Preparing for Use
R&S
®
OSP
‑
B157W8
(PLUS)
R&S
®
OSP
‑
B157WX
18
Getting Started 1178.5808.02 ─ 03
Figure 3-3: Opened switch unit with guide cage mounted and base module inserted
1 = Guide cage, mounted in the switch unit
2 = Front plate of the inserted module
3 = Rear end of the inserted module
4 = Secondary power cable for the control board, already existing in the switch unit
5 = 2 screws that you can reach through holes in the upper plate of the guide cage, fixing
its left side
6 = 3 screws, fixing the protruding flange at the right side of the guide cage (underneath the
secondary power cable)
7 = Cable W20 (here shown as partly visible through the guide cage)
8 = 12-pole connector of cable W20, connected to connector X12 of the switch unit's con-
trol board
9 = 4-pole connector at the short end of cable W20 (4 wires), plugged into connector X201
on the module's RF board (see detail at left-hand side)
10 = 4-pole connector at the long end of cable W20 (2 wires), plugged into connector X203
on the module's data acquisition board
11 = Cable holder for fixing cable W20
12 = Detail: identifying the connector for the short end (9) of cable W20
13 = Detail: view from the front of the switch unit (front panel not shown) through the empty
guide cage towards the rear panel
33. Screw the module's front plate to the switch unit's front panel (10 countersunk
screws, type Torx M2.5x6, included in the delivery).
34. Screw the module's rear plate, which you have already attached to the switch
), to the module (3 countersunk screws, type Torx
M2.5x8, included in the delivery).
Mounting the Base Module