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Tour of the Base Module
R&S
®
OSP
‑
B157W8
(PLUS)
R&S
®
OSP
‑
B157WX
31
Getting Started 1178.5808.02 ─ 03
As the LAN and CAN connectors on the rear panel of the switch unit are
disabled, use the RJ45 LAN connector of the module R&S
OSP-B157W8 or
R&S
OSP-B157W8PLUS itself (top center in
The R&S
OSP-B157W8 and R&S
OSP-B157W8PLUS operate according to the
following circuit diagram:
Figure 4-3: Circuit diagram of the R&S
OSP-B157W8 and R&S
OSP-B157W8PLUS RF
board
Orange, right
= Front DUT and instrument ports
Orange, left
= Instrument or trigger ports, and data acquisition board
Yellow
= 1-to-2 switches
Red
= Power detectors
Green
= 1-to-n switches, attenuators or bi-directional couplers
Blue
= Splitters/combiners
Pink
= 1-to-2 switches or splitters/combiners in the 18
GHz by-path
Light green
= Attenuators or splitters/combiners
(*), yellow highligh-
ted
= Step attenuator R2, only available in R&S
OSP-B157W8PLUS, controlled
together with step attenuator R1033 in the companion path