Tektronix TDS7000 Series Programmer's Manual page 448

CH<x>:PROBEFunc:EXTatten
Description
This command instructs the oscilloscope when to make vertical settings (offset and scale) for the
specified channel effective. The vertical settings become effective at the input of the external network or
transducer (of a specified input÷output transfer ratio) when the output is connected to the input of the
probe attached to the channel.
The channel is specified by x, which ranges from 1 through 4. There is also a corresponding query, which
returns the user-specified attenuation. Note that, as the name implies, this command deals with an
attenuation factor, not a gain factor, unlike CH<x>:PRObe? (Note that this command returns a value
independent of the External Attenuation). For example, if you specify a 20x attenuation factor for channel
1, then the commands return the following values (assuming that a 1x probe is presently attached, since
the external attenuation is used in combination with the probe attenuation):
CH1:PRObe:EXTA?
CH1:PRObe?
This command is equivalent to selecting Attenuation from the Vertical command and then viewing or
setting Ext Atten.
Group
Vertical
Related Commands
CH<x>:PROBEFunc:EXTDBatten (see page 447)
Syntax 1
CH<x>:PROBEFunc:EXTatten <NR3>
Syntax 2
CH<x>:PROBEFunc:EXTatten?
Argument
• <NR3>
This is the attenuation value, which is specified as a multiplier in the range from 1.00E-10 to 1.00E+10.
Example 1
CH1:PROBEFunc:EXTatten 167.00E-3
This command specifies an external 'gain of six' network, which is connected between the user's input
signal and the input of the probe attached to channel 1.
Example 2
CH2:PROBEFunc:EXTatten?
This query might return
:CH2:PROBEFUNC:EXTATTEN 1.0000E+00
channel 2 is connected directly to the user's signal.
446
20.00E+0
1.0E+0
, indicating that the probe attached to