Olympus OmniScan MX2, User Manual

Page: 207 / 228

DMTA-20015-01EN [U8778402], Rev. J, January 2014
OMNI-M2-UT-2C Module Specifications 195
O.1 Acoustic Specifications
This section details the acoustic specifications of the pulser, receiver, and beam
formation (see Table 74 on page 195).
When used in pulse-echo mode, pulses occur on both the
P
1 and
R
1 connectors. When
pulse-echo mode is selected, Olympus recommends using only one probe on the
P
1
connector.
Table 74 Acoustic specifications
Pulser
Voltage 95 V, 175 V, and 340 V
UT channel quantity 2
Pulse-echo mode Pulser 1 to pulser 1
Pulser 2 to pulser 2
Pitch-and-catch mode Pulser 1 to receiver 1
Pulser 2 to receiver 2
Pulse width Adjustable from 30 ns to 1000 ns; resolution
of 2.5 ns
Fall time <10 ns
Pulse shape Negative square pulse
Output impedance <30
Ω
Receiver
Gain range 0 dB to 120 dB maximum input signal
34.5 Vp-p (full-screen height)
Input impedance
64
Ω
in pulse-echo mode
51
Ω in pulse-receive mode
System bandwidth 0.26 MHz to 27 MHz (–3 dB)