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5-11
Table 5-3
Differential and common-mode isolation testing
Test
no.
Differential or
common-mode
test
Channels closed
1
Row 1
None
2
Column 1
1!1!1
3
Column 2
1!1!2
4
Column 3
1!1!3
5
Column 4
1!1!4
6
Column 5
1!1!5
7
Column 6
1!1!6
8
Column 7
1!1!7
9
Column 8
1!1!8
10
Column 9
1!1!9
11
Column 10
1!1!10
12
Row 2
1!1!1 and 1!2!1
13
Row 3
1!1!1 and 1!3!1
14
Row 4
1!1!1 and 1!4!1
5.4
Special handling of static-sensitive
devices
CMOS and other high-impedance devices are subject
to possible static discharge damage because of the
high-impedance levels involved. The following pre-
cautions pertain speci
Þ
cally to static-sensitive devices.
However, since many devices in the Model 7012 are
static-sensitive, it is recommended that they all be
treated as static-sensitive.
1. Such devices should be transported and handled
only in containers specially designed to prevent or
dissipate static build-up. Typically, these devices
will be received in anti-static containers made of
plastic or foam. Keep these parts in their original
containers until ready for installation.
2. Remove the devices from their protective contain-
ers only at a properly grounded work station. Also,
ground yourself with a suitable wrist strap while
working with these devices.
3. Handle the devices only by the body; do not touch
the pins.
4. Any printed circuit board into which the device is
to be inserted must
Þ
rst be grounded to the bench
or table.
5. Use only anti-static type de-soldering tools and
grounded-tip soldering irons.
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