Keysight N2820A User Manual page 55

To Identify the R
CAUTION
N2820/1A User's Guide
To Identify the R
Resistance Using an ID Resistor
SENSE
By changing the N2825A's internal ID resistor, the probe head can
automatically indicate to the oscilloscope the value of the
DUT-mounted R
probe heads can be configured in this manner using the ID resistor
values shown in
Table 5 Valid N2825A ID Resistors
Resistor Description
Value
16.2 kΩ Default value. Resistor, ±1%, 0.063W, TC±100 thick film 0402 SMT
19.6 kΩ Resistor, ±1%, 0.063W, TC±100 thick film 0402 SMT
26.1 kΩ Resistor, ±1%, 0.063W, TC±100 thick film 0402 SMT
42.4 kΩ Resistor, ±1%, 0.063W, TC±100 thick film 0402 SMT
61.9 kΩ Resistor, ±1%, 0.063W, TC±100 thick film 0402 SMT
For example, you might install a 19.6 kΩ ID resistor in one N2825A
to identify measurements using a 50 mΩ R
resistor in another N2825A to identify measurements using a
300 mΩ R
SENSE
you must perform a one-time entry of the associated R
resistance on the oscilloscope. For subsequent uses, the
oscilloscope automatically uses the specified R
N2825A head. You can order additional N2825A heads from
Keysight.
In the following procedure, always wear an ESD wrist strap and work at a
static-safe workstation. Not doing so can result in the probe head
becoming permanently damaged.
Resistance Using an ID Resistor
SENSE
being used. Up to five dedicated N2825A
SENSE
Table 6.
. The first time that you use the modified N2825A,
Using N2825A Probe Heads
and a 26.2 kΩ ID
SENSE
SENSE
value for each
SENSE
3
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