Modules
R&S
®
OSP
110
User Manual 1178.7100.02 ─ 05
3.36
R&S
OSP-B121VL RF Switch Module
Figure 3-84: R&S
OSP-B121VL (here with 3 SPDT relays)
The one-slot
OSP-B121VL (order no. 1528.1654.61/.62/.63) consists of
latching failsafe electromechanical SPDT relays with internal termination.
It is based on the module
, with the following differences:
●
Latching
relays
●
Frequency range from DC to
67
GHz
(instead of 18
GHz)
●
PC
1.85
(female) connectors (instead of SMA connectors)
●
Availability of three versions:
–
Version 1528.1654
.61
with 1 SPDT relays (K11)
–
Version 1528.1654
.62
with 2 SPDT relays (K11, K12)
–
Version 1528.1654
.63
with 3 SPDT relays (K11 to K13)
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.
R&S
OSP-B121VL RF Switch Module
