Modules
R&S
®
OSP
75
User Manual 1178.7100.02 ─ 05
If this module is not factory-mounted, contact Rohde
&
Schwarz
for mounting it.
R&S
OSP-B106 (order no. 1505.5601.02) consists
of 6 failsafe electromechanical non-terminated SPDT relays: 3 with BNC (female) con-
nectors and 3 with N (female) connectors.
The SPDT relays K1 to K3 with N-type connectors are suited for a frequency range
from DC to 12.4
GHz.
The SPDT relays K4 to K6 with BNC connectors can be used at frequencies up to
900
MHz. At DC voltages up to a maximum of 30
V
DC, these relays are suited for cur-
rents of up to 2
A.
Note:
150 N
·
cm
for
N
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.
Figure 3-31: Pinout and block diagram of RF switch module R&S
OSP-B106
R&S
OSP-B106 RF Switch Module
