System verification
R&S
®
QAR50
51
User Manual 1179.4992.02 ─ 02
11
System verification
The R&S
QAR50 provides a verification procedure to validate the quality of the mea-
surements. Verification consists of a series of measurements with standardized DUTs
which are located in the center the R&S
QAR50.
Verification requires the verification kit (R&S
QAR50-Z44, order no. 1343.0082.02). All
verification objects are delivered with a quality approved surface finish. Any surface
features are either intentional or are considered to be uncritical for the intended pur-
pose.
The verification kit includes the following parts;
●
Frame for verification plates
●
2 x plastic verification plates with different thickness
●
1 x glass-ceramic verification plate
●
1 x metal verification plate
●
1 x transparent plastic verification plate for phase measurement verification
The verification plates each have a sticker with some numbers on it. These values indi-
cate the limits that must not be violated during the verification. Each sticker contains
four values:
●
a
77
: one-way mean attenuation in the frequency range from 76
GHz to 77
GHz.
●
a
81
: one-way mean attenuation in the frequency range from 76
GHz to 81
GHz.
●
r
77
: mean reflection in the frequency range from 76
GHz to 77
GHz.
●
r
81
: mean reflection in the frequency range from 76
GHz to 81
GHz.
The process of the verification is independent of the position of the R&S
QAR50 (lying
or upright). It works the same in both cases, only the orientation of the verification kit is
either vertical (in lying position) or horizontal (in upright position).
If verification fails, validate the verification setup. If verification fails several times in a
row, despite a valid setup, contact Rohde
&
Schwarz customer support to calibrate the
R&S
QAR50 and check the hardware.
Warm-up time
Let the R&S
QAR50 warm up for at least 90 minutes before using it.
Installing the frame for the verification objects
The verification objects come with a frame that holds the objects.
The R&S
QAR50 has mounting rails on each side of the main body that can hold the
frame.
1. Slide the frame onto the mounting rails of the R&S
QAR50.
You can only install the frame one way with the screws on the frame pointing to the
side that contains cluster "1" as indicated in