Table 20 Gate Specifications; Table 21 Measurement Specifications - Olympus EPOCH 650 User Manual

DMTA-10055-01EN, Rev. A, February 2015
Parameter
Range
Velocity
Zero Offset
Display Delay
Refracted Angle
Parameter
Measurement gates
Gate start
Gate width
Gate height
Alarms
Parameter
Measurement display locations
Gate 1
Gate 2
Echo-to-Echo
Other Measurements
DAC/TCG
DAC Points
Special DAC Modes
Curved Surface Correction
304 Chapter 13
Table 19 Calibration specifications (continued)
6.67 mm to 26,628 mm (0.262 in. to 1054.3 in.)
635 m/s to 15240 m/s (0.0250 in./µsec to 0.6000 in/µsec)
0 µsec to 750 µsec
–65.02 mm to 5,080.75 mm (–560 in. to 200.3 in.)
0° to 90° in 0.1° increments

Table 20 Gate specifications

2 fully independent gates for amplitude and TOF
measurements
Variable over entire displayed range
Variable from gate start to end of displayed range
Variable from 2 % to 95 % full screen height
Positive and negative threshold, minimum depth (gate 1
and gate 2)

Table 21 Measurement specifications

5 locations available (manual or auto selection)
Thickness, sound path, projection, depth, amplitude,
time-of-flight, min/max depth, min/max amplitude
Same as Gate 1
Standard Gate2—Gate1
Overshoot (dB) value for DGS/AVG, ERS (equivalent
reflector size) for DGS/AVG, AWS D1.1/D1.5 A, B, C and
D values, reject value, Echo to Ref dB values
Standard
Up to 50 points, 110 dB dynamic range
20–80 % DAC, custom DAC (up to 6 curves)
Standard OD or bar correction for angle beam
measurements
Value
Value
Value