Olympus EPOCH 600, Basic Operation Manual

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DMTA ‐ 10007 ‐ 01EN [U8778365], Rev. B, June 2010
Basic Operation 35
• Mode : pulse modes available: P/E (pulse ‐ echo), Dual , and Thru (through ‐
transmission)
• Pulser : Pulser waveforms available: Spike or Square (tunable square wave)
• Freq : Pulse frequency (square wave pulse width) ranges from 0.1 MHz to
20.00 MHz
The Spike pulse is equivalent to a 20 ‐ MHz square wave pulse.
2.2.4 Receiver
The EPOCH 600 standard receiver functions are accessible by selecting the Rcvr
menu. Each individual receiver parameter is displayed above the parameter keys, and
can be adjusted by pressing the corresponding [P <n> ] parameter key.
The following receiver parameters are available for live adjustments in the Rcvr
menu:
• Filter : Receiver filter setting
• Rect : Waveform rectification ( Full [fullwave], Half+ [halfwave positive], Half–
[halfwave negative], RF [no rectification])
• Reject : Percent reject (from 0 % to 80 %)
The eight filters available on the EPOCH 600 allow broadband or narrowband
settings to match the requirements of a given application. Each is a fully digital filter
set with the following low ‐ pass and high ‐ pass cutoffs:
• 0.2 MHz–10 MHz
• 2.0 MHz–21.5 MHz
• 8.0 MHz–26.5 MHz
• 0.5 MHz–4.0 MHz
• 0.2 MHz–1.2 MHz
• 1.5 MHz–8.5 MHz
• 5.0 MHz–15 MHz
• DC–10 MHz