CRT  FUNCTION  KEY  DEFINITIONS 
The  Function  Keys  on the  CRT  keyboard  are  used  to control  the various  4020  operations.  Table  2 defines  the  various 
keys  and  their  uses. 
Table  2 
Function  Key  Definitions 
l 
FUNCTION  KEY 
F2 
F3 
F18 
F19 
PFl 
PF2 
PF3 
PF4 
CTRL  W 
DEFINITION 
Print  Screen 
(Printer  Required) 
Set-Up 
Main  Menu 
Historical  Log  Menu 
Acknowledge  Key 
Alarm  Silence 
System  Reset  Key 
Log  In/Log  Out  Key 
Refreshes  Current  Screen 
* For  Micro-Term  terminals.  Other  units  may  vary.  See  user  manual  for  your  terminal. 
SET-UP  PROCEDURE 
The  CRT  must  be  set-up  correctly  in order  to  receive  and  transmit  data.  An  operator  may  enter  the  set-up  mode  to 
verify  proper  configuration.  However,  set-up  procedures  are  performed  by  Simplex  personnel  and  should  not 
normally  be  performed  by  operators.  (See  publication  FA4-1 l-224  for  CRT  set-up  parameters.) 
CRT  SCREEN  DISPLAYS 
A variety  of  CRT  screen  displays  are  used  to  support  4020  operations.  Header  information  is displayed  on  the  first 
three  lines  of the  screen.  The  first  line  shows  the  time  on  the  left,  custom  banner  in the  center,  and  the  operator  on 
the  right  side  of the  screen.  The  second  line  shows  the  date  on the  left  and  the  current  access  level  on the  right.  The 
third  line  shows  the  overall  4020  system  status.  Prompt/Message  information  is  shown  on  all  screens.  The  bottom 
line  displays  prompts,  help  messages,  and  error  messages.  These  screens  tell  you  what  to  do  and  when  to  do  it. 
CRT  screen  displays  are  shown  in  Figures  5 through  9. 
CRT  MAIN  MENU  SCREEN 
The  CRT  Main  Menu  Screen  (Figure  5)  is the  first  screen  to  appear  after  power  is applied  to the  system.  From  the 
Main  Menu  Screen,  you  can  display  various  system  information  screens.  Items  1 through  6 are  the  available  choices 
within  this  menu.  View  any  item  by  either  moving  the  cursor  to  the  selection  or  by  typing  the  item  number  and  then 
pressing  the  <Enter>  key. 
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