Keysight E5260/E5270 User’s Guide, Edition 6 6-21
Function Details
Atto Sense and Switch Unit
NOTE Before using ASU
Instrument connection must be done before the Keysight E5270B is turned on.
The ASU can be used with only the HRSMU that was connected to it when the
performance verification was performed. See “To Display Module Serial Number”
on page 5-13 and confirm that the ASU is the correct one. If it is not correct, get the
correct one and connect it to the HRSMU properly.
The CMU-pot connector is for the LCR meter such as the Keysight 4284A that uses
the four-terminal-pairs. For the other instrument, connect a BNC open connector or
nothing to there. The line will be internally connected to the CMU-cur/AUX-in line.
It is unavailable to use the series resistor in the HRSMU connected to the ASU.
NOTE Before using 1 pA range
The measurement channel connected to the ASU supports the 1 pA range. To use the
1 pA range, set the 1 pA fixed range or the 1 pA limited auto ranging.
The E5270B automatically performs the compensation of the data measured by the
1 pA range and returns the compensated data. You can use either the pre-stored
offset data or the pre-measured offset data.
To measure the offset data, perform the self-calibration before starting the
measurement for a DUT. This offset data is temporarily memorized until the
E5270B is turned off.
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