Preparing for Use
R&S
®
OSP
‑
B157W8
(PLUS)
R&S
®
OSP
‑
B157WX
15
Getting Started 1178.5808.02 ─ 03
Removing an existing (old) R&S OSP-B157 module
If you want to install the R&S
OSP-B157W8 or R&S
OSP-B157W8PLUS in
a switch unit, which is occupied by an existing module (for example
R&S
OSP-B157), first remove the existing module.
Remove the existing module in the reverse order of the mounting proce-
dure, described in the
OSP (1505.3896.82), for
example chapter "Replacing the Option OSP-B157".
Mounting procedure for the R&S
OSP-B157W8 or R&S
OSP-B157W8PLUS
For mounting the module into an R&S
OSP150 or R&S
OSP120 switch unit:
1. Turn off the switch unit.
2. Unplug the power supply cable.
3. Disconnect all other cables, too.
4. If the switch unit holds any modules, remove these modules and their ribbon
cables, except for a module in the rear slot A11.
5. If the rear slot A11 of the switch unit holds a module, we recommend removing
it. (Optionally you can leave it there, but you cannot operate it due to missing
control interfaces.)
6. If you have removed a module from rear slot A11, close the open slot with a
blind plate, using the same screws that fixed the module.
7. If blind plates cover unused front slots A12F or A13F of the switch unit,
remove these blind plates.
8. If blind plates cover unused rear slots A12 or A13 of the switch unit, remove
these blind plates.
9. If a blind plate covers an unused rear slot A11 of the switch unit, leave it there.
10. Place the switch unit on its front handles.
11. Optionally, if at the switch unit's feet there are yellow stickers that you want to
save, remove the blue rubber bumpers from the feet.
12. Screw off the switch unit's feet.
Removing these screws releases the switch unit's casing.
13. Push the switch unit's casing upwards.
14. Remove the casing from the switch unit.
Mounting the Base Module