R&S OSP
Instrument Functions
Operating Manual 1505.3896.12 - 14
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operation of the module can be performed via the OSP Panel. See
chapter 3.3
details.
For remote control operation see
chapters 6
and
The OSP-B123/124 is a two-slot module. Within one OSP120 only one module of this
type can be installed.
The OSP frame offers a maximum of three slots. If more than one OSP-B123/124 are
required, the extension unit OSP150 must be used. For further information on the
extension unit OSP150 see
chapter 8.2
5.2.10 RF Switch Module R&S OSP-B125 and R&S OSP-B126
The module R&S OSP-B125/126 is designed as a universal switching module using
terminated RF relays. The OSP-B125/126 contains the following relay configuration:
OSP-B125
OSP-B125
6 x SPDT switches (terminated)
3 x SP6T switch (terminated)
3 x SP6T switch (terminated)
The module is designed for independent control of all relay.
The relay is a failsafe type. In case of the SP6T relay, no RF connection is provided
from the terminal C (Common) to one of the six terminals when no voltage is applied
to the relay. To maintain a RF connection between the terminal C (Common) and one
of the six output terminals, a continuous voltage is to be applied to the corresponding
power terminal of the relay.
In case of the SPDT relay, a RF connection is provided from the terminal C (Common)
to the position NC (normally closed) with no voltage applied to the relay. To maintain a
RF connection between the terminal C (Common) and the position NO (normally
open), a continuous voltage is to be applied to the relay.
Note that for the SP6T relay only one out of the six terminals is allowed to be activated
at the same time. When operating the OSP-B125/126 inside the OSP, the OSP
firmware takes care for correct switching of the SD6T relay.
Figure 5-32: Module R&S OSP-B125
