Modules
R&S
®
OSP
85
User Manual 1178.7100.02 ─ 05
3.18
R&S
OSP-B111UL RF Switch Module
Figure 3-46: R&S
OSP-B111UL (here with 6 SPDT relays)
The one-slot
OSP-B111UL (order no. 1528.1531.13/.16) consists of latch-
ing electromechanical SPDT relays, frequency range DC to 50
GHz, with non-termina-
ted PC 2.4 (female) connectors.
There are module versions with 3 and with 6 SPDT relays:
●
3 relays: order no. 1528.1531.13
●
6 relays: order no. 1528.1531.16
Note:
90 N
·
cm
for
PC
connectors.
The relays operate independently from each other. The terminal port is labeled with C
(common), the other relay ports are labeled with numbers "0" (= default port) and "1".
Terminal C is connected either with relay port "1" or "0". (In modules manufactured
before 2021, the default port was labeled "2" instead of "0".)
Note that the hardware labels "
0
" and "
1
" are represented in the software as positions
"
0
" (= default) and "
1
", respectively. In
states are encoded by the SCPI parameters "
00
" (= default) and "
01
".
The relay type is bistable (or "latching"), hence, with no voltage applied, a relay
remains in its current position.
To change the connection, the controller must send a voltage pulse to the appropriate
switch coil in the relay. After that, no energy is consumed by this relay type.
You can configure two different
to determine, how
latching relays behave after booting the switch unit.
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-B111UL RF Switch Module
