User Manual for the Type 8300 Compatt 6
(and Variants)
UM-8300-Compatt 6
Issue B3
Equipment Damage. Only use the authorised battery packs in the transponder. Failure to use the
correct batteries could cause damage to the equipment.
Protective coating failure. Do not use any abrasive brushes or sharp tools to remove marine
growth when cleaning the instrument as this will damage the protective coating and increase the risk
of corrosion.
2.2.3 Handling Procedures for CMOS Devices and Circuit Boards
Complementary Metal Oxide Semi-Conductor (CMOS) devices have diode input protection against
adverse electrical environments such as electrostatic discharge.
Severe electrical transient voltages can be generated during handling.
Static voltages generated by a person walking across a common waxed floor have been measured in
the 4 to 15 kilovolt range. These static high voltages are potentially dangerous when discharged into a
CMOS electronic device, due to the energy stored in the capacity (~300 pF) of the human body at
these voltage levels.
Present CMOS gate protection structures can generally protect against over-voltages. This is usually
sufficient except in the severe cases.
All CMOS devices should be stored and transported in materials that are anti-static. CMOS devices
must not be inserted into conventional plastic “snow”, Styrofoam or plastic trays, but should be left in
their original container until ready for use.
Operators must comply with safety precautions.
Completed assemblies should be placed in anti-static containers before being moved to stations.
All low impedance equipment (pulse generators, etc.) should be connected to CMOS inputs only after
the CMOS is powered up. This type of equipment should be disconnected before power is turned off.
A circuit board containing CMOS devices is an extension of the device and the same handling
precautions apply. Unprotected handling of any board containing edge connectors wired directly to
CMOS device inputs can cause damage.
Do not insert or remove CMOS devices from their original or test sockets with power applied. Check
all power supplies to be used for testing CMOS devices to ensure there are no voltage transients
present.
All CMOS devices should be placed on a grounded bench surface and operators should ground
themselves prior to handling devices, since a person can be statically charged with respect to the
bench surface. Wrist straps in contact with skin are strongly recommended.
Nylon or other static generating materials should not come in contact with CMOS circuits.
When lead straightening or hand soldering is necessary, provide ground straps for the apparatus used
and ensure the soldering irons are grounded.
Section 2 – Safety
4