User`s manual

Lead Inspection
6-1
6
Chapter 6: Lead Inspection
6-1 Outline
Purpose
Examples
Inspect the condition of IC leads and connector pins based on positional information
obtained from the gray scale search function. (No. of leads or pins that can be detected:
Max. 128 pieces)
Applications
Inspect IC leads or connector pins
Lead
[Lead inspection]
Inspect the layout of the IC leads and connector pins
K0 K1 K2 K3
D1D0
W0
W1 W2 W3
D2
L3 L0 L1 L2
Lead measure-
ment limit line
Reference line
・Inspection procedure
1 Determine the measurement points (K0 to K3) from the mid points of the leads and
the reference line.
2 Calculate the maximum and minimum distances between the leads (D0 to D2) on
the reference line.
3 Calculate the maximum and minimum lead lengths (L0 to L3), starting from the
measurement points (K0 to K3) and measuring toward the lead measurement limit
line.
4 Calculate the maximum and minimum lead widths (W0 to W3) from the measure-
ment points.
- Number of leads K
- D0 to D2: Distance
between leads
- W0 to W3: Lead width
- L0 to L3: Lead length