Microcom Design ucom DAMS-NT DigiRIT Operation Manual Download Page 34

Release 1 

DAMS-NT DigiRIT Operation Manual 

12/14/2012 

Microcom Design, Inc. 

33 

 

To  change  “Slot  Number  Mode”,  the  user  enters  “N=”  followed  by  one  of  the  three  mode 
keywords  (“VC”,  “CNT”,  or  “SRC”)  at  the  selection  prompt.    As  with  the  “Allow  baud 
Unknown” option, these keywords can be alternately abbreviated to just the first letter. 

Once  the  Message  Setup  options  are  adjusted  to  the  desired  settings,  the  “Save  &  Apply 
Changes”  menu  item  must  be  utilized  to  store  the  new  settings  and  re-configure  the  DigiRIT 
accordingly; similar to the “System Setup” and “Virtual Channel Setup”. 

Table 3:  DRGS Source Code to Slot Number 

DRGS 

Code 

Slot 

Number 

 

Source Description 

UP 

001 

NOAA WCDA Primary E/W – Wallops Island, VA 

UB 

002 

NOAA WCDA Backup E/W – Wallops Island, VA 

NP 

011 

NOAA NSOF Primary E/W – Suitland, MD 

NB 

012 

NOAA NSOF Backup E/W – Suitland, MD 

XE 

021 

USGS EROS East – Sioux Falls, SD 

XW 

022 

USGS EROS West – Sioux Falls, SD 

RE 

031 

USACE MVR East – Rock Island, IL 

RW 

032 

USACE MVR West – Rock Island, IL 

d1 

051 

NIFC West Unit 1 – Boise, ID 

d2 

052 

NIFC West Unit 2 – Boise, ID 

LE 

061 

USACE LRD East – Cincinnati, OH 

SF 

071 

SFWMD East – West Palm Beach, FL 

OW 

081 

USACE NWO – Omaha, NE 

 

999 

Unknown DRGS Source Code 

 

3.3. 

Network Interface Configuration 

The  DigiRIT  Receiver  provides  two  TCP/IP  network  interfaces,  the  DCS  Message  and  LRIT 
sockets,  as  discussed  in  Sections  1.3.2  and  1.3.3,  respectively.    The  default  IP  Address  for  the 
DCS  Message  socket  is  192.168.54.101,  and  the  default  IP  Address  for  the  LRIT  socket  is 
192.168.54.102.  Both sockets have a default Port number of 4001.  While these settings should 
be adequate for most installations, the IP Addresses and Port numbers can be can be changed if 
necessary. 

To  provide  these  network  interfaces,  the  DigiRIT  utilizes  a  serial-to-Ethernet  module  (P/N 
MiiNePort  E2)  manufactured  by  Moxa  Inc  (

www.moxa.com

).    The  Moxa  module  includes  a 

Web Console that can be accessed from any web browser application; such as Microsoft Internet 
Explorer or Mozilla Firefox.   

To access the Moxa Web Console simply launch the preferred web browser and enter the current 
IP Address of the interface that needs to be changed.  As shown in Figure 21, the Web Console 
will  come  up  in  the  “Overview”  screen.    This  screen  provides  several  useful  pieces  of 
information including the Model and Serial Number of the module, the current Firmware version 
(of the Moxa module, not the DigiRIT) and the unique MAC Address of the Moxa module.  

Summary of Contents for ucom DAMS-NT DigiRIT

Page 1: ...DAMS NT DigiRIT Digital LRIT HRIT Receiver Operation Manual Release 1 Revision A 12 14 2012 Microcom Design Inc 10948 Beaver Dam Road Suite C Hunt Valley MD 21030...

Page 2: ...tion and Hardware Overview 15 2 2 1 Front Panel Connections Controls and Indication 16 2 2 1 1 Front Panel Display 16 2 2 1 1 1 Startup Screens 16 2 2 1 1 2 Operational Status Screen 16 2 2 1 2 Front...

Page 3: ...ure 4 DigiRIT Receiver Rear Panel 8 Figure 5 DigiRIT LRIT TCP IP Processing 13 Figure 6 DigiRIT Startup Screen Sequence 16 Figure 7 DigiRIT Status Screen 17 Figure 8 Accessing the Pushbutton Setup Mod...

Page 4: ...tion Manual 12 14 2012 iii List of Tables Table 1 55 Character DCP Message Header Format 10 Table 2 Error Message Flag Values 11 Table 3 DRGS Source Code to Slot Number 33 List of Appendices APPENDIX...

Page 5: ...tion This Operation Manual is divided into the following sections Section 1 provides introductory background and theory of operation information Section 2 provides hardware installation and hardware o...

Page 6: ...re reserved internationally for exclusive use in this service To maintain GOES DCS channelization and frequency stability and to provide an amplitude reference NOAA NESDIS uplinks two Pilot or beacon...

Page 7: ...l before it is sent to the DigiRIT Receiver The DigiRIT Receiver can accept a wide range of IF frequencies so it is compatible with numerous front ends Front ends typically require a DC supply to oper...

Page 8: ...own DAMS NT Client software use of the DAMS NT interface socket means the DigiRIT Receiver is compatible with other DAMS NT Client applications As such the computer server and host application can be...

Page 9: ...ately 14 5 All primary connections are provided on the rear panel while various test connections and controls are provided on the front panel Figure 3 shows the front panel of the DigiRIT while Figure...

Page 10: ...sage Interface is a one way stream of DCS messages After a client establishes a connection the DigiRIT immediately begins to send DCS messages as they become available i e the DAMS NT Client does not...

Page 11: ...resenting up to 8 bit error or message flags See Table 2 34 OrigAddress 8 Hex Characters DCP Address See Below 42 DcpAddress 8 Hex Characters DCP Address See Below 50 Length 5 Digits Zero Filled Numbe...

Page 12: ...IT message data These legacy fields have been around for some time and should be well known and understood by most DCS users The ErrorFlags field in the message header contains two hex digits of messa...

Page 13: ...tification Standards Please contact NOAA for the latest information on parity checking and character replacement in the LRIT DCS re broadcast Again the DigiRIT Receiver does not perform and parity che...

Page 14: ...nded for custom developers this interface is provided via a separate network connector with a different IP address With a few notable exceptions this interface is essentially the raw LRIT transmission...

Page 15: ...enna Front End Power The DigiRIT can be configured to optionally provide DC Power at the Antenna In connectors to be utilized to power the satellite dish s front end The DC output is nominally 12 VDC...

Page 16: ...ilize the magnetic direction not the true direction Alternately the DishPointer website and applications provide a line of site indication overlaid on a satellite map which allows accurate azimuth ali...

Page 17: ...mation is automatically saved to non volatile memory and recalled whenever the Receiver is powered up i e the unit should always come up in the same operational state as it was in prior to shutdown or...

Page 18: ...ignal level In the example of Figure 7 the reported signal level is 46 1 dBm and the attenuation is set to 10 dB this means that the demodulator signal level is 56 1 dBm which is in the nominal range...

Page 19: ...he DigiRIT receiver for operation Please refer to Section 3 1 for details on the use of these buttons 2 2 1 4 Test Port The front panel Test Port is designed to be utilized with an ASCII terminal appl...

Page 20: ...rcuitry should be between 90 to 50 dBm As such if the nominal input signal is above 50 dBm then input attenuation see 3 1 3 should be used to reduce signal strength presented to the demodulator 2 2 2...

Page 21: ...ormation Transmission but future GOES Satellites are expected to utilize HRIT High Rate Information Transmission The LRIT TCP IP utilizes a standard RJ 45 Ethernet connector The communication protocol...

Page 22: ...Release 1 DAMS NT DigiRIT Operation Manual 12 14 2012 Microcom Design Inc 21 2 2 2 8 Cooling Fan Located on the Rear Panel is small cooling fan Do not obstruct the air flow around the cooling fan...

Page 23: ...significant latency issues Even the highest priority messages which are currently coming from a single DCP being used to test the latency issue by NOAA NOS are affected NOAA is currently working to r...

Page 24: ...operation To prevent the DigiRIT from being left in the Setup mode a 15 second inactivity timer is automatically started once the unit enters Setup Pressing either the SETUP or the SELECT button will...

Page 25: ...e highest value is 9 and the lowest value is 0 SELECT IF FREQUENCY SELECT IF FREQUENCY SELECT IF FREQUENCY SELECT IF FREQUENCY 137 137 137 137 500 500 500 500 MHz MHz MHz MHz SELECT IF FREQUENCY SELEC...

Page 26: ...ns 2 2 1 1 2 and 2 2 2 1 1 the DigiRIT Receiver will accept an input signal range of 90 to 20 dBm However the nominal signal presented to the demodulator circuitry should be between 90 to 50 dBm As su...

Page 27: ...e VC validation process The following rules apply to the Virtual Channel settings A VC value of 63 corresponds to LRIT Fill packets and acts as an unused VC selection Except for the unused case VC ent...

Page 28: ...UT LOOP TO INPUT LOOP TO INPUT LOOP TO INPUT Figure 15 Completing the Pushbutton Setup Sequence Pressing SELECT once will provide the second option SAVE AND EXIT Pressing SETUP at this point will dire...

Page 29: ...op is active will call up the Test Port s Main Menu The DigiRIT Main Menu is shown in Figure 17 and consists of three options I System Info S System Setup Menu V Virtual Channel Setup Menu The System...

Page 30: ...bvious distinction between the menu approach versus the pushbutton setup is that the current values for the related entries are all visible in the menu system As noted in Section 3 1 1 separate values...

Page 31: ...tup menu the current values for the Virtual Channel Setup are displayed as part of the menu information and serves as a format guide when making changes As with the pushbutton setup this menu lets the...

Page 32: ...transmitted messages the Baud rate is not truly applicable The DigiRIT can handle messages without the Baud specified in one of two ways First the DigiRIT can simply parrot this fact by reporting the...

Page 33: ...eaches 999 it will rollover back to 000 While not recommended for operational use this mode can be useful for test purposes to verify all received messages are being reported and captured via the DAMS...

Page 34: ...ach FL OW 081 USACE NWO Omaha NE 999 Unknown DRGS Source Code 3 3 Network Interface Configuration The DigiRIT Receiver provides two TCP IP network interfaces the DCS Message and LRIT sockets as discus...

Page 35: ...ddress of the unit simply enter the new address in the corresponding edit box and click the Submit button Figure 22 Web Console Network Settings Before applying the changes the Web Console will displa...

Page 36: ...ncorrectly altering some of these fields can adversely affect the operation of the DigiRIT Receiver Once the Port number field has been altered once again click the Submit button to lock it in but not...

Page 37: ...application that can locate any and all Moxa modules on a network without having to know the configured IP Addresses of the modules a useful feature if the IP Address is incorrectly altered and or the...

Page 38: ...ological Satellites DADDS DCS Administrative and Data Distribution System DAMS NT Data Acquisition and Monitoring System New Technology DAPS Data Collection System Automated Processing System dB Decib...

Page 39: ...in Minimum MSB Most Significant Bit NESDIS National Environmental Satellite Data and Information Service NIC Network Interface Controller or Network Interface Card NIC MUX Network Interface Controller...

Page 40: ...Inc 39 TCP Transfer Control Protocol U S United States UHF Ultra High Frequency 401 7 to 402 1 MHz for this DCS application UTC V Volts VC Virtual Channel Vpp Volts peak to peak WCDA Wallops Command a...

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