9.  Trigger Type 
Display the currently selected trigger type and trigger condition setting. 
Different labels are displayed when different trigger types are selected. 
For example: 
 represents triggering on the rising edge in “Edge” trigger. 
 
10. Trigger Source 
Display the trigger source currently selected (CH1, CH2, EXT, EXT/5, AC Line or 
D0-D15). Different labels are displayed when different trigger sources are 
selected and the color of the trigger parameter area will change accordingly.  
For example: 
 denotes that CH1 is selected as the trigger source. Note: 
EXT/5 is only applicable to MSO2000A and MSO2000A-S models oscilloscopes. 
 
11. Trigger Level 
  When the trigger source is set to CH1 or CH2, the trigger level label 
 is 
displayed at the right of the screen and the trigger level value is displayed at 
the upper-right corner of the screen. When using TRIGGER 
  LEVEL to 
modify the trigger level, the trigger level value will change with the up and 
down of 
. 
  When the trigger source is set to EXT or EXT/5, the trigger level value is 
displayed at the upper-right corner of the screen. No trigger level label is 
displayed. 
  When the trigger source is set to AC Line, no trigger level value and trigger 
level label is displayed. 
  When the trigger source is set to D0 to D15, the trigger threshold is 
displayed at the upper-right corner of the screen. No trigger level label is 
displayed. 
  In Runt trigger, Slope trigger and Windows trigger, two trigger level labels 
(
 and  ) are displayed.  
 
12. CH1 Vertical Scale 
  Display the voltage value per grid of CH1 waveform vertically.  
  Use VIRTICAL 
  SCALE of CH1 to modify this parameter. 
  The following labels will be displayed according to the current channel 
setting: channel coupling (e.g. 
), input impedance (e.g.  ) and 
bandwidth limit (e.g. 
).