Preface
R&S
®
OSP
‑
B157W8
(PLUS)
R&S
®
OSP
‑
B157WX
8
Getting Started 1178.5808.02 ─ 03
It uses coaxial RF architecture and features:
●
Electromechanical RF relay switches for flexible operation of up to 8 DUT
channels
●
The module can forward incoming signals on each DUT channel to the con-
nected DUT input of the R&S
OSP-B157W8 or R&S
OSP-B157W8PLUS. This
forwarding is used for measurements at frequencies
up to 6
GHz
, which the
R&S
OSP-B157W8 can handle, or
up to 7.5
GHz
, which the R&S
OSP-
B157W8PLUS can handle.
●
Alternatively, incoming signals on
one single DUT channel
can be switched to
the module's [Rx] port and on to a connected signal analyzer, receiver or other
measurement instrument. This switching state is typically used for measure-
ments at frequencies above 6
GHz or 7.5
GHz and
up to 40
GHz
, which the
base modules cannot handle. (Signals for spurious emission measurements
up to 18
GHz are also switched to the instrument connected to the extension
module's [Rx] port.)
●
If the R&S
OSP-B157WX forwards the DUT's signals, it also switches the sig-
nal analyzer path from its [RxOUT] port (input port) to its [Rx] port. This [Rx]
port is connected to the signal analyzer or test receiver, while the [Rx] port of
the R&S
OSP-B157W8 or R&S
OSP-B157W8PLUS is connected to the
[RxOUT] port (input port) of the R&S
OSP-B157WX.
●
Additionally, you can add the signal of a companion device to one of the DUT
paths via its internal switches and a directional coupler. The type of compan-
ion device depends on the DUT. For example, if your DUT is a Wi-Fi trans-
ceiver, the companion device can be a wideband radiocommunication tester
R&S
CMW500. In this example, it would simulate a wireless router that main-
tains a bidirectional connection with the transceiver.
Screenshots
Sample screenshots in this documentation are used to illustrate as much as
possible of the functions provided by the modules and of potential interde-
pendencies between parameters. Note that:
●
The values in these screenshots do
not
necessarily represent realistic
application situations.
●
Do not consider the values as recommended by Rohde
&
Schwarz.
●
The screenshots shown can differ, depending on your particular equip-
ment and configuration.
