Adjusting the Pulser Receiver
Part # 910-250C
33
Note:
You can use AUTO-80% when an echo exceeds the desired amplitude. The
echo can be either above or below 80% full screen height. If a signal is above
80% screen height, the EPOCH 4PLUS reduces gain in a series of repetitions
until the signal peaks at 80%. Occasionally, for very high amplitudes (above
500% full screen height), you may need to press the [F5] key a second time.
4.3
Setting a Gain Reference Level and Adding
Scanning Gain
To establish the current system gain as the reference (base) level, press [2nd F], [GAIN]
(REF). This is useful for inspections that require you to establish a reference gain level,
then add or subtract additional scanning gain.
After accessing the reference function, the gain display will read: REF XX.X dB + 0.0.
You can now add scanning gain independent of the reference gain level.
To add scanning gain, follow these steps:
1. Press [F2] to make adjustments in 6 dB increments. The cursor position is to the left of
the decimal point.
2. Use the [ ] and [ ] keys to increment or decrement.
3. Press [F1] to make adjustments in 0.1 dB increments. The cursor position is to the
right of the decimal point.
4. Use the [ ] and [ ] keys to increment or decrement.
5. Use the [ ] and [ ] keys to increment and decrement the scanning gain.
Tip:
Pressing [GAIN] multiple times is another method to toggle back and forth
between the 6 dB and 0.1 dB increments.
You can add the scanning gain to the reference level, toggle between the active scanning
gain and 0 dB (this is the scan dB feature), or turn scanning gain off by pressing the
following keys:
[F3]:
Adds the reference gain and scanning gain together, and exits the Reference
Level function.
[F4]:
Scan dB - Toggles the scanning gain back and forth from the active scanning
gain and 0 dB.
[F5]:
Exits the Reference Level function without adding the entered scanning gain.
Prompts are displayed in the function boxes at the bottom of the screen. If another
parameter is accessed, these prompts may change, but can be brought up again by pressing
[2nd F], [GAIN] (REF).
Summary of Contents for Panametrics Epoch 4 Plus
Page 4: ...EPOCH 4PLUS...
Page 10: ...EPOCH 4Plus...
Page 18: ...8 EPOCH 4PLUS...
Page 40: ...30 EPOCH 4PLUS...
Page 50: ...40 EPOCH 4PLUS...
Page 54: ...44 EPOCH 4PLUS...
Page 92: ...82 EPOCH 4PLUS...
Page 172: ...162 EPOCH 4PLUS...
