Getting Started
R&S
®
OSP
44
User Manual 1178.7100.02 ─ 05
Figure 2-23: Selecting a slot
Top
= 2 HU switch unit R&S
OSP220 or R&S
OSP230
Below = 3 HU switch unit R&S
OSP320
Left
= Front view
Right = Rear view
FS
= Front slots FS01 to FS05
RS
= Rear slots RS01 to RS05
FS03 = In the 2 HU switch units, this slot is only available in the R&S
OSP220, not in the R&S
OSP230
4. Unscrew the six Torx
8 screws from the blank plate or existing module.
5. Remove the blank plate or existing module, keeping the six screws.
6. If you mount a two-slot (double-width) or three-slot (triple-width) module, remove a
2
nd
or 3
rd
blank plate or existing module.
Between the slots, also remove the 1 or 2 vertical panel struts (labeled 6 in
) by removing the Torx
8 screws).
7.
CAUTION!
Avoid touching any exposed sharp edges or points inside the switch
unit, which can lead to personal injury, especially cuts in your fingers. Consider
wearing protective gloves.
Find a flat-ribbon cable (module bus cable) in the open slot of the switch unit.
8. If a clamp fixes the flat-ribbon cable, remove the cable from the clamp.
9.
NOTICE!
Avoid bad contact with open cable ends. The 26-pin flat-ribbon cable
(module bus cable) has open cable ends, which can be live with up to 28
V
DC. If
the cable ends contact any conductive parts, for example a switch unit's casing,
this short connection can cause damage in the switch unit's electronic components.
Avoid any contact of the cable ends with conductive parts.
● Fix each unused flat-ribbon cable by its clamp (labeled 5 in
).
● When clamped, ensure that the open cable ends
point away
from the casing.
● If an accidential short contact happens and leads to device damage or malfunc-
tion, call Rohde
&
Schwarz service.
10.
NOTICE!
Avoid bad connector mating. Each module is connected to the switch unit
by one or two 26-pin flat-ribbon cables (up to 28
V
DC,
). The connector
shape serves as protection against reversed (180° rotated) connector mating.
Nevertheless, if you use increased force, you can mate the flat-ribbon cable's con-
nector in reversed orientation. This bad connection can damage the electronic
components of the switch unit and the module. It can damage also the connector
pins.
Mounting a Module
