Adjusting the Pulser Receiver
Part # 910-250C
37
transducers or changing to a different application. However, the signal to noise ratio may
not be as great as when a narrowband filter is selected.
The following preset filter selections are available in Standard User mode:
• Broadband (0.3 MHz - Bypass)
• 0.3 - 0.8 MHz
• 0.8 - 1.2 MHz
• 0.8 - 3.0 MHz
• 1.7 - 8.5 MHz
• 3.0 - 6.0 MHz
• 6.5 - 8.5 MHz
• 8.0 - 12.0 MHz
• > 8.0 MHz (8.0 MHz - Bypass)
To select the Filter setting, follow these steps:
1. Press [PULSER] multiple times until the filter selection is highlighted, or press [2ND
F], [PULSER] (FILTER) to go directly to the filter selection.
2. Use the function keys for direct access to the preset selection, or use [] and [] keys
to change the selection.
Advanced User Mode
In the Advanced User mode, the filters on the EPOCH 4PLUS are NOT fixed to a limited
number of presets. The EPOCH 4PLUS lets you select both low and high filter frequencies
individually. You can choose eight selections on both low and high frequencies to
maximize ultrasonic performance.
High Pass Filter Setting (HP >) – allows signals ABOVE the selection to pass through:
Low Pass Filter Setting (LP <) – allows signals BELOW the selection to pass through:
• By Pass (Broadband) • 3.0 MHz
• 300 KHz • 6.5 MHz
• 800 KHz • 8.0 MHz
• 1.7 MHz • Custom
• ByPass (Broadband) • 6.0 MHz
• 800 KHz • 8.5 MHz
• 1.2 MHz • 12.0 MHz
• 1.7 MHz • Custom
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