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Radyne SFC4200 Installation And Operation Manual

Synthesized frequency downconverter
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SFC4200/SFC1275G
Synthesized Frequency
Downconverter

Installation and Operation Manual

TM054 - Rev. 4.0
March, 2002
- NOTICE -
©2002, Radyne 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 officer
of Radyne ComStream Corporation.
Radyne ComStream Corporation • • 3138 E. Elwood St. • • Phoenix, AZ 85034 • • (602) 437-9620 • • Fax: (602) 437-4811

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  • Page 1: Installation And Operation Manual

    Radyne ComStream Corporation. Radyne ComStream Corporation • • 3138 E. Elwood St. • • Phoenix, AZ 85034 • • (602) 437-9620 • • Fax: (602) 437-4811...
  • Page 3 Non-Volatile Section of the Remote Communications Specification, and status of the features, if any, are added at the end of the Volatile Section. If a remote M&C queries two pieces of Radyne ComStream Corporation equipment with different revision software, they could respond with two different sized packets.
  • Page 4 Warranty Policy DM240 Synthesized Frequency Downconverter...
  • Page 5 Radyne ComStream Corporation. All obligations of Radyne ComStream Corporation under this warranty shall cease in the event its products or parts thereof have been subjected to accident, abuse, alteration, misuse or neglect, or which have not been operated and maintained in accordance with proper operating instructions.
  • Page 6 Radyne ComStream Corporation’s liability for damages shall not exceed the payment, if any, received by Radyne ComStream Corporation for the unit or product or service furnished or to be furnished, as the case may be, which is the subject of claim or dispute.
  • Page 7 No responsibility for any errors or omissions that may pertain to the material herein is assumed. Radyne ComStream Corporation makes no commitment to update nor to keep current the information contained in this document.
  • Page 8 SFC4200/SFC1275G Synthesized Frequency Downconverter This Page is Intentionally Left Blank TM054 - Rev. 4.0...

  • Page 9: Table Of Contents

    Section 3 - Operation 3.0 Theory of Operation_______________________________________________3-1 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 Downconverter (SFC4200) ______3-2 3.1.3 AS/4007 Converter First Mixer Ku-Band Downconverter (SFC1275G)_______3-3 3.1.4 AS/4012 Converter Second Mixer Ku-Band Downconverter (SFC1275G) ____3-3 3.2 AS/3048 M&C Controller Assembly ___________________________________3-4...
  • Page 10 Table of Contents SFC4200/SFC1275G Synthesized Frequency Downconverter Section 4 – User Interfaces 4.0 User Interfaces __________________________________________________4-1 4.1 Front Panel User Interface__________________________________________4-1 4.1.1 Front Panel LED Indicators________________________________________4-1 4.1.2 Front Panel LCD Display _________________________________________4-2 4.1.3 Front Panel Keypad _____________________________________________4-4 4.1.3.1 Soft Reset ___________________________________________________4-4 4.1.4 Monitoring Ports ________________________________________________4-4...
  • Page 11 SFC4200/SFC1275G Synthesized Frequency Downconverter Table of Contents 4.5.7 Clear Faults Command (All) ______________________________________4-22 4.5.8 Auto Mode Command (P1:1, B1:1, B1:8) ____________________________4-22 4.5.9 Manual Mode Command (P1:1, B1:1)_______________________________4-23 4.5.10 Manual Backup Command (B1:8)_________________________________4-23 4.5.11 Set Stored Gain For a Specified Channel (S, P1:1, P1:8) ______________4-23 4.5.12 Set Stored Frequency For a Specified Channel (S, P1:1, P1:8)__________4-23...
  • Page 12 Table of Contents SFC4200/SFC1275G Synthesized Frequency Downconverter Section 6 - Maintenance 6.0 Periodic Maintenance _____________________________________________6-1 6.1 Failure Analysis __________________________________________________6-1 Section 7 - Technical Specifications 7.0 Introduction _____________________________________________________7-1 7.1 Input Characteristics ______________________________________________7-1 7.2 Output Characteristics _____________________________________________7-1 7.3 Transfer Characteristics____________________________________________7-1 7.4 Frequency Synthesizer ____________________________________________7-2 7.5 Single Side Band Phase Noise ______________________________________7-2...

  • Page 13: Section 1 - Introduction

    RF to L-Band. The LO that tunes from 4.6645 – 5.2425 GHz or 4.485 – 5.335 GHz (SFC4200), or from 8.88 – 10.68 GHz (SFC1275G) performs this conversion. The second mixer converts the L-Band Signal to either the 70 or 140 MHz IF Output.

  • Page 14: Protection Switch Versatility

    Downconverters are loaded with features that will provide ease of integration and operation. 1.1 Protection Switch Versatility Radyne ComStream Corporation SFC family of Converter Products feature ‘plug-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: Section 2 - Installation

    SFC4200/SFC1275G Synthesized Frequency Downconverter Installation Section 2 - Installation 2.0 Installation Requirements SFC Downconverters are designed to be installed within any standard 19 inch equipment cabinet or rack, and requires 1 Rack Unit (RU) mounting space (1.75 inches) vertically and 19 inches of depth.

  • Page 16: Sfc Downconverter Interconnections

    Installation SFC4200/SFC1275G Synthesized Frequency Downconverter 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 Typical Interconnection with SFC Downconverters TM054 - Rev. 4.0...

  • Page 17: Section 3 - Operation

    3.1 Signal RF Assembly The Signal RF Assembly is a subassembly that holds the first and second mixer converter modules, and the IF Cavity Filter. The first and second mixer modules for the SFC4200 and SFC1275G Downconverters are described below.

  • Page 18: As/4010 Converter First Mixer C-Band Downconverter (Sfc4200)

    The First Mixer module of the C-Band Downconverter accepts the input and has 30 dB of digital gain control. Performance specifications for the First Mixer are listed on Table 3-1. Table 3-1. AS/4010 Converter First Mixer C-Band Downconverter (SFC4200) Standard Band...

  • Page 19: As/4007 Converter First Mixer Ku-Band Downconverter (Sfc1275G)

    SFC4200/SFC1275G Synthesized Frequency Downconverter Operation 1.1125 GHz @ +13 dB 1.225 GHz @ +13 dB 3.1.3 AS/4007 Converter First Mixer Ku-Band Downconverter (SFC1275G) The First Mixer module of the Ku-Band Downconverter accepts the 10.95 – 12.75 GHz Downlink and converts it to L-Band IF. Performance specifications for the First Mixer are listed on Table 3-3.

  • Page 20: As/3048 M&C Controller Assembly

    Operation SFC4200/SFC1275G Synthesized Frequency Downconverter 0 dB Attenuation) 2.0 GHz @ +13 dB 3.2 AS/3048 M&C Controller Assembly The Controller PWB Assembly is the controller, which monitors the Operator Front Panel, and Remote Input used to control the frequency, gain and provide the fault detection functions of the converter.

  • Page 21: Synthesizer Module (Sfc4200)

    Operation 3.3.1 Synthesizer Module (SFC4200) The 10 MHz reference to the synthesizer is provided by the AS/3072 Reference Assembly. Performance of the synthesizer is listed in Table 3-5. Table 3-5. Synthesizer Module (SFC4200) Standard Extended RF LO Output Frequency 4592.5 - 5242.5 MHz 4.48 –...
  • Page 22 SFC4200/SFC1275G Synthesized Frequency Downconverter 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 SFC4200. Figure 3-2. Phase Noise Plots TM054 - Rev. 4.0...

  • Page 23: As/3072 Frequency Reference Assembly

    SFC4200/SFC1275G Synthesized Frequency Downconverter Operation 3.4 AS/3072 Frequency Reference Assembly The Frequency Reference Assembly provides high-stability, low-noise reference signals to the synthesizer in the converter system. The assembly also provides a reference output signal and a means of synchronizing the internal synthesizer to an external 10 MHz source.

  • Page 24: Frequency Accuracy

    Total Power: 28 Watts * 85% Conversion Efficiency = 33 Watts Primary Consumption 3.6 Frequency Accuracy The 10 MHz reference in the SFC4200 was factory set for an accuracy of 1x10 E . The aging specification of the reference is 5x10 E per day.

  • Page 25: Section 4 - User Interfaces

    SFC4200/SFC1275G Synthesized Frequency Downconverter User Interfaces Section 4 – User Interfaces 4.0 User Interfaces The Front Panel may be used to monitor and control the SFC Downconverters. 4.1 Front Panel User Interface The Front Panel of the SFC Downconverters allows for complete M&C (including but not limited to operation, calibration, and testing) of all parameters and functions via a Keypad, LCD Display and Status LEDs.

  • Page 26: Front Panel Lcd Display

    User Interfaces SFC4200/SFC1275G Synthesized Frequency Downconverter Table 4-2. Front Panel LED Indicators Color Function POWER Green Indicates the presence of primary power and that the On/Off Switch located on the rear of the chassis is in the On Position. EXT REF...
  • Page 27 SFC4200/SFC1275G Synthesized Frequency Downconverter User Interfaces CHANNEL: The Channel Field indicates which of 30 User- Programmable (frequency and gain) Channels is currently active. GAIN: The Gain Field indicates the gain of the Converter. By placing the cursor in the Gain Field, the gain can be changed.

  • Page 28: Front Panel Keypad

    User Interfaces SFC4200/SFC1275G Synthesized Frequency Downconverter Note: Because the backup converter ‘Learns’ the Frequency, Channel, Gain and Input Attenuation from the Prime Converter, changes to these fields are not allowed for the Backup Converter. 4.1.3 Front Panel Keypad The pushbutton keypad consists of (↑ ↑ ), (↓ ↓ ), (→ → ), (← ← ) keys, a Menu, and an Enter Key. Use of these buttons is listed on Table 4-3.
  • Page 29 SFC4200/SFC1275G Synthesized Frequency Downconverter User Interfaces Utility Menu: Allows the operator to access the various utility submenus described below: Learn Menu (Backup Converter Only): Allows the operator to tell the Backup Converter to ‘Learn’ about the Primary Converter. Learn Status Menu (Backup Converter Only):Informs the operator of the status of the learning process;...
  • Page 30 User Interfaces SFC4200/SFC1275G Synthesized Frequency Downconverter Figure 4-2. Prime and Single SFC Downconverter Front Panel Menu Flowchart. SFC Downconverter Menu Flow Charts (Prime and Single, Backup 1:1, and Backup 1:8) TM054 - Rev. 4.0...
  • Page 31 SFC4200/SFC1275G Synthesized Frequency Downconverter User Interfaces Figure 4-3. Backup 1:1 SFC Downconverter Front Panel Menu Flowchart TM054 - Rev. 4.0...

  • Page 32: Root Menu

    User Interfaces SFC4200/SFC1275G Synthesized Frequency Downconverter 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 this menu include Receive Frequency, Status, Gain Receive Signal (refer to Figure 4-5).

  • Page 33: Status

    SFC4200/SFC1275G Synthesized Frequency Downconverter User Interfaces Figure 4-5. Root Menu The operation of these four fields is as follows: 4.2.1.1 Status The Status field in the Root Menu provides an indication of the status of the selected channel. The Status fields indicate the converter’s configuration (Single, Primary, Backup) if the converter is Online;...

  • Page 34: Set/Change Status

    User Interfaces SFC4200/SFC1275G Synthesized Frequency Downconverter 4.2.1.2 Set/Change Status Status manipulation is performed via the cursor position and the <ENTER> Key. To modify the operating status of the converter, first determine if the cursor is blinking. If the cursor is not blinking, press <ENTER>...

  • Page 35: Gain

    SFC4200/SFC1275G Synthesized Frequency Downconverter User Interfaces The cursor will move to the Status Field. Place the unit back in service by selecting the Single Indicator in the Status Field and then depressing <ENTER>. An asterisk (*) will be displayed to the right of the Channel Field to indicate a Channel Store Operation has taken place.

  • Page 36: Converter Faults Menu

    User Interfaces SFC4200/SFC1275G Synthesized Frequency Downconverter These include the following: Prime Not Learned: The Backup has not learned about the Prime(s). Prime Polling Error: Either the Prime did not respond to the Backup’s periodic polling, or something in the Prime’s configuration has changed since the last time the backup was told to ‘Learn.’...

  • Page 37: Utility Access Menus

    SFC4200/SFC1275G Synthesized Frequency Downconverter User Interfaces 4.2.5 Utility Access Menus Depress <Menu> from the Fault Menu to access the Utility Access Menu. To gain access to the various utility menus of the converter, depress <ENTER>. The Utility Access Menu will appear as shown in Figure 4-9.

  • Page 38: Switch Configuration Menu

    User Interfaces SFC4200/SFC1275G Synthesized Frequency Downconverter 4.2.6 Switch Configuration Menu This Menu (refer to Figure 4-12) is applicable for a 1:8 Backup Converter. It allows the operator to specify the priority of the various converters. The priority is as follows: 1 (Highest Priority) through 8 (Lowest Priority), and 0 (No Priority, the Backup will ignore the Prime).

  • Page 39: Configuration Menu

    SFC4200/SFC1275G Synthesized Frequency Downconverter User Interfaces The window shown in Figure 4-15 indicates that the Backup Converter was successfully able to ‘Learn’ about the Primary Converter. Figure 4-15. Automatic Learning Successfully Completed Window The following window (Figure 4-16) indicates that the Backup Converter was not able to learn about the Prime Converter.

  • Page 40: Reference Menu

    User Interfaces SFC4200/SFC1275G Synthesized Frequency Downconverter The Config Field (Configuration) indicates the status of the converter and is defined as follows: SNGL: Indicates that the converter is a standalone unit. 1:1: Indicates that the converter is in a one-for-one backup configuration.

  • Page 41: Reference Offset

    SFC4200/SFC1275G Synthesized Frequency Downconverter User Interfaces 4.2.10.1 Reference Offset The Reference Offset Field of the Reference Menu allows the operator to adjust the frequency of the 10 MHz High Stability Internal Reference and vary the output of the Synthesized RF LO by ±...

  • Page 42: Output Attenuator Calibration Menu

    For this reason, converters shipped from Radyne ComStream Corporation are typically powered- up until the final day before shipment. In addition, the accuracy and aging rate are verified immediately prior to shipment.

  • Page 43: Serial Protocol

    SFC4200/SFC1275G Synthesized Frequency Downconverter User Interfaces Place the cursor in the DAC Value Field and use the (↑ ↑ ) DAC Value: and (↓ ↓ ) Keys to increment or decrement the DAC Value. Simultaneously, the display will indicate the DAC Voltage.

  • Page 44: Control Commands

    750 kHz 875 kHz Valid frequency ranges are 3400.000 though 4200.000 kHz (SFC4200), and 10950.000 MHz through 12750 MHz (SFC1275G). Frequencies outside this range, or frequencies that are of an invalid form will be responded to by the ‘illegal frequency’ prompt. If the synthesizer is unable to tune to the desired in-band frequency, the converter will indicate a LO Fault Condition status indication and will change to an off-line or out-of-service indication.

  • Page 45: Set Channel Command (S, P1:1, P1:8)

    SFC4200/SFC1275G Synthesized Frequency Downconverter User Interfaces 4.5.3 Set Channel Command (S, P1:1, P1:8) The Set Channel Command allows the remote operator to change the Channel and thus the Gain and Frequency of the converter to one of the 30 preprogrammed channels. To change channels, use the following format: @01/SETCHANcc<cr>...

  • Page 46: Clear Faults Command (All)

    User Interfaces SFC4200/SFC1275G Synthesized Frequency Downconverter A Primary Converter in a 1:8 Switch configuration will issue the following string of information: Switch Configuration: {Auto, Manually Selected, Manually De-selected} Primary Converter Number: {01, 02, 03, 04, 05, 06, 07, 08} Status:...

  • Page 47: Manual Mode Command (P1:1, B1:1)

    SFC4200/SFC1275G Synthesized Frequency Downconverter User Interfaces Note: For a 1:1 Switch configuration, if the front panel switch is accidentally left in Manual Mode, then the following action should be performed: from the Remote Port, send a manual command to the converter that is ‘Manually Deselected,’ i.e.; the one that is NOT selected.

  • Page 48: Restart (All)

    User Interfaces SFC4200/SFC1275G Synthesized Frequency Downconverter 4.5.14 Restart (All) This command allows the user to reset/restart the converter. @01/RESTART<cr> 4.5.15 Data (All) This command will cause the converter to display the applicable data formats for the various commands. @01/DATA 4.5.16 Learn (B1:1, B1:8) In a 1:1 Switch configuration, this command will cause the backup converter to ‘Learn’...

  • Page 49: Sfc Downconverter Operator Quick Reference Guide

    SFC4200/SFC1275G Synthesized Frequency Downconverter User Interfaces 4.6 SFC Downconverter Operator Quick Reference Guide Table 4-4 lists all of the SFC Downconverter Commands. Note: In all cases the commands are preceded by a valid address “@01/”. Table 4-4. SFC Downconverter Operator Quick Reference Guide @01/HELP Displays all available user commands.

  • Page 51: Section 5 - Electrical Interfaces

    5.2 RF In (J1) The RF In (J1) is the Primary RF Input of the SFC Downconverters. 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 for standard units and 100 –...

  • Page 52: Equipment Rs-485 (J6)

    Electrical Interfaces SFC4200/SFC1275G Synthesized Frequency Downconverter the individual online converters or the backup unit. This interface finds use in both the 1:1 and 1:N configuration type switches. The pinouts of the switch is listed in Table 5-1. Table 5-1. J5 – Backup Switch Interface – D Sub 15-Pin Connector Controller Pin No.

  • Page 53: Test/Fault (J7)

    SFC4200/SFC1275G Synthesized Frequency Downconverter Electrical Interfaces Table 5-2. J6 – Equipment RS-485 Interface Description 10 Pin AS/3048 (J14) SRCLK Connected Tx Not SR DAT Connected Rx Not 5.8 Test/Fault (J7) The Test Port/High-Speed Switch Interface (J7) provides a port where all analog voltages used in determining fault status by the microprocessor are made directly available to the rear panel of the converter.

  • Page 54: Operation Serial I/O (J8)

    Electrical Interfaces SFC4200/SFC1275G Synthesized Frequency Downconverter 5.9 Operation Serial I/O (J8) The Operation Serial I/O Port (J8) is a D Sub 9-Pin Female Connector. This port provides a serial interface that can be configured as either an RS-232, RS-422 or RS-485 interface and allows the user to remotely control all of the features outlined in the Serial Protocol.
  • Page 55 SFC4200/SFC1275G Synthesized Frequency Downconverter Electrical Interfaces Figure 5-2 shows the AS/3048 Controller. Figure 5-3 shows the locations on the controller of the various jumpers required to configure the hardware for RS-232, RS-422, Full-Duplex RS-485 and Half-Duplex RS-485 (Figures 5-3 through 5-6). To make these changes, remove the top cover and locate the AS/3048 Controller.
  • Page 56 Electrical Interfaces SFC4200/SFC1275G Synthesized Frequency Downconverter Figure 5-3. RS-232 Operator Serial I/O Configuration Figure 5-4. RS-422 Operator Serial I/O Configuration TM054 - Rev. 4.0...

  • Page 57: Coarse Vcxo Adjustment

    SFC4200/SFC1275G Synthesized Frequency Downconverter Electrical Interfaces Figure 5-5. Full-Duplex RS-485 Serial I/O Configuration Figure 5-6. Half-Duplex RS-485 Serial I/O Configuration To prevent data collisions from all the converters responding at once, each converter must be software configured for ‘echo off’ in the Configuration Menu. If the converters are being linked to a dumb terminal, the echo should be turned on locally.

  • Page 58: Monitor Ports

    Electrical Interfaces SFC4200/SFC1275G Synthesized Frequency Downconverter 5.11 Monitor Ports The SFC Downconverters have Monitor Ports located on the Front Panel (Figure 5-7) that allow the operator to monitor the IF Input, RF Input and Synthesized LO. Figure 5-7. SFC Downconverter Front Panel with Monitor Ports 5.11.1 RF Monitor Port...
  • Page 59 SFC4200/SFC1275G Synthesized Frequency Downconverter Electrical Interfaces Figure 5-9. Phase Noise Plot TM054 - Rev. 4.0...
  • Page 60 Electrical Interfaces SFC4200/SFC1275G Synthesized Frequency Downconverter This Page is Intentionally Left Blank 5-10 TM054 - Rev. 4.0...

  • Page 61: Section 6 - Maintenance

    Section 6 - Maintenance 6.0 Periodic Maintenance Radyne ComStream Corporation SFC Downconverters are designed to provide many thousands of hours of continuous operation. 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 frequency conversion amplitude accuracy over time.
  • Page 62 Maintenance SFC4200/SFC1275G Synthesized Frequency Downconverter This Page is Intentionally Left Blank TM054 - Rev. 4.0...

  • Page 63: Section 7 - Technical Specifications

    SFC4200/SFC1275G Synthesized Frequency Downconverter Technical Specifications Section 7 - Technical Specifications 7.0 Introduction This section defines the technical performance parameters and specifications for the SFC Synthesized Frequency Downconverters 7.1 Input Characteristics SFC4200 Frequency: 3.625 – 4.20 GHz Standard 3.40 – 4.20 GHz Extended Band (Optional) SFC1275G Frequency: 10.95 –...

  • Page 64: Frequency Synthesizer

    Technical Specifications SFC4200/SFC1275G Synthesized Frequency Downconverter SFC1275G Third Order Intercept: +30 dBm -48 dBc IMD two tones with 0 dBm combined output power AM/PM Conversion: 0.1°/dB Image Rejection: > 80 dB Group delay: Linear: 0.025 nsec/MHz Parabolic: 0.005 Nsec/MHz 1 nsec p-p for ± 18 MHz Ripple: 7.4 Frequency Synthesizer...

  • Page 65: Operator Interface

    SFC4200/SFC1275G Synthesized Frequency Downconverter Technical Specifications 7.8 Operator Interface Remote M&C Interface: Operator Serial Port Configurable to RS-232, RS-422, or RS-485 Remote Features: Frequency, Gain, and Channel Control Status Reports Signal Strength Monitoring Fault Isolation Reference Offset Control Front Panel LCD Menu Driven Display provides indication &...
  • Page 66 Technical Specifications SFC4200/SFC1275G Synthesized Frequency Downconverter This Page is Intentionally Left Blank TM054 – Rev. 4.0...
  • Page 67 SFC4200/SFC1275G Synthesized Frequency Downconverter Appendices This Page is Intentionally Left Blank TM054 - Rev. 4.0...
  • Page 68 Appendices SFC4200/SFC1275G Synthesized Frequency Downconverter This Page is Intentionally Left Blank TM054 – Rev. 4.0...

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