GE Ultrasonic USM Go Operator's Manual page 172

Appendix C. EN 12668 Specifications
Paragraph Parameter
9.4.2 Pulse Reverberation
8.4.2 Crosstalk Pulser to Receiver
8.4.3 Dead Time After Transmitter Pulse
8.4.4 Dynamic Range
8.4.5 Receiver Input Impedance
8.4.6 Distance Amplitude Correction
154
Table 2: EN 12668-1:2000 Specifications (cont.)
LSL Typ.
0
0
0
80 80
100 100
950
0
40
1.03
0
-1.5 0
USL Units Test Conditions
4 nSec Damping =50, Voltage = High, Energy = High, RepRate =2000
4 nSec Damping =1000, Voltage = High, Energy = High, RepRate =15
4 nSec Damping =1000, Voltage = High, Energy = High, RepRate =2000
- dB
10 uSec Measured in worst case frequency setting
- dB Measured in worst case frequency setting
Ohm Real Impedance at 4MHz
0.1 (R - R
max gain min gain
Ohm Imaginary Impedance at 4MHz
nF Input Capacitance
0.15 (C - C
max gain min gain
1.5 dB Maximum error between TCG curve and actual TCG correction
)/R
max gain
)/C
max gain
USM Go Operator's Manual