Modules
R&S
®
OSP
81
User Manual 1178.7100.02 ─ 05
For remote control, refer to the chapters
3.15
R&S
OSP-B111E RF Switch Module
Figure 3-40: R&S
OSP-B111E
The one-slot
OSP-B111E (order no. 1505.4605.26) consists of 6 failsafe
electromechanical SPDT relays, frequency range DC to 26.5
GHz, with non-terminated
SMA (female) connectors.
The module's SMA connectors are geometrically compatible with 3.5
mm and 2.92
mm
connectors of RF cables that support 26.5
GHz.
Note:
56 N
·
cm
for
SMA
connectors.
The relays operate independently from each other. The terminal port is labeled with C
(common), the other relay ports are labeled with NC (normally closed) and NO (nor-
mally open). Terminal C is connected either with relay port NC or NO.
The type of relays is monostable (or "failsafe"), hence, with no voltage applied, an RF
connection is provided from C to NC, while NO is not connected to C ("Pos = 0"). To
disconnect NC and connect C to NO ("Pos = 1"), a continuous voltage must be applied
to the relay.
The relays are mounted directly into the module's panel and soldered to the module's
printed board, to avoid relay cabling and allow a compact module size.
The switch unit provides power supply and control via a single module bus cable to a
module bus connector on the module's printed board. The module's on-board memory
stores its configuration data.
R&S
OSP-B111E RF Switch Module