Miteq DNB-2B Operation And Maintenance Manual Download Page 12

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TABLE 2

Offset (Hz)

100

10K

100K 300K

1M Offset (Hz)

Typical Phase

Noise (dBc/Hz)

-50

-70

-87

-92

-95

-115 Maximum

Phase Noise (dBc/Hz)
(1.0 Hz Bandwidth)

Straight line curve defined
by the points in the table.

TABLE 1

PHASE NOISE CHARACTERISTICS (1.0 Hz BANDWIDTH)

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

100

1,000

10,000

100,000

FREQUENCY OFFSET FROM CARRIER (Hz)

PHASE NOISE (dBc/Hz)

INTELSAT

IESS-308/309

Typical MITEQ

Performance

Summary of Contents for DNB-2B

Page 1: ...788 2034 Tel 631 436 7400 Fax 631 436 7431 www miteq com OPERATION AND MAINTENANCE MANUAL MULTIBAND BLOCK DOWNCONVERTERS The model number supplied is ______ DNB 2B ______ DNB 3B ______ DNB 3B 1 The MITEQ reference number is Revision B 5 04 ...

Page 2: ...B ADDED SECTION 3 7 AND SUBSECTIONS 3 7 1 3 7 2 3 7 3 3 7 4 APPENDICES AND GLOSSARY ETHERNET INTERFACE INSTALLATION AND OPERATION UPDATED SECTION 3 2 1 TO INCLUDE ETHERNET INFORMATION REVISED TABLE OF CONTENTS TO INCLUDE AFFORMENTION CHANGES ...

Page 3: ...umbers 8 1 2 EQUIPMENT CHARACTERISTICS 9 1 2 1 PHYSICAL 9 Connector Wiring Information 9 1 2 2 FUNCTIONAL 10 SECTION 2 INSTALLATION 2 1 UNPACKING STORAGE RESHIPMENT 13 2 2 MOUNTING 13 2 3 TURN ON PROCEDURE 13 SECTION 3 OPERATION 3 1 CONTROLS 15 3 1 1 EXTERNAL CONTROLS 15 AC Power 15 Fuse 15 3 1 2 INTERNAL CONTROLS 15 Power Supply Output Voltage Adjustment 15 ...

Page 4: ...S 28 3 6 2 ERROR CODES SERIAL PROTOCOL ONLY 28 3 6 3 SYSTEM FAULT STATUS ALR 29 3 6 4 UNIT ATTENUATION ATT 29 3 6 5 FREQUENCY BAND INFORMATION BND 30 3 6 6 INTERNAL CALENDAR CLOCK CLK 30 3 6 7 UNIT COMBINATION COMMAND COM 31 3 6 8 EXTERNAL ALARM CONFIGURATION EAC 31 3 6 9 LO FREQUENCY FRQ 32 3 6 10 ALARM LOG LOG 32 3 6 11 UNIT MEMORY REGISTER STORE RECALL MEM 33 3 6 12 UNIT MUTE COMMAND MUT 34 3 6...

Page 5: ...PRINCIPLES OF OPERATION 4 1 INTRODUCTION 47 4 2 FUNCTIONAL DESCRIPTION 47 4 2 1 DOWNCONVERTER FUNCTIONAL DESCRIPTION 47 4 2 2 BLOCK DIAGRAMS 48 4 2 3 FREQUENCY PLANS 48 4 3 MAJOR SUBASSEMBLIES FUNCTIONAL DESCRIPTION 49 4 3 1 DOWNCONVERTER RF MODULE A2A1 49 4 3 2 OUTPUT MODULE A2A3 49 4 3 3 CRYSTAL OSCILLATOR A3A1 50 4 3 4 LOCAL OSCILLATOR A3A2 50 4 3 5 POWER SUPPLY A1A1 51 4 3 6 CONTROL BOARD FIRM...

Page 6: ... CORRECTIVE MAINTENANCE 52 5 3 CHANGING THE REMOTE INTERFACE FROM RS485 422 TO RS232 OR FROM RS232 TO RS485 422 53 5 3 1 INSTALLING A NEW CONTROL BOARD FIRMWARE KIT A4A1 54 LIST OF DIAGRAMS Figure 1 1 Front Panel Frequency Converter 7 Figure 1 2 Real Panel Frequency Converter 7 Figure 3 1 Internal Power Supply Adjustment 15 Figure 4 1 Downconverter Functional Block Diagram 48 ...

Page 7: ...7 SECTION 1 INTRODUCTION 1 1 GENERAL DESCRIPTION 1 1 1 PHYSICAL Figure 1 1 Front Panel Frequency Converter Figure 1 2 Rear Panel Frequency Converter RF IF REMOTE J6 ALARM J3 0 I ...

Page 8: ...on and 64 memory locations for each converter where various setups can be stored and recalled easily Also a log is continuously updated with time stamped records of activity for each converter The equipment can operate stand alone or can be arranged in a redundancy configuration without the need for a dedicated switch control unit 1 1 3 MODEL NUMBERS Converter Model Numbers Multi band Block Downco...

Page 9: ...ctor RS485 RS422 RS232 DE 9S IEEE 488 IEEE 488 receptacle Primary power input connector IEC320 Connector Wiring Information Alarm Connector J3 Function Pins Normal Fault Summary Alarm 4 5 Open Closed Summary Alarm 5 6 Closed Open Redundancy Alarm 1 2 Open Closed Redundancy Alarm 2 3 Closed Open External Alarm Input 7 8 User defined Remote Interface Connector J6 RS485 and RS422 RS232 Pin Designatio...

Page 10: ...ove Table Impedance 50 Ohms Return loss 18 dB minimum Signal monitor N A Power output at 1 dB compression point 10 dBm minimum Transfer characteristics Gain 30 dB minimum Noise Figure 15 dB Image rejection 80 dB minimum Level stability 0 25 dB day at constant temperature Amplitude response 0 5 dB 80 MHz 1 0 dB over any band Group delay 1 ns over any band typical Intermodulation distortion third or...

Page 11: ... table for phase noise table designation LO Monitors 5 dBm to 15 dBm Primary power 90 250VAC Power Consumption 50 Watts nominal Fuse T1 25A Environmental Operating Ambient temperature 0 to 50 C Relative humidity Up to 95 at 30 C Atmospheric pressure Up to 10 000 feet Environmental Non operating Ambient temperature 50 to 70 C Relative humidity Up to 95 at 40 C Atmospheric pressure Up to 40 000 feet...

Page 12: ...imum Phase Noise dBc Hz 1 0 Hz Bandwidth Straight line curve defined by the points in the table TABLE 1 PHASE NOISE CHARACTERISTICS 1 0 Hz BANDWIDTH 120 110 100 90 80 70 60 50 40 30 20 10 100 1 000 10 000 100 000 FREQUENCY OFFSET FROM CARRIER Hz PHASE NOISE dBc Hz INTELSAT IESS 308 309 Typical MITEQ Performance ...

Page 13: ... marked to indicate that it contains fragile electronic equipment 2 2 MOUNTING THIS EQUIPMENT IS NOT FOR USE IN A DOMESTIC ENVIRONMENT THIS EQUIPMENT IS INTENDED FOR RACK MOUNTING OPERATOR INJURY MAY OCCUR IF UNIT IS NOT PROPERLY MOUNTED THIS EQUIPMENT MUST BE SECURELY MOUNTED Slides are provided for mounting in a standard 19 equipment rack 2 3 TURN ON PROCEDURE After mounting make all external co...

Page 14: ...andards for the correct connection to the power source Alarm Connector J3 This connector is a form c contact closure indicating the summary alarm status of the equipment See Paragraph 1 2 1 for wiring information Remote Connector J6 The Remote Interface connector is an optional connection This allows the operator to monitor and control the equipment from a remote location See Paragraph 1 2 1 for w...

Page 15: ... output Figure 3 1 Internal Power Supply Adjustment 3 2 FRONT PANEL OPERATIONS A Liquid Crystal Display LCD and Light Emitting Diode LED indicators have been organized such that important information is available at a glance The keyboard is divided into functional groups to allow an operator to easily change any parameter from the front panel See Figure 1 1 for the physical layout of the front pan...

Page 16: ... actions will show the menus in the following order Main Alarm Remote Auxiliary Utility Time Date and contrast control Unit Title Cursor Key The CURSOR key cycles through each of the data fields in a given menu This accommodates the simple activation of a field within a menu for data entry Data Entry Keys The Data Entry keys allow the operator to enter specific data into an active field Data is en...

Page 17: ...ctory and is displayed for informational purposes only This parameter is not user selectable O Output Frequency Band The Output Frequency Band that the unit operates at is set at the factory and is displayed for informational purposes only This parameter is not user selectable ATT Attenuation To change the attenuation setting of the unit Press the CURSOR key to select the attenuation field on the ...

Page 18: ...the MEM field See note below Press ENT again to set the unit to the displayed settings If ENT is not pressed after ten seconds or MENU is pressed the MEM field will become selected again and the display will be updated to reflect the actual settings Note If ENT is not pressed after 10 seconds the display will timeout and the actual setting stored in the memory register will be displayed If after 3...

Page 19: ...ld on the display Use the arrow keys to scroll through all of the active alarms Press the MENU key to return to the Alarm Menu Test alarm The test alarm will cause the status contacts to indicate a fault condition simulating a genuine alarm To toggle the state of the Test Alarm Press the CURSOR key to highlight the Test Alarm field on the display If the Test Alarm is inactive the field will read S...

Page 20: ...covery 15 3V power supply fault recovery 5 3V A power supply fault recovery 5 3V B power supply fault recovery LO fault recovery Frequency change Attenuation change Unit Mute Unmute by an operator Test Alarm fault recovery Unit Title change External fault recovery Clear Event Log To clear the Event Log of its contents Press the CURSOR key to highlight the Clear Log field on the display Press the E...

Page 21: ...In standard units the user can select one of two serial buses RS485 or RS422 On units equipped with optional remote interfaces the remote bus is fixed To select the remote bus Press the CURSOR key to select the bus field on the display Use the up and down arrow keys to scroll through the available options until the desired setting is displayed Press ENT to set the serial bus RTS CTS RTS CTS Handsh...

Page 22: ...R key to select the Service Request field on the display Use the up or down arrow key to toggle the setting to ENABLED or DISABLED Press ENT to set the service request feature IP Address Units equipped with a Ethernet interface can occupy a IP address from 000 000 000 000 to 255 255 255 255 To select the remote address Press the CURSOR key to select the address field on the display Use the numeric...

Page 23: ...justment employs a 12 bit digital to analog converter and can be adjusted from 0 to 4095 Use the numeric data entry keys to enter the desired setting or the up and down arrow keys to increase or decrease the Reference Frequency Press ENT to set the displayed Reference Frequency setting REF Frequency Reference Source In the absence of an external frequency reference the unit automatically switches ...

Page 24: ...adjustment range is reached 3 2 7 UNIT TITLE MENU If not already displayed use the MENU key to access the Unit Title Menu This menu displays the model number of the unit the revision of the firmware the redundancy switch type and allows the operator to assign a title to the unit This menu is temporarily displayed during power up of the equipment Unit title Unit Title length may be up to twenty cha...

Page 25: ...sponse message The unit continually monitors the communication bus and will accept commands addressed to it even in Local mode When in Local mode receipt of any SET commands commands beginning with will be ignored and the unit will respond with an error code The response time from command to acknowledge is 100 ms maximum Since all bytes are ASCII printable characters a compatible terminal may be u...

Page 26: ...All values are in decimal Checksum MOD character value 32 95 32 Below is a program written in the C programming language that illustrates the checksum calculation char check_sum char char char check_sum array mes_len return the checksum character for the message in array subtract 32 from each character before taking modulo 95 sum add 32 to the final sum mes_len message length char array 32 mes_len...

Page 27: ...I or Commands preceded by are QUERY commands and those preceded by are SET commands QUERY commands are used to examine system parameters while SET commands are intended to modify system parameters SET commands do not affect the unit s response when it is addressed to talk by the IEEE 488 controller QUERY commands determine the unit s response when it is addressed to talk by the IEEE 488 controller...

Page 28: ...Firmware Title and Revision SET Memory Recall Store and Set STA System Status USR User Title VLT System Voltages Note The Mutliband Block Converters units are fully backward compatible with the command set for both the 9400 and 9600 series MITEQ frequency converters and translators Please refer to MITEQ technical notes 25T027 and 25T039 for clarification of these protocols However these protocols ...

Page 29: ...y Alarm e Reserved for future use f Reserved for future use g External Alarm h Reserved for future use i Reserved for future use 3 6 4 UNIT ATTENUATION ATT The SET command requires a three digit parameter representing the attenuation in dB The three character string INC or DEC can be used in place of the attenuation parameter to increment or decrement the attenuator by 0 2 dB Remote Command Sequen...

Page 30: ... ffff ffff Input Frequency Range O Output Frequency indicator ffff ffff Output Frequency Range 3 6 6 INTERNAL CALENDAR CLOCK CLK The SET command requires a twenty character parameter that sets the date and time of the internal calendar clock Remote Command Sequence CLKYyyyyMmmDddHhhNnnSss Unit Response CLK The QUERY command requires no parameters Remote Command Sequence CLK Unit Response CLKYyyyyM...

Page 31: ...rs indicating the LO frequency in Hz B Band indicator b single digit ASCII numeric character representing Band number T Attenuation indicator ttt Three digit ASCII numeric characters indicating the attenuation in tenths of a dB I IF indicator i 0 No IF selection available 3 6 8 EXTERNAL ALARM CONFIGURATION EAC The SET command requires one parameter Remote Command Sequence EACn Unit Response EAC Th...

Page 32: ...ires a two digit parameter indicating the log entry to be examined If entry 00 is queried the unit returns the number of log entries currently in the log otherwise the unit responds with the date time and a code indicating the event which has occurred Remote Command Sequence LOGnn Unit Response LOGnnCyyyymmddhhnnssEeee nn Two digit ASCII numeric characters MSD transmitted first LSD last Indicating...

Page 33: ...a selected memory register All five parameters are required This command does not affect unit operation Remote Command Sequence MEMnnFffffffffffffTtttIiUuuuuuuuuuuuu Unit Response MEM The QUERY command requires one parameter indicating the memory register to recall and returns the contents of that register This command does not affect unit operation Remote Command Sequence MEMnn Unit Response MEMn...

Page 34: ...cters are in the range of 20H to 7AH Remote Command Sequence NAMnnnnnnnnnnnnnnnnnnnn Unit Response NAM The QUERY command requires no parameters Remote Command Sequence NAM Unit Response NAMnnnnnnnnnnnnnnnnnnnn Nnnnnnnnnnnnnnnnnnnn Twenty character unit name 3 6 14 REFERENCE FREQUENCY ADJUSTMENT REF The SET command requires a four digit parameter indicating the digital to analog converter setting o...

Page 35: ...in the command Remote Command Sequence SETnnFffffffffffffTtttIiUuuuuuuuuuuuu Unit Response SET The QUERY command requires one parameters indicating the memory register to recall and returns the contents of that register The unit is set to the parameters included in the reply Remote Command Sequence SETnn Unit Response SETnnFffffffffffffTtttIiUuuuuuuuuuuuu nn Two digit ASCII numeric characters indi...

Page 36: ...uation in tenths of a dB L Local Remote mode indicator l 0 or 1 ASCII numeric character 0 Local control 1 Remote control I IF indicator i 0 No IF selection available M Mute status indicator m 0 or 1 ASCII numeric character 0 not mute 1 mute R Frequency Reference Source indicator r 0 or 1 ASCII numeric character 0 internal 1 external P Polarization indicator p 0 No Polarization selection available ...

Page 37: ...sponse VLTpsvv vv p a through d indicating the particular voltage to be reported s or indicating sign vv vv Four digit ASCII numeric characters indicating the measured voltage in Volts a 15 3 Volt Supply Rail b 5 3 A Volt Supply Rail c 5 3 B Volt Supply Rail d 15 3 Volt Supply Rail 3 6 20 EXAMPLES The following are typical commands and responses showing the ASCII printable characters The address i...

Page 38: ...controller Bit No 7 6 5 4 3 2 1 0 0 1 0 0 0 S2 S1 S0 The S n bits indicate in binary code which component fault line caused the service request a 1 b 2 c 4 etc In the case of multiple faults the lowest fault value will be reported The IEEE 488 controller may perform a serial poll without a service request being generated by the unit a request may have been generated by another device on the bus In...

Page 39: ...verter is fully installed and functioning in accordance with the Converter Operation and Maintenance O M Manual Once operating the Ethernet Interface may be configured Configuring Internet Protocol IP operating parameters An Internet Protocol IP address and associated parameters must be configured in the unit so the controlling device can address it Normally the individual or organization managing...

Page 40: ...ed via the Web Interface The web page designs have been optimized for the use with the Microsoft Internet Explorer MSIE Version 5 0 web browser or higher Use of Cookies must be enabled see the TOOLS INTERNET OPTIONS PRIVACY setting Web access may function properly or with somewhat degraded performance using other browsers of the same vintage Browsers of earlier vintage are not recommended To conne...

Page 41: ...e Converter Save Memory Save the specified settings at the specified memory number without changing the Converter settings Save and Set Save the specified settings at the specified number and load its values to the Converter Communications Page IP Address View or set the system IP address changing this value will reset the system IP Subnet Mask View or set the system IP Subnet Mask changing this v...

Page 42: ...MP SNMP is designed for control of network elements from a central management point The SNMP Management Information Base MIB file for the system available from MITEQ defines the specifics of the interface This file is read by the chosen SNMP management tool to provide an understanding of the interface The MIB file is in a format that can be ready with any text editor Do NOT modify this file SNMP o...

Page 43: ...MSIE enter the command ftp assigned IP address The user will be prompted for a user ID and password The user ID is always MITEQ and the password will be the assigned system password No files will be visible in the FTP server directory Upload the file provided if using MSIE by dragging and dropping into the IE window and wait for the upload to complete The file will NOT be visible in the FTP file n...

Page 44: ...r to be used to determine the proper procedure The computer must be configured with the same Subnet Mask but a different IP address to connect properly For connecting with the converter as shipped from the factory the following settings are recommended IP Address 192 168 1 2 Subnet Mask 255 255 255 0 Gateway 0 0 0 0 Both standard and reversing cables are widely available The following chart is pro...

Page 45: ...ost s file are Windows XP C WINDOWS SYSTEM32 DRIVERS ETC Windows 2K C WINNT SYSTEM32 DRIVERS ETC Win 98 ME C WINDOWS The hosts file is a plain text file of the form ip address associated name Add the desired address name pair s to the list Generally it is a good idea to back up any system file before modification An example host file is provided here 216 239 39 99 google com 127 0 0 1 localhost 19...

Page 46: ...not always Ethernet for connecting multiple computing devices together for high speed communications IP Internet Protocol Specifies an organization of data packets sent between computers for network communications MSIE Microsoft Internet Explorer the web browser integrated with most versions of Microsoft Windows The Converter interface design was optimized for operation with MSIE 5 0 or higher RJ4...

Page 47: ...nal reference oscillator is always 10 MHz If a 5 MHz external reference signal is applied the internal reference source will frequency double the incoming signal to achieve the 10 MHz output signal The RF local oscillator is a synthesized frequency agile phase locked source 4 2 1 DOWNCONVERTER FUNCTIONAL DESCRIPTION The input signal is fed to an isolator and input filter which rejects out of band ...

Page 48: ...TCH MODULE INTERFACE CONNECTOR IEEE 488 CONNECTION 90 250VAC 47 63 Hz AC INPUT POWER SUPPLY FUSE T1 25A POWER ON OFF SWITCH J6 REMOTE INTERFACE A1A1 DC OUTPUT RS232 CONNECTION SYSTEM INTERFACE TO A3A2 REMOTE INTERFACE BOARD A4A5 OPTION 17F ONLY LOCAL INTERFACE LOCAL INTERFACE TO A2A1 J2 J1 LCD DISPLAY J4A J1 J11 J7 J10 J6 RF INPUT MONITOR 5 MHz OR 10 MHz INTERNAL REFERENCE FREQUENCY ADJUST EXTERNA...

Page 49: ...tput 1 dB Compression 8 dBm nominal Image Rejection 80 dB minimum LO Leakage at the Input 80 dBm maximum Input Signal Monitor 20 dBc nominal DC Voltage 15 volts Noise Figure 9 dB nominal LO Input Power Level 10 dBm nominal 4 3 2 OUTPUT MODULE A2A3 Model Number Part Number DNB 3B 148868 1 DNB 3B 1 148868 1 DNB 2B 148868 2 Gain 42 dB nominal Noise Figure 6 dB nominal Input Return Loss 10 dB nominal ...

Page 50: ... Option Part Number Temperature Stability 0 C to 50 C Aging day After 24 hours on time 10 Hz dBc Hz 100 Hz dBc Hz 1 kHz dBc Hz Standard 136284 1 2 x 10 8 5 x 10 9 120 150 165 10B 136284 2 5 x 10 9 1 x 10 9 135 155 165 10C 136284 3 2 x 10 9 1 x 10 9 135 155 165 Input characteristics Frequency 5 MHz or 10 MHz Impedance 50 ohms Level 4 3 dBm Output characteristics Frequency 10 MHz Impedance 50 ohms L...

Page 51: ...to 265 VAC 45 Hz to 66 Hz Input connector type IEC 320 socket Fuse value 1 25A Fuse type Time lag Fuse size 5 x 20 mm DC Output Voltage Tolerances 15V 15 3 0 25V 5V 5 3 0 2V 15V 15 3V 0 25V DC Output Pins Pins 1 3 15 3V Return Pins 2 4 15 3V Pins 5 7 9 5 3V B Return Pins 6 8 10 5 3V B Pin 11 5 3V A Return Pin 12 5 3V A Pins 13 15 17 19 21 23 15 3V Return Pins 14 16 18 20 22 24 15 3V Fan Output Pin...

Page 52: ...ator 5 1 1 DC VOLTAGE A set of power supply test points is available on the power supply If voltage is beyond tolerance see Section 5 3 7 reset power supply refer to Figure 4 1 using the tuning adjustment on the power supply 5 1 2 GAIN OF THE CONVERTER The gain of the converter should be periodically monitored to reveal deviations which would indicate possible malfunction 5 1 3 FREQUENCY MEASUREME...

Page 53: ...e Attenuation Max 30 0 dB for all units Attenuation Step Size 0 2 dB for all units Remote Bus The remote interface configuration for the unit Model The Model number of the unit Model Type Multi band Block Downconverter Model Code This is field is for future use Mute Option Enable for upconverters disable for downconverters IF Option Changes the displayed IF frequency of the unit not the operation ...

Page 54: ...soon appear Use arrow keys to select model number or ENT key for manual entry NOTE If the display is blank or unreadable the LCD contrast may need to be adjusted Follow the LCD contrast adjustment procedure Use the arrow keys to select Downconverter models Press ENT Use the arrow keys to select Block Downconverters Press ENT Use the arrow keys to select the proper model numbers The High and Low LO...

Page 55: ...at may occupy remaining digits Select the Model Type using the arrow keys Upconverter or downconverter and press ENT Model Code This field is for future use and should be set to 0 press ENT Select the Mute Option using the arrow keys ENABLE for upconverters DISABLE for downconverters and press ENT Select the IF Option using the arrow keys 70 MHz or 140 MHz and press ENT INT EXT Reference Option Us...

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