HEIDENHAIN TNC 407 (243 020) Technical Manual - Manual (Page 43)

01.98
TNC 407/TNC 415/TNC 425 2 Assembly hints 3-13
2.5.2 Visual display unit (VDU)
When mounting the VDU it must be remembered that this unit is very sensitive to magnetic pick-up.
The picture position and geometry can be disturbed by stray magnetic fields. Alternating fields cause
periodic movement or distortion of the picture.
For this reason, keep a minimum distance of 0.5 m between the VDU casing and the source of any
disturbance (e.g. permanent magnets, motors, transformers etc.)
*
°
C
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* *
*
*
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C
*
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400
25
15
25
330
25
20
110 75
415
60
25
60
25
40
°
C
*
Measuring point for
ambient temperature
Free space for air circulation
2.6 Degree of protection
When mounted, the visual display unit and the keyboard unit provide class IP54 protection against
dust and splashwater.