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Radyne SFC1275G, Installation And Operation Manual, Page: 66 / 68

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Technical Specifications

SFC4200/SFC1275G Synthesized Frequency Downconverter

7-4

TM054 – Rev. 4.0

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Summary of Contents for SFC1275G

Page 1: ...ComStream Corporation This manual may not in whole or in part be copied reproduced translated or reduced to any electronic or magnetic storage medium without the written consent of a duly authorized o...

Page 2: ......

Page 3: ...different sized packets The remote M C MUST make use of the non volatile count value to index to the start of the Volatile Section If the remote M C is not aware of the newly added features to the pr...

Page 4: ...Warranty Policy DM240 Synthesized Frequency Downconverter 2...

Page 5: ...and or malfunction relating in any way to shipping storage accident abuse alteration misuse neglect failure to use products under normal operating conditions failure to use products according to any...

Page 6: ...ility or if field repair will be accomplished The Repair Authorization may be requested in writing or by calling Radyne ComStream Corporation 3138 E Elwood St Phoenix Arizona 85034 USA ATTN Customer S...

Page 7: ...Corporation makes no commitment to update nor to keep current the information contained in this document Radyne ComStream Corporation assumes no responsibility for use of any circuitry other than the...

Page 8: ...SFC4200 SFC1275G Synthesized Frequency Downconverter vi TM054 Rev 4 0 This Page is Intentionally Left Blank...

Page 9: ...3 1 Signal RF Assembly ______________________________________________3 1 3 1 1 AS 4010 Converter First Mixer C Band Downconverter SFC4200 _________3 2 3 1 2 AS 4011 Converter Second Mixer C Band Down...

Page 10: ..._4 11 4 2 4 Converter Faults Menu __________________________________________4 12 4 2 5 Utility Access Menus____________________________________________4 13 4 2 6 Switch Configuration Menu_____________...

Page 11: ...verter Operator Quick Reference Guide ___________________4 25 Section 5 Electrical Interfaces 5 0 SFC Downconverter Connections ____________________________________5 1 5 1 Power ______________________...

Page 12: ..._______7 1 7 2 Output Characteristics _____________________________________________7 1 7 3 Transfer Characteristics____________________________________________7 1 7 4 Frequency Synthesizer ___________...

Page 13: ...t Panel Controls or remotely via an RS 232 Serial Interface The units monitor local oscillator LO phase locked loop faults in the converter at all times during operation If a fault is detected the con...

Page 14: ...lug and play ease of installation with the RCU101 1 1 or the RCU108 1 8 Redundancy Control Units All converters can be plugged into the backup slot and assume the role of protection switch controller...

Page 15: ...nstallation and Operation Manual 2 2 Removal and Assembly Carefully unpack the unit and ensure that all of the above items are in the carton If the Prime AC power available at the installation site re...

Page 16: ...cy Downconverter 2 2 TM054 Rev 4 0 2 5 SFC Downconverter Interconnections Figure 2 1 illustrates a typical interconnection of a SFC Downconverter with an RCU101 1 1 Protection Switch Figure 2 1 RCU101...

Page 17: ...tent The SFC Downconverters are double conversion microwave Downconverters The block diagram Figure 3 1 of the system includes the Signal RF Assembly the Synthesizer Assembly the Reference Assembly th...

Page 18: ...nce 50 50 LO Input 4 6625 5 2425 GHz 13 dBm for 70 MHz IF 4 5925 5 1725 GHz 13 dBm for 140 MHz IF 4 555 5 355 GHz 13 dBm for 70 MHz IF 4 485 5 285 GHz 13 dBm for 140 MHz IF 3 1 2 AS 4011 Converter Sec...

Page 19: ...070 GHz 70 MHz 2 100 2 180 GHz 140 MHz Pout Nominal 34 to 35 dBm Output Impedance 50 LO Input 8 88 10 68 GHz 13 dBm for 70 MHz IF 8 81 10 61 GHz 13 dBm for 140 MHz IF 3 1 4 AS 4012 Converter Second Mi...

Page 20: ...an output voltage of 0 3 V 8 50 V respectively The 8 channel A D Converter allows the AS 3048 to monitor various voltages within the converter The input to the A D is 0 to 5 VDC Voltages monitored by...

Page 21: ...88 dBc 10 kHz 95 dBc 100 kHz 110 dBc 1 MHz 70 dBc 100 Hz 80 dBc 1 kHz 88 dBc 10 kHz 95 dBc 100 kHz 110 dBc 1 MHz IF LO Output Frequency 1112 5 MHz 1 225 GHz Spurious 70 dBc 70 dBc Harmonics 20 dBc 20...

Page 22: ...thesized Frequency Downconverter 3 6 TM054 Rev 4 0 As shown in Figure 3 2 the phase noise plots showing synthesized and IF LO SSB Phase Noise are representative of the actual phase noise of the SFC420...

Page 23: ...lied 10 MHz becomes available at the RF Output Port where it can be supplied to the Reference Input of the next converter Int 10 MHz 10 MHz signal for the synthesizer Analog Digital Signal to the refe...

Page 24: ...quency may drift as much as 6x10 E 9 To correct an error in frequency the operator should use the Reference Menu and adjust the Frequency Offset in PPB Scaling of the PPB Offset allows for 999 PPB of...

Page 25: ...described in Table 4 1 Figure 4 1 SFC Downconverters Front Panel Controls and Indicators Table 4 1 Front Panel User Interface Item No Description Function 1 Front Panel LED Indicators Refer to Section...

Page 26: ...t SIG FAULT Yellow Signal Faults are used in switch configuration to indicate switch status when in the Backup Mode 4 1 2 Front Panel LCD Display The front panel display is a 2 line by 24 character LC...

Page 27: ...the converter is the backup converter in a redundancy system either a 1 1 or a 1 8 system Primary Indicates that the converter is the primary converter in a redundancy system either a 1 1 or a 1 8 sys...

Page 28: ...ration to control frequency gain and status will be covered in detail below ENTER The Enter Key will cause changes to Frequency Status and other operator selected parameters to be executed Enter also...

Page 29: ...Unit Configuration Menu Allows operator selection of unit address 1 99 serial port baud rate 1200 2400 4800 and 9600 baud Echo On Off specifies converter configuration Single 1 1 or 1 8 and indicates...

Page 30: ...4200 SFC1275G Synthesized Frequency Downconverter 4 6 TM054 Rev 4 0 Figure 4 2 Prime and Single SFC Downconverter Front Panel Menu Flowchart SFC Downconverter Menu Flow Charts Prime and Single Backup...

Page 31: ...SFC4200 SFC1275G Synthesized Frequency Downconverter User Interfaces TM054 Rev 4 0 4 7 Figure 4 3 Backup 1 1 SFC Downconverter Front Panel Menu Flowchart...

Page 32: ...4 0 Figure 4 4 Backup 1 8 SFC Downconverter Front Panel Menu Flowchart 4 2 1 Root Menu The Root Menu appears after the Model Identification Screen after power up of the converter The four fields of t...

Page 33: ...the Status prompt is as follows Status Channel No SINGLE Indicates that the converter is in a standalone configuration and that when presented with an input signal of the specified frequency will gen...

Page 34: ...ill be stored to memory and the cursor will be placed in the Status Field Use the or Keys to select the online indicator and depress ENTER The new converter settings will be executed the RF will be tu...

Page 35: ...be changed in the Gain field and increment or decrement the number using the or Keys The Gain change will be made at this time To store the new Gain into the non volatile memory for the currently sele...

Page 36: ...Relay did not switch when told to do so Note Any Switch Fault will cause the Signal Fault LED on the Backup to illuminate It will also cause the Error LED on the 1 8 Switch to illuminate 4 2 4 Convert...

Page 37: ...in will scroll to the second Configuration Menu Use MENU to scroll through the Reference Menu Status Menu and Output Attenuator Calibration Menu Calibration Menus represent those alignments settings a...

Page 38: ...r s priority When all of the priorities have been set pressing the ENTER causes the Backup to accept the entries and store them in Non Volatile RAM Pressing MENU will scroll to the next menu 4 2 7 Lea...

Page 39: ...The Backup Converter is not capable of backing up the Prime Converter 4 2 9 Configuration Menu The ID Field allows the operator to establish an ID Number for the Operator Serial Interface Move the cu...

Page 40: ...over a range of 999 PPB This menu also contains a clock that indicates the total number of hours the unit has been in operation since the reference oscillator was first installed The Reference Menu is...

Page 41: ...panel as follows C Band Downconverter 70 MHz IF LO MON Rx Freq 1042 5 MHz C Band Downconverter 140 MHz IF LO MON Rx Freq 972 5 MHz C Band Downconverter Extended 70 MHz IF LO MON Rx Freq 1155 MHz C Ban...

Page 42: ...for more than a week allow several days of operation before verifying the accuracy For this reason converters shipped from Radyne ComStream Corporation are typically powered up until the final day be...

Page 43: ...d by the spectrum analyzer Finally the correct DAC is stored by depressing ENTER The attenuator setting is incremented to the next location or in this case 01 dB The process is repeated until 20 dB is...

Page 44: ...B1 8 Backup Converter 1 8 Switch ALL All Converters 4 5 1 Set Current Channel Frequency Command S P1 1 P1 8 The Set Current Channel Frequency Command alters the stored frequency of the current channel...

Page 45: ...or the remote operator by entering the Help command as follows 01 HELP cr 4 5 6 Status Command Prior to issuing a remote command the remote operator may first wish to determine the current status of t...

Page 46: ...Text Signal Value Stored Faults None or Faulted One For Eight Switch Status Indicates the status of each prime converter Switch is in Manual Mode Auto Mode Prime 1 Prime 2 Prime 3 Prime 3 Prime 4 Prim...

Page 47: ...nd a manual command to the converter that is Manually Deselected i e the one that is NOT selected Then send an Auto Command to the same converter and the switch change back to Auto Mode 4 5 10 Manual...

Page 48: ...have a priority 0 As the Backup converter polls the Prime s the learning status will be output via the serial port 01 LEARN 4 5 17 Show Priority B1 8 This command causes the backup converter to displ...

Page 49: ...1 SETCHAN Sets the current channel 01 SETFREQ Sets the frequency for the current channel 01 STORE Saves all data under the current channel 01 RAMGAIN Sets the gain for another alternate channel 01 SET...

Page 50: ......

Page 51: ...verters It is an N Type Female Connector for the SFC4200 and an SMA Female Connector for the SFC1275G 5 3 IF Out J2 The IF Out Connector J2 is the 75 Ohm BNC F Connector Outputs are within 50 90 MHz f...

Page 52: ...1 Fault Code Bit 1 11 10 FCB2 Fault Code Bit 2 4 14 FCB3 Fault Code Bit 3 12 3 FCB4 Fault Code Bit 4 5 7 IDB1 ID Bit 1 13 11 IDB2 ID Bit 2 6 15 IDB3 ID Bit 3 14 4 IDB4 ID Bit 4 7 8 INT O Interrupt 15...

Page 53: ...d in determining fault status by the microprocessor are made directly available to the rear panel of the converter Synthesizer and signal path faults can be verified with a voltmeter using the followi...

Page 54: ...on on the AS 3048 Controller PWB must have been performed as illustrated in Figures 5 4 through 5 7 A summary of the jumper selections is as follows Configuration JP4 1 JP4 2 JP4 3 JP4 4 JP4 5 JP4 6 J...

Page 55: ...e made by the operator to implement the RS 422 485 or multipoint RS 232 modes of serial operation The theory of operation for multipoint requires that the M C Computer Transmit Port be connected in pa...

Page 56: ...Electrical Interfaces SFC4200 SFC1275G Synthesized Frequency Downconverter 5 6 TM054 Rev 4 0 Figure 5 3 RS 232 Operator Serial I O Configuration Figure 5 4 RS 422 Operator Serial I O Configuration...

Page 57: ...nfigured for echo off in the Configuration Menu If the converters are being linked to a dumb terminal the echo should be turned on locally 5 10 Coarse VCXO Adjustment This adjustment at the rear panel...

Page 58: ...ill be 15 dB nominal below the level present at J2 5 11 3 LO Monitor The LO Monitor allows the operator to monitor the Synthesized or Second Mixer Local Oscillator using the SMA LO Monitor Connector a...

Page 59: ...SFC4200 SFC1275G Synthesized Frequency Downconverter Electrical Interfaces TM054 Rev 4 0 5 9 Figure 5 9 Phase Noise Plot...

Page 60: ...Electrical Interfaces SFC4200 SFC1275G Synthesized Frequency Downconverter 5 10 TM054 Rev 4 0 This Page is Intentionally Left Blank...

Page 61: ...peration Normal aging and drifting of electronic components can cause the accuracy of the converter to change over time As with any converter these changes will affect the frequency accuracy and frequ...

Page 62: ...Maintenance SFC4200 SFC1275G Synthesized Frequency Downconverter 6 2 TM054 Rev 4 0 This Page is Intentionally Left Blank...

Page 63: ...Bm Output 19 dBm Note Performance specifications guaranteed at nominal levels only Connector BNC Type F 7 3 Transfer Characteristics Type Double Conversion No Spectral Inversion Gain 40 dB Maximum 0 d...

Page 64: ...kHz 80 dBc Hz 80 dBc Hz 10 kHz 88 dBc Hz 84 dBc Hz 100 kHz 95 dBc Hz 94 dBc Hz 1 MHz 110 dBc Hz 110 dBc Hz External Reference 5 MHz Optional 7 6 Rx Signal Strength Detection SFC4200 Sensitivity TSS 80...

Page 65: ...tor Serial Port D Sub 9 Pin 10 MHz REF In BNC REF Out BNC Fault Test D Sub 9 Pin Switch Interface D Sub15 Pin Equipment RS 485 Interface D Sub 9 Pin IEC 320 C13 Power Entry Module Module Switch 10 Gro...

Page 66: ...Technical Specifications SFC4200 SFC1275G Synthesized Frequency Downconverter 7 4 TM054 Rev 4 0 This Page is Intentionally Left Blank...

Page 67: ...SFC4200 SFC1275G Synthesized Frequency Downconverter Appendices TM054 Rev 4 0 8 1 This Page is Intentionally Left Blank...

Page 68: ...Appendices SFC4200 SFC1275G Synthesized Frequency Downconverter 8 2 TM054 Rev 4 0 This Page is Intentionally Left Blank...

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