Tour of the Extension Module
R&S
®
OSP
‑
B157W8
(PLUS)
R&S
®
OSP
‑
B157WX
37
Getting Started 1178.5808.02 ─ 03
Optionally, the control system can switch an [RxOUT] signal (instead of a DUT) or
a [X1] signal (companion device, in addition to a DUT) to the module's [Rx] port.
Signal paths for different frequency ranges
You must define the signal paths in such a way that the test system per-
forms out-of-band measurements up to 40
GHz via the R&S
OSP-B157WX.
5.1
Connecting Devices and a Base Module to the
Extension Module
We recommend placing the R&S
OSP-B157WX on top of the base module or
mounting the two modules in the same arrangement into a 19'' rack.
Observe maximum input power and no DC voltage
The R&S
OSP-B157WX typically forwards RF signals from a DUT to the
R&S
OSP-B157W8 or R&S
OSP-B157W8PLUS. Hence, if you connect the
R&S
OSP-B157WX to the base module, be aware of the following limita-
tions for the front ports:
●
A maximum tolerable input power level (dBm)
●
No tolerance for a direct current (DC) voltage share in the input signal
If the forwarded signals exceed these limits, the internal circuits of the base
module can be damaged.
Do not exceed the dBm levels and "0 VDC" limits that are indicated on the
front (and rear) panels of the R&S
OSP-B157W8 or R&S
OSP-
B157W8PLUS.
Connecting the R&S
OSP-B157WX
1. Connect the port [OUT1] of the R&S
OSP-B157WX to the port [DUT1] of the
R&S
OSP-B157W8 or R&S
OSP-B157W8PLUS.
Connecting Devices and a Base Module to the Extension Module