8-F-50: Safety
8-50F1:
Choose the most correct statement with respect to component damage from electrostatic discharge:
ESD damage may cause immediate circuit failures, but may also cause failures much later at times when the RADAR set is critically needed.
ESD damage occurs primarily in passive components which are easily identified and replaced.
ESD damage occurs primarily in active components which are easily identified and replaced.
The technician will feel a small static shock and recognize that ESD damage has occurred to the circuit.
8-50F2:
Before testing a RADAR transmitter, it would be a good idea to:
Make sure there are no explosives or flammable cargo being loaded.
Make sure no one is on the deck.
Make sure the magnetron’s magnetic field is far away from the magnetron.
Make sure the Coast Guard has been notified.
8-50F3:
While making repairs or adjustments to RADAR units:
Discharge all high-voltage capacitors to ground.
Wear fire-retardant clothing.
Maintain the filament voltage.
Reduce the magnetron voltage.
8-50F4:
While removing a CRT from its operating casing, it is a good idea to:
Wear gloves and goggles.
Discharge the first anode.
Test the second anode with your fingertip.
Set it down on a hard surface.
8-50F5:
If a CRT is dropped:
It might implode, causing damage to workers and equipment.
Most likely nothing will happen because they are built with durability in mind.
It might go out of calibration.
The phosphor might break loose.
8-50F6:
Prior to removing, servicing or making measurements on any solid state circuit boards from the RADAR set, the operator should ensure that:
The proper work surfaces and ESD grounding straps are in place to prevent damage to the boards from electrostatic discharge.
The waveguide is detached from the antenna to prevent radiation.
The magnetic field is present to prevent over-current damage or overheating from occurring in the magnetron.
Only non-conductive tools and devices are used.
|
Color key:
|
|
● = Unseen
|
|
● = Weak
|
|
● = Review
|
|
● = Learned
|
|
● = Incorrect answer
|
