Modules
R&S
®
OSP
78
User Manual 1178.7100.02 ─ 05
3.14
R&S
OSP-B108 DC Multiplexer Module
Figure 3-36: R&S
OSP-B108
The one-slot
OSP-B108 (order no. 1505.5718.02) is a four-pole, one-to-
six multiplexer (4P6T) for DC signals from 0
V to 60
V, with 30
VA maximum power
(same level for all pins).
The module has 1 male input connector and 3 female output connectors. It is control-
led by a logic interface and switches up to 4 input channels to one out of 6 output posi-
tions.
A typical application example with this module is multiplexing of power supply (two
power lines with force and sense wires, hence 4 wires all together) to up to 6 DUTs.
The relay type is electromechanical
. Hence, without a control signal no
connections are made and the relay goes to its reset state, in which the common termi-
nals are not connected to any output pins.
●
The 4
input
channels are available on the first 8 pins (in groups of 2) of the upper
left 9-pin D-Sub connector (male). The remaining pin 9 is connected to ground
(GND), see
.
Note that these input pins are not read-out in any way by the switch unit. Instead,
the inputs are only switched in a direct connection to the selected output ports, as
described below. Also, signals can travel in a bidirectional way, hence, you can use
the output ports as inputs, and vice versa.
●
The
output
channels are available on the first 8 sockets, each, of the 3 other 9-pin
D-Sub connectors (female). The remaining socket 9 of each output port is connec-
ted to GND, see
.
The channels are grouped on the connectors:
–
Channel 1+2 are on the lower right OUT connector
–
Channel 3+4 are on the upper right OUT connector
–
Channel 5+6 are on the lower left OUT connector
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-B108 DC Multiplexer Module
