• Home
  • Download PDF
  • Order CD-ROM
  • Order in Print
Link Protocol and Interface Control
SYNC MODE SWITCH

Fire Controlman Volume 06-Digital Communications
Page Navigation
  19    20    21    22    23  24  25    26    27    28    29  
Figure 2-15.—The AN/USQ-59 Mode Control panel. DTS  CONTROLS  AND  INDICATORS Many parameters that affect the operation of the DTS  are  under  the  operator’s  control,  whether  the station is operating as a picket or as the net control station. Both the operator and the technician must be familiar  with  the  various  controls  and  indicators associated   with   the   DTS.   The   AN/USQ-59   uses several control panels that are usually mounted next to  the  operator’s  display  console.  These  panels  enable the operator and the technician to control and monitor the  net  operation. The control panels include a  Mode Control panel, a TADIL A Control panel, and an Address  Selection Indicator panel. Although the AN/USQ-59 control panels  are  used  here  to  show  the  controls  and indicators of a Link-11 DTS, other data terminal sets have similar controls. DTS Mode Control Panel The   DTS   mode   control   panel   controls   and indicators are shown in figure 2-15. The following is a summary of how the controls affect the operation of the link and what the indicators mean. TRANSMIT  MODE  INDICATOR—  Lights when the DTS is in the transmit mode. RECEIVE MODE INDICATOR—  Lights  when the DTS is in the receive mode. SUMMARY  FAULT  INDICATOR—  Lights when a fault in the DTS is detected while the DTS is in  the  OPERATE  mode.  There  are  27  performance monitor  fault-sensing  circuits  in  the  data  converter (modem) of the DTS. During the OPERATE mode, 14 of these sensors can cause a summary fault. The fault-sensing circuits monitor areas such as various power  supplies,  signal  quality,  preamble  presence, timing, and audio signal quality. When the DTS is in SELF TEST, the summary fault lamp is lighted when a  fault  is  isolated  to  a  function  defined  by  switch positions  on  the  fault  isolation  control  and  built-in tests  routines. LAMP TEST BUTTON— Causes all indicators on  the  mode  control  panel,  the  TADIL  A  control panel, and the address control unit to light. FAULT  MONITOR/RESET  SWITCH—  In the MONITOR  position,  this  switch  allows  the  fault- sensing function of the DTS to operate normally and provide a fault summary signal to the DTS control. When the switch in placed in the RESET position, the fault-sensing   circuits   of   the   DTS   are   reset.   The SUMMARY  FAULT  lamp  is  turned  off  when  the fault-sensing circuits are reset. INTERNAL  100  KHZ/EXTERNAL  SWITCH- Allows  for  the  selection  of  the  internal  or  external 100-kHz  frequency  standard. DOPPLER CORR ON/CORR OFF SWITCH- Enables the DTS Doppler correction when placed in the CORR ON position. 2-13






Western Governors University

Privacy Statement
Press Release
Contact

© Copyright Integrated Publishing, Inc.. All Rights Reserved. Design by Strategico.