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5.4
J4/P4 Frame Ground Connector
Faston AMP PIN
61761-2
Recommended mating connector
AMP 62187-1
Note that DC logic ground in the Printed Circuit Board' is not
connected to frame ground.
Use of the frame ground connection
is very important to reduce ground loops and noise problems
which may cause excess errors.
If used, the hole in J4 will accomodate wire size of
18
AWG max.
6.0
Physical Specifications
This section describes the mechanical dimensions and mounting
recommendations for the ST506.
6.1
Mounting Orientation_,
Recommended orientation is either vertical on either side or
horizontal with PCB down.
The only prohibited orientation is
horizontal with PCB up (disk surface down, parallel and next to
mounting surface).
In the final mounting configuration, insure
that operation of the four shock mounts which isolate the aluminum
base casting from the frame is not restr1cted.
6.2
Mounting Holes
Eight mounting holes, four on bottom and two on each side are
provided for mounting the drive into an enclosure.
The size and
location of these holes, shown in Figure 17, are identical to
the industry standard minifloppy drive.
6.3
Physical Dimensions
OVerall height/width/depth and other key dimensions are shown
in
Figures
17 and 18.
As in the case of the mounting holes,
the
d~ensions
are identical to the minifloppy, allowing a direct
physical replacement.
6.4
Shipping Requirement
During shipping the heads shall be positioned on track
152 to .
eliminate the possibility -of damage.
This shall be done-while'
the discs are spinning.
30
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