Preparing for Use
R&S
®
OSP
‑
B157W8
(PLUS)
R&S
®
OSP
‑
B157WX
21
Getting Started 1178.5808.02 ─ 03
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 a blind plate covers the unused rear slot A11 of the switch unit, leave it
there.
8. If you have removed one or two modules from rear slots A12 or A13, close the
open slots with blind plates, using the same screws that fixed the modules.
9. If blind plates cover unused rear slots A12 or A13 of the switch unit, leave
them there.
10. If blind plates cover unused front slots A12F or A13F of the switch unit,
remove these blind plates.
11. Place the switch unit on its front handles.
12. 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.
13. Screw off the switch unit's feet.
Removing these screws releases the switch unit's casing.
14. Push the switch unit's casing upwards.
15. Remove the casing from the switch unit.
16. Lay down the switch unit, with its open side facing upwards.
17. Unplug the CAN bus cable (W3) from connector X8 on the switch unit's main
board, but not from the CAN connector on the switch unit's rear panel.
18. Unplug the LAN cable (W4) from the RJ45 connector on the processor board,
but not from the LAN connector on the switch unit's rear panel.
19. Remove the cable holder of the CAN and LAN cable.
20. Screw the adapter plate (item (1) in
), which comes separately, to
the base plate of the switch unit (12 cylinder-head screws, type Torx M2.5x6,
included in the delivery).
Mounting the Extension Module