manualshive.com logo in svg

Meteor Communications Corporation MCC-545C, Эксплуатация и обслуживание, Страница: 25 / 88

Поделиться
Скачать
Meteor Communications Corporation MCC-545C Скачать руководство пользователя страница 25

DESCRIPTION  2-20

MCC-545C PACKET DATA RADIO

12/2000

3.1.2

Horizon Angle

The second consideration in site selection is the horizon angle in the direction of the Master
Station. To achieve optimum performance at ranges up to 1600 km (1000 miles) the horizon, or
look angle, must be within 2 or 3 degrees of horizontal and must be free from obstructions,
buildings, bridges, etc.  Trees and shrubbery do not present a problem if they are at least 20 feet
from any element of the antenna. At shorter ranges the horizon angle must be higher.

3.1.3

Power Source

The MCC-545C requires a 12 V

DC

 power source. An automobile battery provides an excellent

power source. Care must be taken to ensure that proper wire size is used to support the MCC-
545C high in-rush current during transmission. Typical transmit current is 25 to 30 amps for a
time period of about .10 second. A #14 wire (or two #16 wires) should be used for both the +12
V

DC

 and ground wires.  The wire length should be shorter than 10 feet.  The MCC-545C does not

have an internal fuse and special care must be taken to protect the unit from a power line
reversal.

3.1.4

Site Dimensions

To obtain the maximum performance from a meteor burst site, the station must be set up on
level, flat ground. The terrain in front of the antenna must be flat and free of buildings and other
structures for a distance of at least 30 times the height of the antenna. Operation in an area that
does not have a proper ground plane to provide ground reflection can reduce meteor burst
performance by a factor of two.

3.1.5

Antenna Considerations

The final consideration in setting up a site is selecting the antenna and the co-ax cable.  The
antenna must provide a 50 ohm load and this impedance must be maintained at both the Tx and
Rx frequency. The information bandwidth of the system is less than 15 KHz.  Therefore, in a
single frequency system, a very narrow bandwidth antenna can be used.

The higher the antenna gain the better the performance will be. Yagi antennas will work better
than dipole antennas (2 to 4 times improvement). Always maintain the same antenna polarization
at the remote station as the Master Station antenna. For example, if a whip antenna is used at the
MCC-545C, the Master Station antenna must also be vertically polarized.

In a Meteor Burst System, the height of the antenna should be optimized as a function of the
distance between the Master Station and the Remote Station.  A plot of antenna height vs. range
is given in Figure 3.1 below.

Содержание MCC-545C

Страница 1: ...FCC ID BIB5450500101 EXHIBIT VIII OPERATION AND MAINTENANCE OF THE MCC 545C PACKET DATA RADIO...

Страница 2: ...ENANCE OF THE MCC 545C PACKET DATA RADIO MAN OM 545C January 2001 Meteor Communications Corporation 8631 So 212th St Kent WA 98031 Tel 253 872 2521 Fax 253 872 7662 E mail mcc meteorcomm com 2000 by M...

Страница 3: ...and treated by a doctor Components containing beryllium may only be machined cut abraded or heated above 400 C under strictly controlled conditions approved by the appropriate Safety Authority Dispos...

Страница 4: ...ton International customers shall pay shipping costs to the MCC facility with Seattle as the point of U S entry MCC shall pay incoming U S duty fees MCC shall pay for shipping costs to return the equi...

Страница 5: ...0500101 EXHIBIT VIII REVISION PAGE Document Title MCC 545C INSTALLATION AND OPERATIONS Manual Document Number Revision Date Revision Redline 11 10 2000 Redline Release 01 03 2001 Initial Release A B C...

Страница 6: ...TALLATION 3 1 3 1 Site Selection 3 1 3 1 1 External Noise Interference 3 1 3 1 2 Horizon Angle 3 3 3 1 3 Power Source 3 3 3 1 4 Site Dimensions 3 3 3 1 5 Antenna Considerations 3 3 3 2 Equipment Insta...

Страница 7: ...15 4 3 5 Receiving Messages 4 16 4 3 6 Examining Revising Messages Queues 4 16 4 3 7 Examining Message Statistics 4 18 4 3 8 Entering Canned Messages 4 18 4 3 9 Printing Canned Messages 4 19 4 4 Data...

Страница 8: ...0X Data Logger APPENDIX F Event Programming LIST OF FIGURES Figure Page 2 1 MCC 545C Photograph 2 2 2 2 MCC 545C Block Diagram 2 5 2 3 MCC 545C Outline Drawing 2 6 3 1 Remote Station Antenna Height fo...

Страница 9: ...DESCRIPTION 2 4 O M of the MCC 545C PACKET DATA RADIO 12 2000...

Страница 10: ...tions The height of the trails 60 miles gives the system its 1 000 mile range 1 1 Presentation This manual is divided into five major sections Section 2 DESCRIPTION Discusses specifications of each mo...

Страница 11: ...mand parameters are presented in lower case e g DEFINE id Optional parameters are enclosed in brackets e g TIME hh mm ss Names of terminal keys are capitalized and enclosed in square brackets when men...

Страница 12: ...DESCRIPTION 2 7 O M of the MCC 545C PACKET DATA RADIO 12 2000...

Страница 13: ...quencies The unit utilizes three phase locked frequency synthesizers to set the Tx and Rx frequencies The operator can set the frequency to any authorized frequency 10KHz steps within a 2 MHz band Aut...

Страница 14: ...Data Loggers such as the Campbell Scientific CR10X or CR23 Data from these loggers can be collected stored and transmitted to a distant unit Refer to Appendix B and E for a description of data logger...

Страница 15: ...y 6 months This battery should be removed if the unit is stored without power for extended periods of time 2 6 Hardware Organization and Layout The unit contains five printed circuit assemblies A 100...

Страница 16: ...nthesizer 1 st and 2 nd local oscillator and transmit oscillator Reference Oscillator 12 8 MHz 2 5 PPM Tx phase lock loop 74 100 MHz output 20 KHz steps A divide by 2 circuit 37 50 MHz output 10 KHz s...

Страница 17: ...2 VCO TCXO PHASE DC CTRL VCO LOCKED REF OSC Ft LO2 114 9 MHZ SP LOOP FREQ DEV 2400 HZ COMPARE CONN RAM 12 8 10 0 MHZ GMSK MODULATION 0 DBM 512K X 16 RX ENABLE PIC CONTROL DATA RATE 9600 BAUD 2 44 PIN...

Страница 18: ...DESCRIPTION 2 13 O M of the MCC 545C PACKET DATA RADIO 12 2000 MCC 545C OUTLINE DRAWING FIGURE 2 3...

Страница 19: ...n aluminum heat sink assembly 2 6 3 MCC 545C Microprocessor The microprocessor is a Motorola based embedded computer housed on a single PCB that contains 512K x 16 of non volatile flash memory for pro...

Страница 20: ...4 VDC Standby 80 ma Continuous Transmit 25 Amps Nominal 100 msec TABLE 2 1 MCC 545C RECEIVER SPECIFICATIONS CHARACTERISTIC SPECIFICATION Frequency 37 50 MHz 0005 Synthesized 10KHz steps Modulation Typ...

Страница 21: ...hutting down transmitter 20 will shut down the transmitter T R Switch Solid State Switching Time 100 microseconds I O MCC Standard Refer to Section 3 2 High VSWR Protection Withstands Infinite VSWR TA...

Страница 22: ...DESCRIPTION 2 17 MCC 545C PACKET DATA RADIO 12 2000...

Страница 23: ...s follows Cosmic Noise Power Line Noise Automobile Ignition Noise Computer Generated Interference External Signal Interference Cosmic Noise Cosmic noise is the limiting noise factor in a meteor burst...

Страница 24: ...power lines to reduce noise Call your local utility in case of severe noise Automobile Ignition Noise Automobile ignition noise is generated by all gasoline engines and is a result of the high voltage...

Страница 25: ...maximum performance from a meteor burst site the station must be set up on level flat ground The terrain in front of the antenna must be flat and free of buildings and other structures for a distance...

Страница 26: ...e to minimize line losses Try to maintain a line loss between the antenna and the MCC 545C to less than 1 db A table of cable loss at 50 MHz for various types of co ax cable is given below for referen...

Страница 27: ...bles and a weatherproof seal at the entry point of the enclosure 3 2 1 Antenna Installation Antenna installation is very dependent on the site conditions and proper antenna placement can make the diff...

Страница 28: ...wer cable with lugs for connecting to a 3 8 battery post Part No 14001261 03 The power connector pins are as follows The voltage drop at pins 1 and 2 should not drop by more than 2VDC during transmiss...

Страница 29: ...inal Use a standard RS 232 cable with a 9 pin male D connector OPERATOR PORT 9S Pin Signal 1 CD tied to pins 4 and 6 2 Tx Data from MCC 545C 3 Rx Data to MCC 545C 4 DTR tied to pins 1 and 6 5 Ground 6...

Страница 30: ...ng to data loggers or other serial input devices DATA PORT 9S Pin Signal 1 Not Used 2 Tx Data from MCC 545C 3 Rx Data to MCC 545C 4 DTR to MCC 545C 5 Ground 6 DSR from MCC 545C 7 RTS to MCC 545C 8 CTS...

Страница 31: ...ard These are for MCC test purposes and are not used at this time These pins will NOT interfere with a normal 3 wire RS 232 connector pins 2 3 and 5 3 2 2 4 4 Data I O Port The Data I O port is used a...

Страница 32: ...ohm resistor 8 Optocoupled input 4 return 9 Ground 10 Relay Output 1 Normally Open 2Amp rating 11 Relay Output 1 Common 12 Relay Output 1 Normally Closed 2Amp rating 13 Relay Output 2 Normally Open 2A...

Страница 33: ...power is applied 12 23 00 16 54 10 POWER SHUTDOWN FAIL OCCURRED 01 02 01 12 54 44 POWER HAS BEEN RESTORED RESUMING OPERATION If this message does not appear then the baud rate may not be set correctly...

Страница 34: ...The MCC 545A is programmed by a factory trained technician to operate on a number of authorized frequency channels Once programmed these frequencies can be selected by the operator from a keyboard Yo...

Страница 35: ...BB Reflected power in watts This should be less than 5 watts CCC Battery voltage under load while transmitting This should be greater than 10 6 VDC DDD Received signal strength in dbm This will normal...

Страница 36: ...DESCRIPTION 2 31 MCC 545C PACKET DATA RADIO 12 2000...

Страница 37: ...will print the system time For a description of printouts see Appendix A Before you begin you should familiarize yourself with the special editing functions that you can use when entering commands DE...

Страница 38: ...Stations keeping all units in a network on the same time reference If the time of day received at a Remote Station differs by more than two minutes from the internal Remote clock the Remote will set...

Страница 39: ...out loss of messages data or configuration even if power is randomly turned on and off Therefore the software is designed to operate continuously to save all operational information when power is off...

Страница 40: ...TION Once the software is rebooted or restart due to a crash or failure of the battery backup RAM all changes will be lost unless they were previously saved in EEPROM Saving and Restoring the Configur...

Страница 41: ...as either a Remote Station or as a Master Station Use the DEVICE command to select the mode you require For normal MCC 545C Remote Station operation enter DEVICE REMOTE For MCC 545C operation as a Ma...

Страница 42: ...lt is 1 precedence information on changes in the connectivity table is given highest precedence automatic feature ETEAP End to end ACK message precedence default is 0 zero precedence the acknowledgmen...

Страница 43: ...type MON d r The two optional parameters are designed to limit the printout The burst monitor generates two or three lines of printout for every burst This could conceivably create hundreds of pages o...

Страница 44: ...hin a 24 hour time period the TIME trigger allows you to schedule a command to be invoked only once at a specified point within a 24 hour time period The command schedule list is restarted each time t...

Страница 45: ...ation There is one programmable time limit for the I O port input on the MCC 545C MCC recommends using the pre programmed default timeout parameter If you choose to change the timeout the time limits...

Страница 46: ...er Station When used in the relay mode the MCC 545C must be defined as a Master Station The relay will then receive MCC 550C sensor data GROUP reports see MCC 550C Operations Manual repackage them and...

Страница 47: ...d translates the receiver calibration curves from detected RF in db to microvolts These are nonlinear and significantly different for the MCC 527 and MCC 543 receivers To apply the scaling factors the...

Страница 48: ...d in this section SECTION OPERATIONS 4 3 1 Entering and Deleting Messages 4 3 2 Editing Messages 4 3 3 Sending Messages 4 3 4 Sending Commands 4 3 5 Sending Canned Messages 4 3 6 Receiving Messages 4...

Страница 49: ...nd at a different priority level type MESSAGE R dest1 dest2 dest n where R is any priority level from A to Z A is the highest and Z is the lowest Dest is the numerical ID of the stations to which the...

Страница 50: ...ter entered CTRL R Prints the current line of text on the next line down CTRL I Performs a fixed tab function Removes the current line from the edit buffer CR Performs a carriage return and line feed...

Страница 51: ...CC 545C will purge the message from the Tx Queue and display the following message hh mm ss MESSAGE TIME TO LIVE EXPIRED MSG NO sss DESTN name You must then reenter the message Continued failure to su...

Страница 52: ...ages in the queue falls below the minimum queue depth To enter an edited canned message enter CANMSG id where id is the neighboring station s ID After composing your message press the ESC key The MCC...

Страница 53: ...3 8 Examining and Revising Message Queues There are two types of queues for transmitting and receiving messages QUEUE NAME DESCRIPTION TXQ Transmit Queue This queue is used for transmitting all messa...

Страница 54: ...sss unlinked and deleted The and deleted text appears only if the message is not present in another queue When all messages have been deleted the terminal prints queue flushed To delete a specific me...

Страница 55: ...YPE CONFIG CANMSG OFF CLOSE PORT SAVE HOURLIES COMPRESSION CONNECT SCALE MEM DEL MSG DATE SCHED MODE DQE RXQ DESTINATION SERIAL MON DQE TXQ DEVICE SET BAUD MONOFF FLUSH MSG DUTY CYCLE SNP NETMON FLUSH...

Страница 56: ...ttings specified by these commands are stored in the EEPROM Changes specified by these commands take effect immediately but are lost when the unit is rebooted unless the SAVE command is issued to writ...

Страница 57: ...C software by assigning control functions to ports with no devices attached or by turning off control functions For example if you turn off the Operator Port ASSIGN MNT OFF you will not be able to ent...

Страница 58: ...imum queue depth Destination node must be a neighbor node CANMSG cannot contain more than 25 messages in its queue If the number of canned message in queue falls below minimum queue depth additional c...

Страница 59: ...then clear link statistics see STAT COMPRESSION actio n Enable disable data compression on outbound messages data reports Intermediate nodes pass on the information in compressed form The destination...

Страница 60: ...attern number ALL means recognize all patterns 1 8 CORPAT TX pppp ALWAYS Define Transmitter correlation pattern to send Pattern 1 is the default and is the only pattern recognized if no other specifie...

Страница 61: ...group number from first sensor CR10X INTERVAL n Acquisition scan interval in seconds OFF disables acq scan n seconds 0 32767 CR10X MAXQ nnn Set maximum number of reports to queue for each scan of the...

Страница 62: ...l units CR10X data scaled in Campbell Scientific floating point format CR10X SECURITY nnnn nnnn nnnn Enter CR10X Internal Security Codes See CR10X manual If CR10X program contains security codes this...

Страница 63: ...cond and third sensors DATE mm dd yy Set system date If no parameters are given show current date If parameters are given DOS calendar will also be updated mm month dd day yy year 1 12 1 31 0 99 DEL M...

Страница 64: ...emote 256 4095 sss msg serial number 1 4095 1 245 DUTY CYCLE percent Set transmitter duty cycle default is 10 Duty cycle increases in increments of 5 percent 1 100 1 100 FLASH Initiate flash memory do...

Страница 65: ...requency Synthesizer must be enabled via the SYNTH ON command for FREQ UENCIES to have any effect This command is meaningless on an MCC 545C Tx Tx frequency in MHz times 100 Rx Rx frequency in MHz tim...

Страница 66: ...ault 30 n milliseconds between idle probes 30 30 000 HELP command Display help information on specified command If no parameter entered all commands are sequentially displayed in alphabetical order co...

Страница 67: ...n composite networks when host link is not available STOP stop transmitting if host connection lost CONTINUE keep transmitting if host connection lost but set bit flagging loss in probe OFF ignore hos...

Страница 68: ...e considers connectivity established AUTO means no connectivity established FIXED Default means connect only with specified Master NOTE If command does not change the ID or Master Station the SAVE and...

Страница 69: ...automatic 10 minute timeout for LOS role and 60 minute timeout for TRANSPOND role Logs you off disables ALL following operator commands except LOGON PENTM or SDATA LOGON password LOGON used to allow...

Страница 70: ...ation p priority dest1 destn destination s name node name nnnn Station ID Master 1 245 Remote 256 4095 A Z 0 9 A Z 0 9 1 4095 MM Print current value of RF signal on Receiver MODE Print operating mode...

Страница 71: ...isplay network routing table for all selected neighbors NET no neighbors NET1 2 1 2 etc neighbors NET all all neighbors NET STAT Display network statistics Statistics accumulate from the beginning of...

Страница 72: ...e probe mode If no parameters are entered transmit single pulse probe Enter transmit single pulse probe Enter P to display current pulse probe mode settings Enter P xxx to send a single periodic probe...

Страница 73: ...t of current Entek MDP configuration PENTM ALERTEVENTS mask Set bit mask indicating Entek MDP status bits regarding as alarms Status bits are checked against this mask on intercepted position reports...

Страница 74: ...of poll retry retry count for failed polls 1 86400 1 59 1 10 1 99 POS interval format protocol Display initialize internal MCC 545C timing for reporting GPS position data Specify update period in seco...

Страница 75: ...ol format of these reports action ON enable OFF disable DUPL ON enable duplicate filtering DUPL OFF disable duplicate filtering FORMAT LON G output report on two lines FORMAT SHO RT output report on o...

Страница 76: ...n MCC Remote Emergency Device RED The entered ID code is used with RED messages generated by the MCC 545C using RED TEST or RED TX nn call sign prefix nnn call sign suffix 0 99 0 999 RED NUM n Set dea...

Страница 77: ...atistics for all Remote Stations or for given IDs up to 12 nnnn Station ID Master 1 245 Remote 256 4095 1 4095 REMOTE TYPE aaaaa Display set communication characteristics of the unit Determines how ce...

Страница 78: ...eteor burst or line of sight Thresholds are specified in idle probes per minute To prevent LOS operation altogether set the low threshold to 1000 if the unit s Master is half duplex or 5500 if it is f...

Страница 79: ...the command string will be executed whenever the specified time interval elapses during the day If timeframe basis TIME the command string will be executed at the specified time The OFFSET option all...

Страница 80: ...erial number 1 255 SET BAUD function rate flow Adjust baud rate and flow control of specified port When no parameters are entered this command displays I O configurations function user interface funct...

Страница 81: ...and serial numbers of message packets in specified message list If parameter is not entered all message packet names and numbers are displayed nnnn destination Station ID Master 1 245 Remote 256 4095...

Страница 82: ...time to live TTR time to retransmit N UP neighbor up N DOWN neighbor down R DOWN Remote down OTL outstanding text limit CONNP connectivity msg precedence ETEAP End to End ACK precedence HTO history f...

Страница 83: ...xx Set interval in hours starting at midnight when MCC 545C automatically transmits statistics to Master Station xx interval 1 24 hours STATION TYPE aaaaa Display set special Station functionality De...

Страница 84: ...orts to determine which one is currently active assuming the switch may have been manually controlled while it was off From then on it monitors the two Masters assuming the primary Master 1 is connect...

Страница 85: ...no parameters are specified show current time If parameters are given DOS calendar will also be updated hh hours mm minutes ss seconds 0 23 0 59 0 59 TIMEZONE UTC sys Set local time zone offsets from...

Страница 86: ...COMMANDS COMMAND DESCRIPTION PARAMETERS RANGE TYPE action nnn nnn nnnn Control auditing of messages entered at specified units and routed through the MCC 545C action ON enable OFF disable nnn units to...

Страница 87: ...a read TX Read sensors and transmit data read TIME Set time of MCC 545C in logger TEST Operate a component in test mode ALERT FLOOD HORN GATE WARNING OUT Set output register BYTE BIT BITNU MBER BITS S...

Страница 88: ...ter 1 245 Remote 256 4095 1 4095 WARNING TIMEOUT t Define display timeout period in seconds for a Flood Base Station to determine a communications failure t timeout in seconds 10 3600 WEATHER action E...

Отзывы:

Нет отзывов