Miteq NSU Technical Note Download Page 8

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Figure 1-9. NSU1-B50/B50, NSU1-B75/B75 or NSU1-S50/S50 RF Connections

Figure 1-10. NSU2-B50 or NSU2-B75 RF Connections to Converter

J1A

IF MON

J1
IF

J1A

IF MON

J1
IF

J1A

IF MON

J1
IF

OUT

J2A

RF MON

REF

ADJUST

5/10 MHZ

+4 +/-3dBm

EXT REF

INPUT

EXT REF

INPUT

REF

ADJUST

J2A

RF MON

OUT

5/10 MHZ

+4 +/-3dBm

EXT REF

INPUT

REF

ADJUST

J2A

RF MON

OUT

5/10 MHZ

+4 +/-3dBm

BACKUP

CONVERTER

NSU2-B75

NSU2-B50

PRIMARY

CONVERTER 01

PRIMARY

CONVERTER 02

BACKUP IF

PRIMARY 02

PRIMARY 01

NOTE: FOR 9800/9900 SERIES CONVERTERS EQUIPPED WITH ETHERNET OPTION

17H CONNECT J7 INSTEAD OF J6 OF THE CONVERTER TO THE NSU.

PRIMARY 01

Rx/Tx

BACKUP

Rx/Tx

SW1

SW2

PRIMARY 02

Rx/Tx

J1A

IF MON

J1
IF

J1A

IF MON

J1
IF

OUT

J2A

RF MON

REF

ADJUST

5/10 MHZ

+4 +/-3dBm

EXT REF

INPUT

EXT REF

INPUT

REF

ADJUST

J2A

RF MON

OUT

5/10 MHZ

+4 +/-3dBm

BACKUP

CONVERTER

NSU1-B50/B50

NSU1-B75/B75

NSU1-S50/S50

PRIMARY

CONVERTER 01

BACKUP IF

BACKUP

Rx/Tx

PRIMARY 01

Rx/Tx

PRIMARY 01

NOTE: FOR 9800/9900 SERIES CONVERTERS EQUIPPED WITH ETHERNET OPTION

17H CONNECT J7 INSTEAD OF J6 OF THE CONVERTER TO THE NSU.

SW1

SW4

Summary of Contents for NSU

Page 1: ...T065 DECEMBER 2006 REV E NSU REDUNDANT SWITCHOVER SYSTEM ____________________________________ SECTION 1 INTRODUCTION 1 1 GENERAL DESCRIPTION 1 1 1 PHYSICAL Figure 1 1 Front Panel Control Unit Figure 1...

Page 2: ...ced into standby and the backup converter is placed on line in place of the defective converter using the Switch Modules The frequency converters can be prioritized so that critical communication chan...

Page 3: ...1 3 NSU MODEL NUMBERS The NSU1 is a 1 1 configuration with the switch modules integrated into a 1 rack high chassis with the control unit The NSU2 is a 1 2 configuration with the switch modules integ...

Page 4: ...No IF 2 RF 50 ohm RSM S50 S50 2 IF 50 ohm No RF RSM B50 B50 2 IF 75 ohm No RF RSM B75 B75 NOTE IF BNC female Switches are 50 180MHz RF Switches SMA female are DC 18 1 GHz Option 17C RS232 Remote Inte...

Page 5: ...t sense both Normally Open and Normally Closed contacts This provides the means for the Control unit to automatically recognize that a converter has been added to the chain or removed from the chain T...

Page 6: ...minimum requirement for any converter connected to the NSU is a Form C set of contacts which are used to indicate the fault status In addition any converter capable of remote control must have its RS4...

Page 7: ...900 SERIES CONVERTERS EQUIPPED WITH ETHERNET OPTION 17H CONNECT J7 INSTEAD OF J6 OF THE CONVERTER TO THE NSU J3 J1 SW4 J2 J4 PRIMARY 01 IF BACKUP IF BACKUP CONVERTER NSU1 B50 OR NSU1 B75 PRIMARY CONVE...

Page 8: ...IF PRIMARY 01 IF NOTE FOR 9800 9900 SERIES CONVERTERS EQUIPPED WITH ETHERNET OPTION 17H CONNECT J7 INSTEAD OF J6 OF THE CONVERTER TO THE NSU PRIMARY 01 Rx Tx BACKUP Rx Tx SW1 J1 J2 J4 J3 J1 J3 J4 J2...

Page 9: ...Bm J5 EXT REF INPUT J5 EXT REF INPUT REF ADJUST J2A RF MON J2 RF OUT 5 10 MHZ 4 3dBm J5 EXT REF INPUT REF ADJUST J2A RF MON J2 RF OUT 5 10 MHZ 4 3dBm J1A IF MON J1 IF J1A IF MON J1 IF J1A IF MON J1 IF...

Page 10: ...cy Chain The Redundancy Chain includes up to twelve primary positions and one backup position Each primary position includes one frequency converter and one Switch Module The backup position includes...

Page 11: ...r a faulty Primary Unit The Backup Unit normally occupies the Standby Path If a Primary Unit fails the Control Unit will switch the Backup Unit online into the Primary Path and the faulty Primary Conv...

Page 12: ...the Switch Module Bus The Switch Module depicted below has both an RF and an IF four port transfer switch The push wheel is set from zero to twelve to indicate redundancy chain position of the Switch...

Page 13: ...erter Serial Link is disabled for a Primary Converter a fault in that Primary converter will cause the transfer switches to switch and the Backup converter would be updated with the converter settings...

Page 14: ...online while backing up a faulty unit of higher priority lowest numeric setting Placing the Control Unit into Automatic redundancy mode has the following consequences All Primary Units are switched on...

Page 15: ...with Y N N Begin Check converter status via converter bus Any Primary Unit fault priority than unit in standby Backup Unit highest priority to standby Switch Backup Unit into Standby position and t Ba...

Page 16: ...HIS 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 Sl...

Page 17: ...r source Refer to national wiring standards for the correct connection to the power source Converter Monitor and Control Connectors J1 to J13 This connector accepts form c contacts from Backup and Pri...

Page 18: ...he Event Log as well If the system configuration does not require a serial connection between the NSU and a converter the NSU Converter Serial Link should be disabled for that position It is important...

Page 19: ...ry converter into Standby and the Backup converter Online in its place Apply an input signal to the Backup converter and from the Converter Settings Subscreen for that chain position adjust the Gain E...

Page 20: ...20 Press the AUTO indicator button it should light green to indicate Auto mode and the Primary converters should be Online and the Backup should be in Standby The system is now armed and operational...

Page 21: ...lable 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 panel The...

Page 22: ...ent log A full set of numeric Data Entry keys accompanied by up down left and right arrows simplifies operator entries The ENTER key is provided to submit data entries A C clear key is available to ca...

Page 23: ...appears on the display Press the left or right arrow to change the cursor to a right arrow character If not already selected select the desired data field by pressing the left or right arrow keys unt...

Page 24: ...e to communicate with the switch module in that redundancy chain position or the switch module is indicating a fault Blinking question marks in the lower row indicates that the NSU recognizes the cont...

Page 25: ...ode The AUTO indicator button will not be lit when in Manual redundancy mode Transfer Switch Position Online Standby Unoccupied To toggle the transfer switch position associated with a chain position...

Page 26: ...nel or by using remote commands The control unit will not automatically change a chain position to the unoccupied state To eliminate a redundancy chain position place the NSU in the manual redundancy...

Page 27: ...only RF RF Frequency To re tune the RF Frequency of the selected converter Press the left or right arrow key to select the RF Frequency field on the display Use the numeric data entry keys to enter th...

Page 28: ...use the up and down arrow keys to increment or decrement the displayed slope If the numeric data entry keys were used press ENTER to set the displayed slope NOTE Once an entry has been initiated using...

Page 29: ...t the displayed Polarization When the polarization of the converter in Standby is changed the Polarization Switch is set to the new polarization NSU Converter Serial Link Subscreen The NSU Converter s...

Page 30: ...l light red when there is an active fault The STATUS indicator button will light amber if there are no active faults and fault activity has been stored in the event log Active Faults The number of act...

Page 31: ...highest numbered first Press the C key to return to the Status Screen The events that can be reported are Event Log Cleared Unit Startup Converter Contact fault recovery Converter Bus fault recovery S...

Page 32: ...ey to return to the Status Screen 3 2 7 SERIAL PORT REMOTE OPERATION SCREEN If not already displayed use the Up and down arrow keys to access the Serial port remote operation screen The serial port re...

Page 33: ...on the display Use the numeric data entry keys to enter the desired address or the up and down arrow keys to increment or decrement the displayed address respectively Press ENTER to save the address R...

Page 34: ...fter any change This screen gives the operator the option to defer the reset until all Ethernet parameters have been updated Select YES and Press ENTER to re start the NSU Select NO and press ENTER to...

Page 35: ...s to enter each octet of the Subnet Mask and the decimal point to advance to the next octet If no changes are required for a particular octet simply press the decimal point to advance to the next octe...

Page 36: ...the date and time as well as adjust the contrast of the LCD LCD Contrast In order to adjust the LCD contrast Press the right arrow key to locate the cursor in the contrast field Use the up or down ar...

Page 37: ...of the fields are correct Press ENTER at any time to set the date and time to those displayed 3 2 10 SYSTEM INFORMATION SCREEN If not already displayed use the Up and down arrow keys to access the Sys...

Page 38: ...grammable from the front panel The response time from command to acknowledge is 100 ms maximum All messages addressed to the equipment are acknowledged with a response message The unit continually mon...

Page 39: ...ed to the final sum to obtain the checksum value 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...

Page 40: ...The SET command requires twenty six parameters The set form of this command is used to enable or disable the NSU Converter Serial Link for each position in the redundancy chain A chain position can b...

Page 41: ...ator of the operational condition of each NSU Converter Serial Link and the status of the converter contacts in the redundancy chain Remote Command Sequence ACS Response ACSsssssssssssssCccccccccccccc...

Page 42: ...hich no changes are being made otherwise an error will be generated and the command will not be accepted This also applies to chain positions that have not yet been enabled Query Cmd ACS Reply ACS0200...

Page 43: ...ate an error response b illegal parameter or parameter out of range and the action will not be implemented The following is an example of querying Active Converter Status for an NSU1 with a Backup and...

Page 44: ...d to specify the attenuation of the Primary converter in a given chain position If the Primary converter s serial link is enabled and the unit attenuation is sent to the NSU control unit the attenuati...

Page 45: ...parameters Remote Command Sequence CLK Response CLKYyyyyMmmDddHhhNnnSss Y Year indicator yyyy Year 4 digit ASCII numeric characters MSD transmitted first LSD last M Month indicator mm Month 2 digit A...

Page 46: ...ator ssssssssssss Twelve digit ASCII numeric characters no change to stored value in position 4 2 8 GAIN EQUALIZATION EQU The SET command requires two parameters one which is two digits in length repr...

Page 47: ...n Unit Response FRQnnFffffffffffff FRQ Frequency indicator nn Two digit ASCII numeric characters Indicating converter 00 through 12 F Frequency parameter indicator ffffffffffff Twelve digit ASCII nume...

Page 48: ...e event which has occurred Remote Command Sequence LOGgg Response LOGggCyyyymmddhhnnssEeee gg Two digit ASCII numeric characters MSD transmitted first LSD last Indicating the log entry queried C Calen...

Page 49: ...lt 45 Primary Converter 7 Fault Recovery 46 Primary Converter 8 Fault 47 Primary Converter 8 Fault Recovery 48 Primary Converter 9 Fault 49 Primary Converter 9 Fault Recovery 50 Primary Converter 10 F...

Page 50: ...Recovery 92 Primary Converter 5 Both Contacts Closed Fault 93 Primary Converter 5 Both Contacts Closed Fault Recovery 94 Primary Converter 6 Both Contacts Closed Fault 95 Primary Converter 6 Both Con...

Page 51: ...h 2 Serial Link Fault 139 Switch 2 Serial Link Fault Recovery 140 Switch 3 Serial Link Fault 141 Switch 3 Serial Link Fault Recovery 142 Switch 4 Serial Link Fault 143 Switch 4 Serial Link Fault Recov...

Page 52: ...Transfer Switch Standby 194 Primary Converter 4 Transfer Switch Online 195 Primary Converter 4 Transfer Switch Standby 196 Primary Converter 5 Transfer Switch Online 197 Primary Converter 5 Transfer S...

Page 53: ...EL NUMBER MOD There is no SET command The QUERY command requires no parameters Remote Command Sequence MOD Response MODmm mm ASCII string character representing model number 01 NSUN 02 NSU1 B75 S50 03...

Page 54: ...mary Converters It is important to note that when the polarization of the converter in Standby is changed the Polarization Switch is set to the new polarization This could happen when either the Backu...

Page 55: ...and Sequence RED Response REDr RED Redundancy mode indicator r 0 through 1 ASCII numeric character 0 Manual 1 Automatic 4 2 18 SERIAL NUMBER SER The QUERY command requires no parameters Remote Command...

Page 56: ...mote control R Redundancy mode indicator r 0 through 1 ASCII numeric character 0 Manual 1 Automatic S Chain position in standby mode ss Two digit ASCII numeric characters Indicating chain position 00...

Page 57: ...12 transfer switch position in standby mode 00 Polarization Switch position a m transfer switch module position status 0 transfer switch Online Vertical for Polarization switch 1 transfer switch Stand...

Page 58: ...M B50 21 RSM S50 22 RSM S50 S50 23 RSM B50 B50 24 RSM B75 B75 NSU1 R 25 RSP NSU1 R C25179 05 NSU1 S50 4 2 23 FIRMWARE TITLE AND VERSION VER There is no SET command The QUERY command requires one param...

Page 59: ...uence nnConverter_command Response nnConverter_response Where nn 00 through 12 are the converter positions in the Redundancy Chain represented by two digit ASCII numeric characters The converter comma...

Page 60: ...net In addition a capability to remotely upgrade the system firmware is provided The use of standard protocols makes it possible to provide password protected access to the Control Unit from any locat...

Page 61: ...nual or help files available with the computer to be used to determine the proper procedure Three parameters will be required on the NSU IP Address NSU example setting 192 168 1 1 Subnet Mask NSU exam...

Page 62: ...S Ethernet Subnet mask parameter indicator ssssssssssss Twelve digit ASCII numeric characters no change to stored value in position The values may be verified using the corresponding query command EAD...

Page 63: ...rnet 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 performanc...

Page 64: ...ssible Write Community View or set the SNMP System Contact parameter enter a long arbitrary string to make SNMP inaccessible Trap Destination View or set the SNMP Trap destination address Time Page Fu...

Page 65: ...stablished the unit will request the password five ASCII characters which should be sent in the standard MITEQ wrapper address byte ignored password checksum byte The connection will be refused if a u...

Page 66: ...screen will appear When complete a message box that reports if the process completed successfully or not Successful programming takes approximately 10 seconds unsuccessful programming can take as long...

Page 67: ...sts 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 de...

Page 68: ...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 c...

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Miteq NSU, Technical Note, Page: 8 / 68

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