1OM-1505-004_w.pdf - 第180页
1OM-1505 5. Measured Noise V alue : Chap.5 5-29 1 103-002 5. Measured Noise V alue [Measurement Condition] • Measuring Position Position 1 m away and 1.6 m in height from the machine (Both Front and Rear Sides of Machine…
1OM-1505
4. Fiducial Marks : Chap.5
5-28
(3) Material
Copper Leaf, Nickel Plating, Solder-Plating, Solder Leveler, Gold Plating
Note
(a) A copper leaf, a resist, a coating, a silk print, and a punched hole
should not exist in the range of 1.0 mm in both X and Y directions
from the outermost edges of a ducial mark. They may cause a false
recognition.
Example :
(Front Side of Machine)
Unit : mm
F1E11
(b) The shape of PCB (a cutout, a punched hole), the external elements
(light reflected from a structure, light emitted from an external device,
etc.) may sometimes interfere with recognition of ducial marks.
(c) A ducial mark should make ample contrast with the surroundings.
(To prevent false recognition)
(d) Anything resembling a pattern similar to a ducial mark should
not exist in the designated window. If one exists, it may cause false
recognition.
(e) A test may be required when the ducial mark cannot be recognized
because of the extreme warpage of the PCB.
1103-003
1OM-1505
5. Measured Noise Value : Chap.5
5-291103-002
5. Measured Noise Value
[Measurement Condition]
•
Measuring Position
Position 1 m away and 1.6 m in height from the machine (Both Front and Rear
Sides of Machine)
•
Noise Measuring Instrument
RION Model : NA-60
Results of Measurement:
Max. 68.0 [dB] (Measuring Point b) Background Noise:
40.0 [dB]
Requirements for
Machine Operation
Measured Noise Value [db]
Remarks
Normal Operation
Measuring Point a
67.2 [dB]
•
Temperature 25.5°C
Measuring Point b
65.0 [dB]
Measuring Point c
68.0 [dB]
Measuring Point d
65.8 [dB]
T1E9
1OM-1505
5. Measured Noise Value : Chap.5
5-301103-001