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Phased array imaging package, With advanced conventional ultrasound, Combined a-scan and s-scan views – Atec Panametrics-Olympus-Epoch-1000i User Manual

Page 6: Calibration across all focal laws

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Phased Array Imaging Package

with Advanced Conventional Ultrasound

The EPOCH

®

1000i provides powerful conven‑

tional ultrasonic and phased array flaw detection
in a portable, rugged instrument. This instrument
offers increased probability of detection of flaws,
better visualization of areas of interest, and im‑
proves inspection efficiency by enabling a single
setup to view A‑scans at multiple angles (focal
laws), thus eliminating the need for multiple
probes and wedges. This instrument provides
the same reliable and exceptional performance
for conventional detection as the EPOCH 1000,
with the added benefit of phased array capabili‑
ties. The EPOCH 1000i allows you to perform
code‑compliant inspections in accordance with
conventional standards, with the advantage of
phased array for increased accuracy and ef‑
ficiency.
Available with a standard 16:16 configura‑
tion and upgradable to 16:64 configuration via
software, the EPOCH 1000i also includes many
sizing features to facilitate in flaw inspections.
The instrument comes standard with A‑scan and
S‑scan reference and sizing cursors for flaw‑size
evaluation.

Epoch 1000i Phased Array Specifications

Focal Laws

61

Maximum Elements

64 elements

Maximum Active Aperture

16 elements

Video Filtering

Off, Low, High

Display Modes

A‑scan, S‑scan, Linear scan, C‑scan, A‑scan plus image

Image Update Rate

60 Hz update for all A‑scans; 20 Hz update for all images

Combined A-scan and S-scan Views

The EPOCH 1000i features a standard combined A‑scan and
S‑scan view that displays A‑scan data from every angle between
two user‑defined start and end values. Each individual angle, col‑
lectively referred to as focal laws, can be selected to display a live
A‑scan enabling you to detect and characterize potential defects
at multiple angles simultaneously using phased array imaging.

Calibration Across All Focal Laws

When calibrating for gain and zero offset in phased array mode,
the EPOCH 1000i utilizes single‑step procedures to calibrate
across all focal laws. These automated calibration procedures
allow you to capture peak amplitude or TOF/distance measure‑
ments from a single reflector across all the imaging angles (focal
laws). The instrument then uses the captured amplitude or TOF/
distance data to adjust the gain and zero offset at each focal law
so that calibrated measurements are provided for every A‑scan.

Gain Calibration Curve