GE USM 36 Series Technical Reference And Operating Manual page 135

Configuring the USM 36 for test tasks
SBA Difference between single measurements
of sound path (gate B - gate A)
SCB Difference between single measurements
of sound path (gate C - gate B)
dBrA Echo height in gate A in dB
dBrB Echo height in gate B in dB
dBrC Echo height in gate C in dB
LA Number of legs in gate A
LB Number of legs in gate B
Only for flaw position calculation:
DA Depth for gate A
DB Depth for gate B
USM 36
PA Projection distance for gate A
PB Projection distance for gate B
RA Reduced projection distance for gate A
RB Reduced projection distance for gate B
Only for DGS:
ERS Equivalent reflector size
Gt DGS test sensitivity
Gr DGS reference gain
(= instrument gain for the
reference echo at 80 % screen height)
CLS Only with JISDAC:
flaw class according to JIS (I, II, III, IV)
Issue 2 (12/2013)
5 Operation
5-59