Manual

P O W E R

FILTER

The XLT-17 has four different ﬁ ltering modes.

AL (All Frequencies) – This is the No Filter feature of the XLT-17. No

modiﬁ cations to the audio can be made with the arrow keys. Frequency

range of the All Frequency setting is from 60 Hz to 6 kHz. This mode is often

used to begin to listen for the leak noise.

(The following ﬁ lter modes are often used to pinpoint the location of the

leak noise.)

HI (High Range) – This ﬁ ltering mode allows the user to adjust the

response in the higher areas of the frequency range. Use the arrow keys

to increase or decrease this frequency response range.

LO (Low Range) – Similar to the previous ﬁ lter mode, the lowpass

ﬁ lter allows the user to listen to the lower areas of the frequency range.

The arrow keys are used to increase or decrease this frequency response

range.

FC (Frequency Choice) – This ﬁ lter could also be called Frequency

Select. This mode allows tuning to the frequency that gives the user the

best audio response to the leak noise. The arrow keys are used to move

the cursor, selecting a narrow frequency band of choice.

CONTROL PANEL

XLT-17 MANUAL-8700725 CS2.indd 6 11/6/06 4:02:49 PM

CONTROL PANEL

POWER

This keypad turns the XLT-17 on or off. When the instrument is turned off,

all settings are stored in memory and retained for the next time the XLT-

17 is turned on.

VOLUME ARROW KEYPADS

Press Volume arrow keypad, to modify the volume and sensitivity of the

XLT-17. The arrow keys (up arrow/down arrow) increase or decrease the

audio signal to the headphones. Use the headphone volume knob to

reduce audio as desired.

MUTE

As the name applies, muting disengages the sound to the user. There is

also a control on all listening microphones. This keypad should be pressed

when the sensor is moved to prevent excessive noise to your ears.

FREQUENCY ARROW KEYPADS

These keypads allow the frequency range of the XLT-17 audio ﬁ lters to

be modiﬁ ed.