Olympus EPOCH 650, User Manual

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DMTA-10055-01EN, Rev. A, February 2015
Chapter 3 56
Figure 3-8 The reference and scanning gains
3.9.3 Pulser
The EPOCH 650 main pulser functions are accessible by choosing the Pulser menu.
Each individual pulser parameter is displayed above the parameter keys, and can be
adjusted by pressing the corresponding parameter key.
The following pulser functions are available for live adjustment in the Pulser menu:
• PRF Mode : Selects either Auto or Manual PRF (Pulse Repetition Frequency)
adjustment mode. Auto changes the PRF setting based on the screen range, and
Manual allows manual adjustment of PRF in 10 Hz increments.
• PRF : Pulse Repetition Frequency values range: from 10 Hz to 2000 Hz in 10 Hz
increments
• Energy : Pulse voltage values available: 0 V, 100 V, 200 V, 300 V, or 400 V
• Damp : Pulse damping values available: 50 Ω , 100 Ω , 200 Ω , or 400 Ω
• 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.
3.9.4 Receiver
The EPOCH 650 standard receiver functions are accessible by choosing the Rcvr
menu. Each individual receiver parameter is displayed above the parameter keys, and
can be adjusted by pressing the corresponding parameter key.
Scanning gain Reference gain