
38 N2820/1A User’s Guide
2 Probing
N2825A User-Defined Head
In the dialog box, use the User Def Head Resistance field to
enter the R
SENSE
resistance. Because the oscilloscope
associates this resistance with the N2825A head, you only
need to enter the value of your R
SENSE
resistor the first time
that you use the N2825A head.
On InfiniiVision oscilloscopes, associate an N2825A head
with a specific R
SENSE
resistance by pressing the front- panel
channel key that is associated with the probe’s primary
input. Then, click the Probe softkey followed by the R-Sense
softkey.
Using Multiple R
SENSE
Resistances in Your DUTs?
In this situation you can do one of the following actions:
■ Enter the User Def Head Resistance each time that you use
the N2825A head, or
■ On Infiniium oscilloscopes, open the Probe Configuration
dialog box, and use the Add Head field to assign a unique
name for each of your N2825A/R
SENSE
resistance
associations. Each time that you connect the probe, select
the appropriate name in the dialog box.
■ If you use less than six different R
SENSE
resistances in
your DUTs, you can avoid entering the resistance or
selecting a name (Infiniium only) each time that you use
the N2825A. This is accomplished by changing the
N2825A’s internal ID resistor as explained in “To Change
an N2825A Head’s ID Resistor” on page 45. After
changing the ID resistor, the first time that you use the
N2825A you must enter the associated R
SENSE
resistance.
However, for subsequent uses, the oscilloscope
automatically associates this resistance with the specific
N2825A head. You can order additional N2825A heads
from Agilent.
NOTE Remember to mark your different N2825A heads, using a marker pen or
tape, so that you can distinguish between them.
Komentarze do niniejszej Instrukcji