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Rhotheta RT-600 Light, Руководство пользователя

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Rhotheta RT-600 Light Скачать руководство пользователя страница 41

User manual: Installation and Operation of Direction Finder System RHOTHETA RT-600 / SAR-DF 517 

- 41 - 

 

6.2.4 

Optional serial input (protocol description) 

Specification serial input: (optional) 

The serial input is normaly only used for service and maintenance. Nevertheless it is possible via this interface, 
to remote control the actual frequency and the squelchlevel of the DF system. 
 
If a valid data stream is send to the DF, then the actual frequency selection at the DCU is switched to Block2 / 
AUX0.  At  this  memory  channel  the  new  frequency  is  stored  and  used  automatically.  (Refer  to  the  chapter 
Frequency  Selection  Page).  If  the  frequency  is  changed  (by  one  valid  datastream)  no  more  serial  input  is 
necessary. The actual frequency can be changed again at any time by manual operation at the DCU. 
 
The  timing  of  serial  input  (if  used)  is  strictly  fixed.  The  optional  serial  input  has  to  take  place  directly  after  a 
complete serial output (max. 50 ms delay time). 
 
If a new changed frequency is commanded to the DCU via this serial input interface, it can take up to 1 sec of 
time until this new frequency is ready for operation/bearing. It is strictly not recommended to use the frequency 
remote control for any scan mode. The frequency control has to be used for static frequency change only. 
 
 
Register of databytes: 

byte no. 

 

[0] 

Header 0xC0 

[1] 

Number of bytes in the complete message (including header and checksumbyte) 

[2..3] 

(not used for normal operation / any byte values allowed) 

[4] 

Volume [0..100]% 

[5..8] 

Frequency [Hz]   (frequency is rounded to the according grid automatically) 

Valid Range for Standard Version: 

Valid Range for LE Version: 

118000000 … 123000000 [Hz]   @   8.333 kHz 

118000000 … 123000000 [Hz]   @    8.333 kHz 

164000000 … 174000000 [Hz]   @    8.333 kHz 

156050000 … 162025000 [Hz]   @   5.000 kHz 

201000000 … 215995000 [Hz]   @    5.000 kHz 

240000000 … 246000000 [Hz]   @   8.333 kHz 

216000000 … 218995000 [Hz]   @   12.500 kHz

 

219000000 … 220000000 [Hz]   @   10.000 kHz 

400000000 … 410000000 [Hz]   @   8.333 kHz 

400000000 … 410000000 [Hz]   @    8.333 kHz 

 

[9] 

Squelchlevel Manual = [0…60]% 
             Autosql= [  -1] Warning, use only for pulsed signals! (as example: CpSarsat, LoJack) 

[10] 

(not used for normal operation / any byte values allowed) 

[11] 

Internal Dimming [0..100%] 

[12] 

Checksum is the 2’s complement of the modulo-256 sum of all bytes without checksum-byte [0..n-1] 

 

Содержание RT-600 Light

Страница 1: ...anual Installation and Operating R RT T 6 60 00 0 S SA AR R D DF F 5 51 17 7 Wideband Precision Direction Finder with extended COSPAS SARSAT range special scan modes Standard Version Law Enforcement V...

Страница 2: ...15 Internet www rhotheta de E Mail email rhotheta de Copyright RHOTHETA Elektronik GmbH All rights reserved Issue 2011 06 14 Rev 2 03 a Edition valid for DCU with Software Rev 3 20 Edition valid for...

Страница 3: ...aw Enforcement and Medical Operation 18 2 3 1 LoJack Pages 18 2 3 2 ETS Pages 20 2 3 3 Med Track Pages 20 2 3 4 Law Enforcement Scan Mode 20 2 4 Frequency Selection Page 21 2 4 1 Frequency Selection P...

Страница 4: ...RSAT Decode Window 15 121 500 MHz Bearing Window in COSPAS SARSAT Mode 16 Display in COSPAS SARSAT Scan Mode 16 LoJack Bearing Screen 18 ID Only Mode Menu Options 18 ID Editing Sub Page 19 ID Only Mod...

Страница 5: ...ling channel 16 of maritime radio and the common COSPAS SARSAT emergency signal The Law Enforcement version which offers the possibility to bear the traditional VHF emergency frequency the common COSP...

Страница 6: ...e user is able to perform several adjustments of configuration These adjustments can be set up in the setup menu refer to chapter Operating Setup Page The most important adjustments are Mounting posit...

Страница 7: ...below a button or switch the function described in this field may be selected through the operational element above or below this menu field In case of the Page Menu the active page is high lighted w...

Страница 8: ...on the unit through the ON OFF Push Button a start screen is shown on the LC Display for five seconds Power On Screen 1 The upper line is showing the name of the product RT 600 SAR DF 517 2 The second...

Страница 9: ...de 2 Brightness information as percentage value from 5 to 100 in steps of 5 is displayed instead of the Page field in the upper right corner of the display 3 The Page rotary switch can be used to adju...

Страница 10: ...ll produce a correct bearing indication thanks to sophisticated bearing technologies used in the RT 600 system Fluctuations due to noise will be small even at low signal levels however the reaction ti...

Страница 11: ...time If the squelch is operating in automatic squelch mode this is indicated by a sign A c above the squelch level marker Depending on the SN Ratio Setup the squelch level is set slightly higher than...

Страница 12: ...switch activates a sub page Please refer to the Frequency Selection section for details 2 VOLUME Rotary switch to adjust the audio output level The volume of a linked external speaker or amplifier ca...

Страница 13: ...corresponds to bearin g direct ahead 2 Spread maximum deviation of un averaged bearing values This is an indicator of bearing quality The wider the range between the directions of maximum deviation t...

Страница 14: ...406 MHz band is transmitted only every 50 seconds in form of a short data burst of 440 or 520 ms Approaching the transmitter it will be received earlier than the 121 500 MHz continuous signal due to i...

Страница 15: ...en received in minutes seconds format 5 Position field showing in case of location protocols being used by the beacon the encoded GNSS position data latitude longitude transmitted by the beacon 6 Rang...

Страница 16: ...al page belongs to the COSPAS SARSAT page section 2 2 6 COSPAS SARSAT Scan Mode If the COSPAS SARSAT scan mode has been selected the COSPAS SARSAT channels as selectable manually from the Frequency Se...

Страница 17: ...signal that has been found using the scan mode is automatically transferred to the AUX memory channel Scan mode can be left by entering a new frequency through the frequency or memory setup In order...

Страница 18: ...recommended to operate the receiver with automatic squelch sensitivity setting in case of LoJack operation However manual setup of the Squelch level would be possible Please refer to the chapter Squel...

Страница 19: ...manually 5 Value rotary switch allowing to modify the currently selected position within the ID field 6 Exit hotkey F1 push button allowing to switch back to the LoJack bearing window If an ID has be...

Страница 20: ...evel through the SQL rotary switch to the maximum value 60 There are no special functional options available Reception of a signal above squelch level is indicated by an acoustic signal beep tone Med...

Страница 21: ...scale on which a frequency can be chosen The frequency scale is organized in frequency blocks The name of the frequency block is indicated below the frequency scale They are Law Enforcement scanning f...

Страница 22: ...me of the channel which is re used in other displays as name of the currently used frequency AUX 1 4 2 Frequency field shows the frequency currently stored for each channel The memory channel currentl...

Страница 23: ...sion Only 216 000 218 9875 MHz 12 5 kHz LE ETS Law Enforcement Version Only 219 000 220 000 MHz 10 kHz LE ETS Law Enforcement Version Only 240 000 246 000 MHz 8 33 kHz Air UHF Standard Version Only 40...

Страница 24: ...t shall be selected If this option is not selected correctly all bearing values will be mirror inverted 6 Bearing Offset menu option to include a constant offset correction to the bearing indication B...

Страница 25: ...9 BAD RU Remote Unit Incompatibility or bad data connection between display and external serial Remote Unit or PC Error 8 VOLT AU Antenna Unit Voltage supply at Antenna Unit too low 9 0 V Main voltag...

Страница 26: ...the aircraft or to the roof of the vehicle If there is no metallic mounting surface available a metallic sheet or similar net with connection to ground has to be applied first between vehicle body an...

Страница 27: ...ic waves In the near field of this antenna unit any conductive e g metallic obstacle will influence the incoming wave field and create reflections which decrease the bearing accuracy These are general...

Страница 28: ...User manual Installation and Operation of Direction Finder System RHOTHETA RT 600 SAR DF 517 28 Examples of properly installed direction finder antenna units...

Страница 29: ...l the display control unit perform the following steps 1 Remove the cover caps of the four rotary switches 2 Loose the screws visible below the position of the cover caps 3 Remove the plastic button f...

Страница 30: ...n Finder System RHOTHETA RT 600 SAR DF 517 30 4 3 Cable Connection Wiring Also refer to chapter Technical Data for details 6 pol Amphenol plug female PTG06SE10 6S SQ max length of cable ca 10 20 m 9 p...

Страница 31: ...channel A S within 400 msec COSPAS SARSAT analysis Reception and analysis decoding of COSPAS SARSAT data signals 112 Bit short message resp 144 Bit long message 400 baud biphase L encoded phase modula...

Страница 32: ...the LCD dimming operates in night NVG mode Maximum brightness ca 4 of day default mode brightness Input Impedance 50 k Pin 4 NVG status line for LCD dimming optional Low active as example switch to g...

Страница 33: ...rature 30 C 80 C Antenna Unit permissible operating temperature 3 40 C 60 C permissible storage temperature 55 C 80 C Protective system Antenna Unit IP 67 Weights Display Control Unit 250 g Antenna Un...

Страница 34: ...User manual Installation and Operation of Direction Finder System RHOTHETA RT 600 SAR DF 517 34 Drawing Antenna Unit...

Страница 35: ...z 20 157 000 MHz 161 600 MHz 21 157 050 MHz 161 650 MHz 22 157 100 MHz 161 700 MHz 23 157 150 MHz 161 750 MHz 24 157 200 MHz 161 800 MHz 25 157 250 MHz 161 850 MHz 26 157 300 MHz 161 900 MHz 27 157 35...

Страница 36: ...le frequency change is done by additional remote control units Timing of serial data Serial standard output This output data is always available and contains all relevant DF bearing data For detailed...

Страница 37: ...r and checksumbyte 2 Status 1 HSB x x x x x x x x LSB 0 Receiving 1 Squelch controlled by AU X 2 Permission RL Calibration 3 Line Night 4 Line NVG 5 Dimming External 6 Autosquelch Active 7 0 Standard...

Страница 38: ...elchlevel byte 13 Range 0 60 without signal the actual squelchlevel should always be adjusted a little bit over the noise level Refer to the chapter Squelch operation Level byte 27 Range 0 99 actual r...

Страница 39: ...Bit 0 0 No new 406 MSG decoded data available 1 New valid 406 MSG available Sync Frame Ok Check Error Status for Bit Errors Bit 6 1 AutoSquelch Level valid range 0 60 decimal Bit 7 1 Squelch controlle...

Страница 40: ...all valid and received LoJack pulses are indicated 0x94 Lojack Decode Bearing Mode with active Filter ID 1 Number of bytes in the complete data stream decimal 26 default value 2 Nonrelevant 3 Bit 0 Re...

Страница 41: ...l input interface it can take up to 1 sec of time until this new frequency is ready for operation bearing It is strictly not recommended to use the frequency remote control for any scan mode The frequ...

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