Tektronix 2200 Manual Do Utilizador

2-41

Use the GPI Outputs Menu to set E-MEM levels for each assigned 
GPI. You can also set up GPI outputs which trigger each time there 
is a cut on the PGM Bus, and set the length of the GPI trigger 
signal. This menu is accessed from the Config/External If Menu.

1.

Use the 

 button to select a GPI number which 

will trigger each time there is a cut on the PGM Bus. This GPI 
is typically connected to an external device such as a clock/
timer which is reset by each trigger. Such a clock would then 
indicate how long the current source has been on air.

2.

Use the 

button to select the desired GPI number.

3.

Press the 

button to select the desired E-MEM level 

for the selected GPI number.

4.

Use the 

soft knob to select (in number of fields) the 

required GPI duration. Use this to set the duration of GPI 
output triggers.

5.

Repeat Steps 1 through 3 for other GPIs.