background image

 

 

Page 2 of 6 

Your source for quality GNSS Networking Solutions and Design Services! 

 

 

 

Date: 6/4/07 

 

Document number:  236 

Rev. 002  Organization:  S&M 

approximately 8 VDC into the device to over come the losses of reverse polarity 
diodes, regulator losses and diode output OR function.  
 

Antenna Current Fault Detection (Ant Fault Detect) 

If the antenna current exceeds either a high or low threshold value then the device 
will remove power from the antenna or input port and it will display an error 
message on the display and via serial port.   
 
After approximately 10 to 13 seconds the unit will retry to see if the current fault 
condition has been removed by clearing the error message and momentarily 
reconnecting power to the input port.  If a high or low threshold current level is no 
longer exceeded then the device will once again operate normally. The exact 
trigger level[s] can be set via the serial port. 
(

AT11XLV_A11XLV_Serial_Interface_Reference

)     

 
If you do not have the serial port option the factory defaults are low current 
threshold level is less than 15ma and the high threshold level is greater 
than150ma.   
 

Oscillation Detection (OSC Detect) 

The A11XLV is capable of detecting high levels of RF indicative of feed back from 
the input of the device to the output or a runaway condition.  If the OSC detect 
circuitry threshold is exceeded the unit will remove power from the antenna or input 
put and it will display an error message on the display and via the serial port.  The 
unit will not retry and requires a key press or equivalent character[s] from the serial 
port to clear the error and to retry by restoring antenna power.  The exact trigger 
level[s] can be set via the serial port.  
(

AT11XLV_A11XLV_Serial_Interface_Reference

LCD display 

The A11XLV can be equipped with a LCD display to provide feedback to the user. 

LCD Backlight  

The 

LCD display can be equipped with an LCD back light.  The back light is only 

available with the power supply option.  

 

 

Serial Port Control 

The A11XLV can be controlled via a RS232 port 

Summary of Contents for A11XLV

Page 1: ...pable of adjustable gain from 40dB to 15dB It can provide less than 40dB total gain but not more RF Filtering There are three RF filtering options L1 L2 filtering With L1L2 filtering the gain provided will be in the frequency pass bands of L1 1575 42 MHz and L2 1227 60 MHz L1 filtering With L1filtering the gain provided will be in the pass band only i e 1575 42 MHz No RF filtering With no RF filte...

Page 2: ...V_A11XLV_Serial_Interface_Reference If you do not have the serial port option the factory defaults are low current threshold level is less than 15ma and the high threshold level is greater than150ma Oscillation Detection OSC Detect The A11XLV is capable of detecting high levels of RF indicative of feed back from the input of the device to the output or a runaway condition If the OSC detect circuit...

Page 3: ...ences The device will echo the text to the serial port and in most case it will be the same as the front panel LCD or it will be more verbose Note the letter D d will also function as the down arrow key and the letter U u will function as the up arrow key The terminal ESC sequences ESC B or 0x1B and then a 0x41 will function as an up arrow key The terminal ESC sequences ESC A or 0x1B and then a 0x...

Page 4: ...tes the menu system The menu system is flat i e it is a loop of items that can be selected for modification or selected to display the current values or settings Once an item is selected the up and down keys can be used to change the displayed values of the particular item After approximately 10 seconds with no user input button presses from the user or characters on the serial port the menu retur...

Page 5: ...ss middle down button 2 press Enter 3 Adjust brightness using up down buttons Gain Sets the gain of the amplifier Instructions 4 press up or down button until Level appears on screen 5 press Enter 6 Adjust gain level up or down using up down buttons Contrast Sets the contrast of the LCD display Instructions 7 press middle down or up button until contrast is displayed on screen 8 press Enter 9 Adju...

Page 6: ...e Antenna operation turns the antenna power on and off Note Antenna power is on the input port This action does not affect the output port so this will not turn off power to the devices powered by the output port provided the output port it is a pass DC PDC port Antenna VDC Displays the voltage that is available to power the output ports Note this only displays the voltage available to the ports I...

Reviews: