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3.2.2 Function introduction
Frequency rate key
: this key is the point dynamic soft switch; The frequency
of the receiving signal can be changed at one time, and the selection of multiple
frequency cycles is selected by the user. The default selection is 9 frequencies: 50Hz,
60Hz, LF, SSLOW, SSHIGH, 577Hz, 8KHz, 33KHz, 82KHz, 133KHz, and initial
577Hz.
Mode key
: this key is the point dynamic soft switch; Each time a signal can be
changed, it is selected by narrow peak, width peak, trough, width peak arrow, crest
and trough.
Gain key:
this key is a two point moving soft switch. The arrow upward
indicates that the gain can be increased, and the arrow down indicates that the gain
can be reduced. When the signal is less than 10.0, press to increase gain time, signal
strength can be adjust to 60.0 or so, when the signal is greater than 88.0, press reduce
gain time, signal strength can be adjust to 60.0 or so, when the signal strength
between 10.0 to 88.0, press an increase/decrease, a dB gain increase/decrease.
External mode switch key
: in the external mode, press this key to switch fault
location mode and recognition mode.
Menu key
: press this button to adjust the brightness of LCD backlight, which
can be divided into 5 files and can be adjusted by circulation.
Sound volume key
: this key is the point action soft switch, each time can
change the sound of the buzzer, from the high loudness, medium loudness, low
loudness, the closure of the buzzer cycle selection. Turn on the buzzer to turn off the