Rohde & Schwarz R&S ATS1000, Инструкция по эксплуатации, Страница: 49 / 81

Operation
R&S
®
ATS1000
49 Instructions Handbook 1179.2983.02 ─ 01
9. Proceed with step 9 under "To place a DUT in the chamber" on page 47.
● DUT Mass and Eccentricity .....................................................................................49
● Metal DUT Holder Set .............................................................................................49
● Telescopic Tube DUT Holder .................................................................................. 51
● Rohacell DUT Holder .............................................................................................. 51
● PCB Holder Set .......................................................................................................52
7.4.1 DUT Mass and Eccentricity
Place the DUT's center of gravity close to the center of the DUT holder.
The maximum permissible mass of your DUT depends on the DUT holder used and on
the DUT's centricity. If you place the DUT's center of gravity with a lateral offset relative
to the turntable's axis of rotation, the maximum permissible mass decreases.
Table 7-1
shows the permissible mass at a given maximum offset.
Table 7-1: Limits of DUT mass
Holder used for DUT Maximum mass, depending on offset from azimuth axis
No holder, DUT directly on turntable 20 kg with 0 mm offset
10 kg with 25 mm offset
DUT on metal holders (combined,
385
mm)
10 kg with up to 10 mm offset
DUT on telescopic polymer holder
(extended) 1 kg with 0 mm offset
0.3 kg with 25 mm offset
DUT on Rohacell holder 3 kg with 0 mm offset
2 kg with 30 mm offset
If your DUT has a mass distribution that is off-center, consider combining this DUT with
a suitable counterpoise. This combination can improve the concentricity of your DUT's
mass with the turntable.
7.4.2 Metal DUT Holder Set
Only an expert user is allowed to mount and configure DUT holders. An operator can
use the DUT holders as configured.
A set of 3 aluminum DUT holder tubes, labeled 1 to 3 in Figure 7-4 , is included in the
delivery. The tubes have the following heights:
●
Short DUT holder tube (1) = 40 mm
●
Medium DUT holder tube (2) = 115 mm
●
Long DUT holder tube (3) = 230 mm
The tubes are designed as a heavy-duty DUT support to stand on the azimuth turnta-
ble. Each tube has a large hole in its wall for feeding cables through to the DUT.
Placing a DUT in the Chamber