Preparing for Use
R&S
®
OSP
‑
B157W8
(PLUS)
R&S
®
OSP
‑
B157WX
20
Getting Started 1178.5808.02 ─ 03
Risk of injuries
When removing the rear feet, the switch unit can slip out of its casing.
To avoid the risk of personal injuries and any damage, put the switch unit
onto its front handles before removing the rear feet and taking off the cas-
ing.
When mounting the casing back onto the switch unit, take care not to pinch
your fingers. Also pay attention not to damage or pull off protruding parts,
especially cables.
Screw the rear feet back on immediately after mounting the casing. Do not
move the switch unit with the rear feet missing.
Removing an existing (old) R&S OSP-B157 module
If you want to install the R&S
OSP-B157WX in a switch unit, which is occu-
pied 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-B157WX
For mounting the module into an R&S
OSP120 switch unit:
1. Turn off the switch unit.
2. Unplug the power supply cable.
3. Disconnect all other cables, too.
Mounting the Extension Module