Tektronix FCA3000 Series, Programmer'S Manual

Page: 86 / 191

Command Descriptions
Syntax
INPut{[1]|2}:LEVel:RELative <Numeric value>
INPut{[1]|2}:LEVel:RELative?
Arguments
INPut{[1]|2}
speci fi es the input channel to set (1 = A, 2 = B). If no value is
entered for this argument, the command sets the attenuation for Input A.
<NUMERIC VALUE>
is a positive number between 0 and 100 (%).
Returns
<Numeric value>
Examples
INPUT:LEVEL:RELATIVE 20
(Input A set to 20% to measure ECL rise time)
INPUT2:RELATIVE 80
(Input B set to 80% to measure ECL rise time)
INPut{[1]|2}:SLOPe
Selects if the instrument should trigger on a positive or a negative transition.
Selecting negative slope is useful for Time Interval measurements.
The slope is fi xed for Pos/Neg Pulse Width/Duty Factor and Rise/Fall Time.
Arming slope is not affected by this command. Use ARM:STARt:SLOPe and
ARM:STOP:SLOPe instead.
Group Input
Syntax
INPut{[1]|2}:SLOPe {POS | NEG}
INPut{[1]|2}:SLOPe?
Arguments
INPut{[1]|2}
speci fi es the input channel to set (1 = A, 2 = B). If no value is
entered for this argument, the command sets the attenuation for Input A.
POS
sets the instrument to trigger on a positive signal transition.
NEG
sets the instrument to trigger on a negative signal transition.
Returns POS | NEG
Examples
INPUT:SLOPE POS
INPUT2:SLOPE NEG
2-70 FCA3000, FCA3100, MCA3000 Series Programmer Manual