Service manual

UCW and Ultraview 1700 Monitors — Service Manual
A-4
Interference
The 90385 CRT display may develop a perceptible jitter in the presence of magnetic fields greater
than 1 A/meter. Fields of 10 A/meter are strong enough to distort the edges of the video display.
Magnetic field strengths of 60 A/meter produce a rolling effect that makes the video display
unreadable.
Mitigation
Separate the CRT from the source of the interference. Investigate power lines, adjacent equipment,
and alternative locations. (refer to the following table).
Rated Maximum
Output Power of
Transmitter
(watts)
Separation Distance According to Frequency of Transmitter (meters)
150 kHz to 80 MHz 80 MHz to 800 MHz 800 MHz to 2.5 GHz
0.01 0.02 0.02 0.04
0.1 0.06 0.06 0.1
10.2 0.2 0.4
10 0.6 0.6 1.1
100 1.8 1.8 3.5
Note 1: At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
Note 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected
by absorption and reflection from structures, objects, and people.