Preparing for Use
R&S
®
ZVA-Z75, -Z90, -Z110, -Z140, -Z170, -Z220, -Z325, -Z500
12
Quick Start Guide 1307.7039.62 ─ 10
2.4.3 Adjusting the Feet of the Instrument
The instrument can be used with three or four feet attached to the bottom side. It is
recommended to use three feet: two in the front and one in the middle of the rear. In
most cases a suitable start setup for instrument alignment is as follows: Screw the front
feet into the instrument as far as possible and use the rear foot to align the instrument
parallel to the surface of the bench top. When you mount a DUT to two instruments
(see
chapter 2.4.8, "Mounting a DUT"
,
on page 16) use the feet for further alignment.
Fig. 2-5: Setup with three feet (left) and four feet (right)
2.4.4 Selecting and Mounting a Test Port Adapter
Depending on the instrument model one or two test port adapters are available (see
chapter 2.1, "Test Port Adapter (Waveguide Flange)"
,
on page 6). Select the appropri-
ate adapter depending on the DUTs to be measured:
●
Standard adapter (R&S ZVA-Z110, R&S
ZVA-Z140, R&S
ZVA-Z170, R&S
ZVA-
Z220, R&S
ZVA-Z325, R&S
ZVA-Z500):
Use this adapter if you want to measure DUTs with thin pins only.
●
HP/Agilent compatible adapter (R&S
ZVA-Z75, R&S
ZVA-Z90 and R&S ZVA-
Z110):
Use this adapter if you want to measure DUTs with thick pins.
DUTs with thin pins can also be connected to the HP/A adapter (useful if you have
both types of DUT). But the connection of DUTs with small pins is more accurate if the
standard adapter is used. The reduced alignment condition can typically be compensa-
ted using two additional pins above and below the waveguide cross-section.
Mount the selected adapter to the waveguide flange of the instrument using the deliv-
ered screws and the included hex ball driver. A tight and accurate connection is very
important to ensure precise calibration and measurement results.
Putting the Converter into Operation
