Tour of the Base Module
R&S
®
OSP
‑
B157W8
(PLUS)
R&S
®
OSP
‑
B157WX
33
Getting Started 1178.5808.02 ─ 03
Depending on the switch unit that you use, the following additional connectors are
available:
●
If you use an R&S
OSP150 switch unit, its rear panel has a power supply con-
nector with fuse.
●
If you use an R&S
OSP120 switch unit, its front panel has a DVI video monitor
interface and two USB
2.0 ports (all inactive in this setup). Its rear panel has a
power supply connector with fuse.
For information on the various connectors of the switch unit and for replacing the
fuse, refer to the
OSP.
Connect the power supply connector to an isolated ground receptacle of your
mains grid. The supply voltage must be between 110
VAC and 240
VAC with fre-
quencies ranging from 50 Hz to 60 Hz. Within these ranges, the device is auto-
matically adapted to the supply voltage. To turn the power on or off, put the AC
power switch into position I (on) or 0 (off).
The following table describes all other external connectors of the base module.
Table 4-1: External connectors overview of the R&S
OSP-B157W8 or R&S
OSP-
B157W8PLUS
Panel Label
Direction Signal
Type
Value range
Front
DUT1 ..
. DUT8
BiDir
(*)
Device under test, channel
1 to 8, max. 30
dBm
RF SMA
1 GHz to 18 GHz
Front
COMP
BiDir
Companion device, max.
20
dBm
RF SMA
1 GHz to 6 GHz
Front
X1
BiDir
Companion device exten-
sion (to R&S
OSP-
B157WX)
RF SMA
1 GHz to 18 GHz
Front
Rx
Out
(**)
Spectrum analyzer / test
receiver
RF SMA
1 GHz to 18 GHz
Rear
Trig 4
In
Trigger input Ch4
Digital BNC
High: 3.3 V, low: 0 V
Rear
Trig 3
Out
Trigger output Ch3
Digital BNC
High: 3.3 V, low: 0 V
Rear
LAN
BiDir
Ethernet
Digital RJ45
Rear
ANT
Out
Antenna output
RF SMA
1 GHz to 18 GHz
Rear
VIDEO
In
Video input, max. 3
V
Analog SMA
DC to 1 MHz
Rear
GEN
In
Signal generator, max.
30
dBm
RF SMA
1 GHz to 18 GHz
Rear
VGEN
In
Vector signal generator
RF SMA
1 GHz to 18 GHz
Connecting Devices to the Base Module
