Modules
R&S
®
OSP
58
User Manual 1178.7100.02 ─ 05
3.2
R&S
OSP-BM6x RF Switch Module
Figure 3-4: R&S
OSP-BM6x (here with 1 SP6T + 3 SPDT relays)
The one-slot
OSP-BM6x (order no. 1528.1625.11/.12/.13) consists of 1
failsafe electromechanical SP6T relay and up to 3 failsafe electromechanical SPDT
relays, frequency range DC to 18
GHz, with non-terminated SMA (female) connectors.
The module is available in three versions:
●
R&S
OSP-BM61, 1528.1625
.11
with 1 SP6T relay (K1) and
1
SPDT relays (K11)
●
R&S
OSP-BM62, 1528.1625
.12
with 1 SP6T relay (K1) and
2
SPDT relays (K11,
K12)
●
R&S
OSP-BM63, 1528.1625
.13
with 1 SP6T relay (K1) and
3
SPDT relays (K11 to
K13)
Note:
56 N
·
cm
for
SMA
connectors.
SP6T relay
The terminal port is labeled with C (common), the other relay ports are labeled with
numbers.
The relay type is monostable (or "failsafe open"). Hence, with no voltage applied to the
relay, no RF connection is provided from terminal C to any of the numbered ports. To
establish an RF connection between C and one of the numbered ports, a continuous
voltage must be applied to the corresponding power terminal of the relay.
The relay is 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.
SPDT relays
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.
R&S
OSP-BM6x RF Switch Module