(fig. 5-8) and the R3BLSO-1C/R5BLSO-1C (fig. 5-9)
assembly. The assemblies differ from each other in the
front panel organization and in the wiring module
capabilities. The panels provide different arrangements
of 20-pin, 38-pin, 117-pin, and 120-pin connectors.
Both types of linear switches have similar
mechanism and contact assembly modules. The
mechanism assembly module contains the drive motor,
the control circuit module, and the control transformers
for remote operation of the switch. The contact
assembly module consists of a stationary control plate
and a moveable plate to perform the switching
functions.
The linear switches perform either three-position
(R3) or five-position (R5) switching functions. The
three-position switches are used for NORMAL/
ALTERNATE Configuration switching with an OFF
position for circuit isolation. The five-position switches
have an OFF position with the four other switch
positions being used for circuit configuration or
reconfiguratin. For an example, see figure 5-10. One
channel of a duplexed magnetic tape unit can be
switched between four separate CDS IOC channels or
isolated in the OFF position.
The front panels of both types contain a
REMOTE-MANUAL toggle switch. When the switch
is in the REMOTE position, the CSCP has control of the
switch position (normal operating mode). When the
toggle switch is in MANUAL, the switch must be
positioned using the switch handle.
Figure 5-10.—Magnetic tape Interconnection through the DFCS.
5-7
