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RACELOGIC Support Centre

Menu Options - Constellation Menu

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This page contains information about the available settings in the Constellation Menu on the LabSat 4 Record & Replay variants.

The Constellation Menu contains the settings that relate to the recording configuration of your LabSat 4. 

Number of Channels
LabSat 4_Menu_Constellation_No.ofChannels (v1.0 RE 23MAY2024)_300px.pngActive Channels_3_500px.png

This setting gives you the ability to select the number of active channels on your LabSat 4. 

Total Number

Use the arrow buttons with this option highlighted to cycle through the number of channels you want to use.

  • 1
  • 2
  • 3

The overview section below will automatically update when you select the number of active channels to show a tick mark for the channels that will be active.

Press the OK button to confirm your selection and return to the Constellation Menu.  
Bandwidth

LabSat 4_Menu_Constellation_Bandwidth (v1.0 RE 23MAY2024)_300.png

Constellation Menu_Bandwidth.png

This setting gives you the ability to select the maximum bandwidth available to use for each active channel. 

Max BW

Use the arrow buttons with this option highlighted to increase or decrease the maximum bandwidth value applied across all active channels.

You can select a maximum bandwidth level between 10 and 60 MHz.

Press the OK button to confirm the selected max bandwidth value and move to the bandwidth value for each available channel. 

Use the arrow buttons to increase or decrease the bandwidth for the first channel. Press the OK button to confirm your selection and move to the next channel. When you confirm the bandwidth for the final channel you will exit the Bandwidth setting and return to the Constellation Menu.

Note: At least one of the active channels must match the level set in the Max BW setting.
Quantization

LabSat 4_Menu_Constellation_Quantization (v1.0 RE 23MAY2024)_300px.png

LS4_1.3_LCD_Constellation_Quantization_CHA.png

This setting gives you the ability to set the quantization applied to each individual channel.

Use the arrow buttons to increase or decrease the quantization applied to the highlighted channel.

  • 1-bit resolution   
  • 2-bit resolution
  • 4-bit resolution
  • 8-bit resolution
  • 12-bit resolution 

Press the OK button to confirm the selected quantization value and move to the next available channel. When you confirm the quantization for the last available channel you will exit the Quantization setting and return to the Constellation Menu.

Model Limitations

The available quantization options will depend on the LabSat 4 Model. 

Constellation Menu_Channel Rate Limit Exceeded.png
Example of Invalid Config message

Constellation: Not Valid

If the selected settings for Number of Channels, Bandwidth and Quantization exceed the unit's recording capability, the unit will display a message in the Constellation menu telling you to reconsider these configurations. Invalid configurations cannot be saved. You will need to change one or more settings to ensure that your unit can record the scenario as needed before you save it or discard the current changes and exit the menu.

Press the OK button with the message highlighted to view the full message. 

You can see an overview of the valid configuration possibilities for LabSat 4 here.

This is, however, an overview of scenarios where the active channels have the same configuration. If you want to use a variable configuration with for the different active channels, you can check your configuration in the Frequency Setup Menu in the demo version of the Web Server.

LabSat4_WebServer_Centre Frequency and Record Rate Usage.gif

The demo versions of the LabSat 4 Web Server and the LabSat 3 Wideband Web Server lets you select the correct bandwidth, channels and quantization settings for your system so that you can see if everything falls within the relevant parameters and limitations.

RF Channels

LabSat 4_Menu_Constellation_RFChannels (v1.0 RE 23MAY2024)_300px.png

LS4_1.3_LCD_Constellation_RF Channels_CH-A.png

This setting gives you the ability to set the Radio Frequency for each available channel.

Use the arrow buttons to navigate to the channel (A, B or C) you want to change the frequency for and press the OK button.
Select Channel

LS4_1.3_LCD_Constellation_RF Channels_CH-A_RF CH A.png

When you have selected a channel, the unit will open the Channel View, which will display the settings applied to the selected channel. Press the OK button with the quantization and bandwidth value highlighted to enter the setting selection screen and change the settings.

 
CH A Setup_500px.png

Use the arrow buttons to increase/decrease the quantization value. Press OK to confirm the currently set value and move to the bandwidth setting. 
Use the arrow buttons to increase/decrease the bandwidth value and press OK to confirm the currently set value and return to the channel view. 

Press the down arrow once to navigate to the frequency setting and press the OK button to enter the setting selection screen.

 
Select Setting 

LabSat 4_Menu_Constellation_RFChannels_ChA_Edit_Freq(v1.0 RE 23MAY2024)_300px.png

LS4_1.3_LCD_Constellation_RF Channels_CH-A_Back.png

Use the arrow buttons to cycle through the available frequencies. (You will see a list of available signals for each frequency listed below.) Press the OK button to confirm your selected frequency and return to the Channel View. 

Use the arrow buttons to navigate to the Back option and press OK to return to the RF Channels setting. 

 

Note:

When you configure the recording settings you will see a warning on the screen if your bands overlap. This may be an intentional choice you have made, and you can ignore the warning and save the configuration. You do, however, need to be aware that overlapping bands may cause issues with your signal.

 

Exit Setting

LS4_1.3_LCD_Constellation_RF Channels_Discard&Exit.png

Back

Press the OK button with this option highlighted to save your selection and return to the Constellation Menu.

Save & Exit

Press the OK button with Save & Exit highlighted to save the changes made to the frequencies and exit to the File Selection Screen.

Discard & Exit

Press the OK button with Discard & Exit highlighted to exit the menu and return to the File Selection Screen without saving any changes.

 
Manual Gain Control

LS4_1.3_LCD_Constellation_Manual Gain Control.png

The Manual Gain Control option in the menu has a tick box next to it, indicating whether the option is enabled or disabled.

Press the OK button with the Manual Gain Control option highlighted to open the settings. 
Enable

LS4_1.3_LCD_Constellation_Manual Gain Control_Enable.png

 

The Enable option in the settings has a tick box next to it that will indicate whether it is enabled (when ticked) or disabled.

Press the OK button with Enable highlighted to enable/disable the Manual Gain Control. 
RX Gain:

LS4_1.3_LCD_Constellation_Manual Gain Control_RX Gain.png

LS4_1.3_LCD_Constellation_Manual Gain Control_Gain Value.png

RX Gain is the gain value for Manual Gain Control. 

Press the OK button with RX Gain highlighted to enter the value screen and adjust the gain value.

Use the arrow buttons to adjust the gain value up or down. You can set a value between 0 and +71. Press OK to confirm the set gain value and return to the Manual Gain Control settings. 
Back

LS4_1.3_LCD_Constellation_Manual Gain Control_Back.png

 

Press the OK button with Back highlighted to exit the Manual Gain Control settings and return to the Constellation Menu. 
Load Default

LS4_1.3_LCD_Constellation_Load Default.png

ConstellationMenu_Load Default_Cropped.svg

This option will reset the record configuration to the default configuration:

Channel Frequency Quantization Bandwidth
A 1575.420 MHz 02 20.0
B 1176.450 MHz 02 40.0
C 1227.600 MHz 02 20.0

Back

Press the OK button with this option highlighted to go back to the Constellation Menu without saving any changes.

Save & Exit

Press the OK button with this option highlighted to use the default configuration and go back to the File Selection Screen. 

Discard & Exit

Press the OK button with Discard & Exit highlighted to exit the menu and return to the File Selection Screen without saving any changes.
Load Custom Profile

LS4_1.3_LCD_Constellation_Load Custom Profile.png

LabSat 4_Menu_Constellation_CustomProfiles_01 (v1.0 RE 23MAY2024)_300px.png

This option gives you the list of your Saved Record Profiles from the Frequency Setup page in the Web Server. You can then select one of these profiles and press the OK button to load it to your LabSat 4. 

Model Limitations

If you attempt to load a custom profile with a higher quantization level than that available on your LabSat 4, the settings from the selected profile will be applied but the quantization level(s) will be adjusted to the maximum level the unit can operate with.  
Exit the Constellation Menu
LabSat 4_Menu_Constellation_Discard&Exit_01 (v1.0 RE 23MAY2024)_300px.png
  • Save and Exit
    Save the changes and return to the file selection screen.
  • Discard and Exit 
    Return to the file selection screen without saving the changes.
Note: If you do not see the Save and Exit option in your menu, the configuration may be invalid.

 
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