Rohde & Schwarz OSP-B200S2, User Manual

Page: 106 / 327

Modules
R&S
®
OSP
106 User Manual 1178.7100.02 ─ 05
Note: Mind the torque limit recommendation of 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.
Figure 3-77: Pinout and block diagram of RF switch module R&S OSP-B121
Figure 3-78: Representation of the module on the control screen
For operation, see Chapter 4, "Operation" , on page 147 and Chapter 5, "Functions" ,
on page 155.
For remote control, refer to the chapters Remote Operation and RC Commands . For
an example, see
ROUTe:CLOSe
on page 253.
R&S OSP-B121 RF Switch Module