Modules
R&S
®
OSP
140
User Manual 1178.7100.02 ─ 05
●
When the relay is
not activated
(control voltage = logical 0) and after a reset, the
relay automatically falls back to its default state. In this state, the ports
P1
-
50
Ω
and
P2
-
C
are connected. The 50
Ω
port is used as output port.
●
When the relay is
activated
(control voltage = logical 1), the ports
P1
-
C
and
P2
-
50
Ω
are connected. The 50
Ω
port is used as output port.
The (groups of) relays in the module operate independently from each other.
Without power supplied to the relay, it has no defined switching state. Therefore, SSRs
are not inherently failsafe, see
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 3-134: Pinout and block diagram of RF switch module R&S
OSP-B142 (here: 3 relays)
In the module version .11 with 1 SPDT relay, the relays K2 and K3 are not available.
In the module version .12 with 2 SPDT relays, the relay K3 is not available.
Figure 3-135: Representations of the module version .03 with 3 DP3T relays on the control screen
R&S
OSP-B142 RF SSR Power Module
