potential safety hazards exist unless proper...

Страница 11: ...put waveguide Maintain a suitable distance from the source of the transmission such that the power density is below recommended guidelines in ANSI IEEE C95 1 The power density specified in ANSI IEEE C...

Страница 12: ...12 208143 REV Operations Manual HPA3 Mini Compact Outdoor SSPA THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 13: ...nches to the over all length of the unit but the width and height remain constant independent of the frequency band of the unit See Figure 2 1 for an outline drawing of a Ku Band Mini Compact Outdoor...

Страница 14: ...to avoid damaging the amplifier 2 2 2 RF Out J2 The amplifier s output is brought out through the waveguide port J2 Caution should be observed here to make sure that the antenna or a suitable termina...

Страница 15: ...permanent connection can be made between J4 Pin B and J4 Pin V 2 2 4 1 Alarms on J4 A variety of alarm signals are present at the M C connector J4 Both Form C relays and open collector outputs are av...

Страница 16: ...no connection D RS232 RS485 Select Closure to Ground Selects Serial Communication Default is RS485 Pull to ground d to enable RS232 E RS485 TX or RS232 OUT Serial TX Output Serial Link Data Port Refer...

Страница 17: ...es with most notebook and desktop personal computers Communication links using RS 232 are typically good up to 30 ft 9 m in length Installations exceeding this length can use the RS 485 mode which wil...

Страница 18: ...ovides 15 VDC and up to 1 Amp current to any external equipment It is a 6 pin MS type connector See Table 2 7 Table 2 7 J8 Auxiliary Power Port Pin Outs Pin Connection Pin Connection A External Fault...

Страница 19: ...f the system s functional blocks This high efficiency cooling system is primarily responsible for the small overall package size and reduced weight of the unit approximately 24 5 lbs or 11 1 kg The co...

Страница 20: ...dise Datacom Mini Compact Outdoor SSPA base unit weighs approximately 24 5 lbs and should be handled with care to avoid scratching the exterior coating and compro mising the unit s corrosion resistanc...

Страница 21: ...ween the bracket and the unit that each bracket is vertical and the top flange of the mounting bracket points away from the unit 3 Place one piece of Uni Strut Item 2 with the open channel up at each...

Страница 22: ...boom onto the protruding All Thread stud ends Secure firmly with a flat washer Item 6 lock washer Item 4 and 1 2 nut Item 5 on each of the four All Thread stud ends Looking from the end of the boom t...

Страница 23: ...defined IP RS 485 or RS 232 communications The units cannot be used simultaneously with multiple communication protocols The user must select one of the four formats Figures 3 1 through 3 4 show the p...

Страница 24: ...Figure 3 5 Figure 3 3 J4 Connections for RS 485 Communications Chassis Ground TX Enable Interface Select 0 Interface Select 1 RS232 RS485 Select Isolated Return for RS232 RS485 RS485 RX RS232 RX RS48...

Страница 25: ...d using these cables all permanent settings must be saved to the unit If changes are not saved the unit will revert back to the state before the Quick Start cables were used 3 2 1 Set PC Configuration...

Страница 26: ...e Ethernet Quick Start cable 1 Unpack the amplifier and connect the RF Input and RF Output 2 Ensure the J1 RF Output port is properly terminated 3 Connect the AC input power to connector J7 4 When shi...

Страница 27: ...When shipped from the factory the Mini Compact Outdoor SSPA is set to start up muted 5 Connect the supplied Quick Start Control Cable from Port J4 of the SSPA to one of the COM ports on your computer...

Страница 28: ...e or if using an Ethernet Connection the unit s IP Address 4 Specify the unit s Address in the Amplifier Address box If you don t know the address of the unit you may search for it Be aware that this...

Страница 29: ...mplifier s model number and serial number The SSPA module s firmware version number is also displayed here for convenience The unit s network address and serial COM or IP address are also listed which...

Страница 30: ...inue to operate up to 90 C Beyond 90 C the DC power will be interrupted to the SSPA module This measure will protect the sensitive microwave transistors from catastrophic failure The fans and monitor...

Страница 31: ...istors These indicators provide direct access to the active device operating characteristics 3 3 1 4 Gain Adjustment The Gain Attenuation Control is located above the Fault Condition Indicators and to...

Страница 32: ...t between stand alone single unit or redundancy mode of operation 2 Hierarchical Address Identifies each amplifier in a redundant system as HPA 1 or HPA 2 3 Redundant Startup State Selects whether the...

Страница 33: ...sh to change the Amplifier Network Address Communication with the amplifier may be affected 11 Fault Thresholds Allows the user to set the limit for triggering the unit s Current Fault or High Tempera...

Страница 34: ...orked Mini Compact Outdoor SSPA with custom IP settings the internal IP settings need to be modified Click on the IP Setup Tab See Figure 3 12 The SSPA will use the default settings until the unit is...

Страница 35: ...at startup Logs Enable and adjust the interval that the software writes to the log The log location is determined during unit setup Each entry catalogs the RF Power Level and Temperature of the unit S...

Страница 36: ...le the user may open a web browser page select File Open and enter the IP address of the networked amplifier into the browser s address field The default IP address is 192 168 0 9 See Figure 3 15 Impo...

Страница 37: ...Faults Communications Settings General Settings and Fault Settings Status and Faults Window A view of critical SSPA operational parameters See Figure 3 18 for descriptions of some of the functions ava...

Страница 38: ...he prevailing values of the following parameters Selected Protocol Selected Baud Rate Current Web Password Current SNMP Read Write Communities IP Address Gateway Address Subnet Mask Local Port IP Lock...

Страница 39: ...ork Address Note The Compact Outdoor SSPA initially starts up in the Muted state Change the Mute Setting in the General Settings tab to enable Transmit RF Figure 3 20 General Settings window descripti...

Страница 40: ...k the Confirm button with the mouse pointer See Figure 3 21 Figure 3 21 Fault Settings window descriptions Select Ignore Fault on High Fault on Low 10 Window or 15 Window Select Minor Fault or Major F...

Страница 41: ...us performance The converter also supports FSK communications for remote M C capability The FSK is a 650 KHz signal that is multiplexed onto the L Band input of the unit See Section 4 4 for more detai...

Страница 42: ...ications for the respective models DeMux Local Oscillator Phase Locked SSPA Module 55 75 dB Gain Block Up Converter Module L Band Input Optional Internal Reference FSK Optional FSK Monitor Control Ref...

Страница 43: ...hnology allows the system operator to change external system reference frequency without any system configuration required The converter will automatically sense and lock to any one of the following s...

Страница 44: ...This allows the Mini Compact Outdoor SSPB to be fully and remotely monitored and controlled through the system s IFL An embedded controller enables remote communication and fault detection via the IF...

Страница 45: ...al data to make sure that the insulation is sufficient for the particular installation including the cable s temperature range Also make sure the coaxial connector from the IFL cable to the Compact Ou...

Страница 46: ...46 208143 REV Operations Manual HPA3 Mini Compact Outdoor SSPA THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 47: ...s must meet rigid specifications and undergo the following tests Copies of the final test data are shipped along with the unit and or system Figures 5 1 through 5 3 show examples of the final test dat...

Страница 48: ...5 1 Item 2 5 1 3 Input Return Loss The input return loss is measured in all production amplifiers This is a measure of how closely the amplifier is matched to its characteristic impedance The input i...

Страница 49: ...ed in some back off condition This is the operating point at which the composite output power is backed off from the amplifier s P1dB compression point A curve of back off vs IMD level is especially u...

Страница 50: ...screte frequencies across the band to characterize the output power over the operating frequency range The P1dB measurement is a guaranteed minimum specification As the input power increases the outpu...

Страница 51: ...lowest locking level at 10 MHz See Figure 5 3 Item 5 5 2 2 FSK Verifies FSK communication with the BUC See Figure 5 3 Item 6 5 2 3 Phase Noise Tests phase noise using external and internal if equippe...

Страница 52: ...5 3 2 Group Delay The testing software measures the linear parabolic and ripple components to verify the unit is within specification 5 3 3 AM PM The testing software measures the slope of the amplifi...

Страница 53: ...fan tray can be removed for easy cleaning Failure to keep the fans and heatsink clear of debris will void your warranty 6 2 Fan Removal and Heatsink Cleaning It is recommended to remove prime AC powe...

Страница 54: ...ere the unit is equipped with an externally referenced BUC provide the specified reference signal to the SSPA IF input 6 3 3 SSPA unit powers up LED lamp glows green but no RF output signal is present...

Страница 55: ...o use communication ground pin d from the J4 connector as the RS232 ground The SSPA RS232 port is electrically isolated from chassis ground c In the case of IPNet use 10Base T approved cables CAT5 CAT...

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Страница 57: ...system are shown in Figures 7 1 through 7 3 Figure 7 1 shows a standard 1 1 system in which the RF input is transmitted through a transfer switch along with the output Using this configuration the st...

Страница 58: ...st be a wide band design capable of passing the 10 MHz or 50 MHz reference signal along with the 950 MHz to 1525 MHz traffic input The reference frequency power level must be at least 10 dBm into each...

Страница 59: ...on previous generation units are no longer supported The Ethernet interface provides access to the SSPA unit over SNMP V1 protocol or a combi nation of HTTP web page access and Normal serial protocol...

Страница 60: ...interface is isolated from the SSPA chassis ground Serial interface has a separate interface ground pin Pin d on the J4 connector Connecting this pin to common ground will effectively disable the prot...

Страница 61: ...Address packets as shown in Figure 8 3 8 1 1 1 Frame Sync Word The Frame Sync word is a two byte field that marks the beginning of a packet This value is always 0xAA55 This field provides a means of d...

Страница 62: ...ge This byte serves as a request tracking feature 8 1 2 3 Command The SSPA protocol is a table based protocol It allows the user to view and modify data tables located on the controlled device Through...

Страница 63: ...or on attempts to issue a Set request to a read only table tag Various tables may contain values formatted either in 1 or 2 bytes format See Table 8 3 Command Name Command Byte Value Set Request 0 Get...

Страница 64: ...ssed starting from the address specified in the Data Address byte In general the Data Length value plus the Data Address must not exceed the maximum data size particular tag 8 1 2 7 Data Field The act...

Страница 65: ...Checksums are generated by summing the value of each byte in the packet while ignor ing any carry bits A simple algorithm is given as Chksum 0 FOR byte_index 0 TO byte_index packet_len 1 Chksum chksu...

Страница 66: ...a Actual Data 11 N 1 Checksum Dest Address Source Address Protocol Version Request ID Command Data Tag Data Address Data Length Data Table 8 5 Request Frame Structure Byte position Byte Value Hex Desc...

Страница 67: ...mit Disabled 1 12 1 Auxiliary Fault Status Disabled 255 Fault High 0 Fault Low 1 13 1 Auxiliary Fault Handling Minor Fault no effect on Summary Fault 255 Major Fault Triggers Summary Fault 0 Major Fau...

Страница 68: ...3 Default Subnet Mask 255 255 255 0 40 1 Subnet Mask Byte 4 Default Subnet Mask 255 255 255 0 41 1 Receive IP Port Byte 1 MSB Default Receive IP Port 1007 42 1 Receive IP Port Byte 2 Default Receive I...

Страница 69: ...witch Control 2 state Bit 6 Reserved Always 0 Bit 7 Unit On Line State 4 2 Present Attenuation Level 1bit per 0 1 dB attenuation Low Byte 0 to 150 High Byte always 0 5 2 Present RF Power Level Output...

Страница 70: ...xpensive support equipment network cable network hubs Ability to control equipment over Internet Ease of use Implementation of the raw Ethernet interface is not practical due to the limitations it pla...

Страница 71: ...d This protocol proves to be extremely flexible and efficient It is also media independent and can be easily wrapped into another protocol data frame An ex ample of the UDP frame with encapsulated Par...

Страница 72: ...request statistic will be displayed Microsoft Windows XP Version 5 1 2600 C Copyright 1985 2001 Microsoft Corp C Ping 192 168 0 9 Pinging 192 168 0 9 with 32 bytes of data Reply from 192 168 0 9 bytes...

Страница 73: ...sts The definition of managed objects is described in the MIB The MIB file is available for download from the Downloads section of the company web site www paradisedata com The Paradise Datacom MIB is...

Страница 74: ...gIndex rwn Integer32 settingIndex 1 rwn Integer32 settingValue 2 r n OctetString settingTextValue 3 thresholds 2 thresholdsEntry 1 thresholdIndex rwn Integer32 thresholdIndex 1 r n Integer32 threshold...

Страница 75: ...ation Branches for Devices A B and C are reserved for future use paradiseDevice Field contents tables hold specific device information Settings Thresholds and Conditions All table formats follow a com...

Страница 76: ...ault 0 Fault Mute 1 MinorFault 255 1 3 6 1 4 1 20712 2 1 1 1 2 13 SSPA Auxiliary Fault Handling 14 INTEGER BUCFaultCheck Enable 0 Disable 255 1 3 6 1 4 1 20712 2 1 1 1 2 14 Block Up Converter Fault St...

Страница 77: ...1 1 2 37 Device Subnet Mask byte1 MSB 38 INTEGER IPSubnetByte2 0 255 1 3 6 1 4 1 20712 2 1 1 1 2 38 Device Subnet Mask byte2 39 INTEGER IPSubnetByte3 0 255 1 3 6 1 4 1 20712 2 1 1 1 2 39 Device Subnet...

Страница 78: ...perature 3 INTEGER FaultStateAgregateValue 0 65535 1 3 6 1 4 1 20712 2 1 3 1 2 3 Aggregate Fault State of SSPA 4 INTEGER SSPAAgregateAttenuation dBx10 0 200 1 3 6 1 4 1 20712 2 1 3 1 2 4 Current SSPA...

Страница 79: ...ters active reset the Mini Compact Outdoor SSPA by removing its AC power Unplug the Quick Start cable from the M C connector If the unit is restarted with the Quick Start cable connected it will alway...

Страница 80: ...ect the unit IP address and community strings in the relevant text boxes on the Parameters tab Figure 8 9 Item 1 and click Start Figure 8 9 Item 2 4 Select the MIBBrowser tab Figure 8 9 Item 3 5 Click...

Страница 81: ...Datacom Mini Compact Outdoor Solid State Power Amplifiers Drawing 208142 Specification Sheet HPA3 CO Mini Drawing 208838 Specification Sheet HPA3 CO Mini GaN See the Paradise Datacom web site at http...

Страница 82: ...82 208143 REV Operations Manual HPA3 Mini Compact Outdoor SSPA...

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