Textron Greenlee Communications 500XP Manual De Usario página 8

Operation
Power On
Press and hold the button until you hear the power-on beep
and see the red LED light; release the button. Then you will
hear the self-test tone for one second during which time the
green LED should be lit.
Change Gain
Short presses on the + or – buttons will increase or decrease
the gain in single steps. At each step, a tone is produced at a
level slightly different to the previous one. At maximum gain
a high pitched beep is generated, and at minimum gain a low
pitched beep is generated.
High Gain and Feedback
The 500XP allows you to increase the gain to the maximum
level possible with the available circuitry to give you the best
chance of finding elusive signals. With high gain comes a risk
of feedback.
At high gains, to reduce the risk of feedback:
• Avoid touching the tip.
• Use the optional headset.
• Avoid static charge near the tip. Dissipate charge by wiping
with your hand (not gloved).
• Avoid covering the speaker with your hand.
Avoid condensation and dirt on the probe, which can also form
a short circuit.
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