Atec Agilent-16047A - Manual (Page 27)

22
Compensation and Measurement:
Before measurement, a device guide,
which is fabricated to fit the DUT’s size
must be prepared. A pre-fabricated device
guide is furnished and the method of
preparation is described in the operation
manual. The contact board and the device
guide must be connected to the 16043A/B.
This is easily accomplished by using the
furnished guide pin and screws. For high-
ly precise measurements, it is recommend-
ed to perform open and short compensa-
tion. Open compensation is performed, by
placing nothing between the high and low
terminals of the contact board. For short
compensation, short the high and low ter-
minals and do not contact the G terminal
with the short bar. It is necessary to con-
struct a short bar, which matches the
DUT’s size. The following figures show
how compensation and measurement are
performed.
Up to 110 MHz (4-Terminal Pair) SMD
Test fixture overview
Performing short compensation
The sliding mechanism of the 16043A allows the
measurement of the load capacitors, by sliding the
DUT and the device guide to the next electrode on
the contact board. It is necessary, to raise the pres-
sure arm before the DUT is moved.
1. Place the short bar on the electrodes.
Make sure that the short bar does not connect the G
terminal.
2. Lower the pressure arm to hold the short bar in place.
3. Perform short compensation data measurement.
1. Align the DUT with the device guide and place it on
the contact board.
2. Lower the pressure arm to hold the DUT in place.
3. Adjust the contact pressure using the pressure regulat-
ing screw.
4. Measure.
Inserting a DUT
Sliding mechanism for 16043A