Modules
R&S
®
OSP
133
User Manual 1178.7100.02 ─ 05
3.52
R&S
OSP-B132 RF Switch Module
Figure 3-123: R&S
OSP-B132
R&S
OSP-B132 (order no. 1505.4757.02) consists
of 6 failsafe electromechanical SPDT relays, frequency range DC to 12.4
GHz, with
non-terminated N (female) connectors.
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 module's on-board memory stores its configuration data.
The switch unit provides power supply and control via
two
module bus cables to two
module bus connectors on the module's printed board. The available module bus con-
nectors ("Mxx") are shown in
To find out, which two module bus cables on the switch unit's motherboard your mod-
ule uses, refer to the headline of the control screen as in
module R&S
OSP-B132 uses buses "M01" and "M02". Alternatively, you can query the
connectors by the RC command
To address the relays of the R&S
OSP-B132 in the "channel list string" of remote con-
trol commands, assign the "Mxx" bus names to the relays as follows:
●
The 1
st
module bus (for example "M01") controls the relays K11, K12 and K13
●
The 2
nd
module bus (for example "M02") controls the relays K14, K15 and K16
R&S
OSP-B132 RF Switch Module
