Ac Frequency Response Calibration Connections - Keithley 194 Instruction Manual

MAINTENANCE
II
CMOS devices are designed to operate at high impedance
levels for lower power consumption. As a result, any static
charge that builds up on your person or clothing tnay be
sufficient to destroy these devices if they are not handled
carefully. Table 7-6 lists the static-sensitive devices used in
the Models 194 and 1944. When handling these devices,
use the precautions below to avoid damaging them with
static discharge.
II
II
I - ,
1. The ICs listed in the table should be transported and
handled only in containers designed to prevent static
build-up. Typically, these parts will be received in anti-
. . .* . ,.
static containers of plastic or foam. Keep these devices
in their original containers until ready for installation.
2. Remove the devices from their protective containers only
at a properly grounded work station. Also ground
yourself with a suitable wrist strap.
3. Handle the devices only by the body; do not touch the
7.6 SPECIAL HANDLING OF
STATIC-SENSITIVE DEVICES
Figure 7-6. AC Frequency Response Calibration
pins.
Connections
4. Any printed circuit board into which the device is to be
inserted must also be grounded to the bench or table.
5. Use only anti-static type solder suckers.
6. Use only grounded-tip soldering irons.
7, Once the device is installed on the PC board, it is usually
adequately protected and normal handling can resume.
7-12