Push-Button - Whites TM 808 Instruction Manual

Description of Controls continued.....
PUSH BUTTON
The PUSH BUTTON is located on the tip of the carrying handle. It is
used in the NO-AUTO position to reset the threshold hum when it drifts up or
down. It does the job manually, that the AUTO position does automatically. Also
used during pinpointing, when the PUSH BUTTON is pressed and released with
the detector over a target, the signal will be reduced in intensity and magnitude
aiding in locating the targets center. As will be described later, the PUSH BUT-
TON is also used to reset the threshold during GROUND REJECT tuning. When
pressing and releasing the PUSH BUTTON, do so slowly. Depress, hold for a
second, and then release for the best results.
The speaker is automatically turned off when headphones are plugged
in. Maximum detection depth and longest battery life are achieved through the
use of headphones. Most 1/4 standard 8-100 ohm headphones will function
correctly with this model. This is a stereo jack thus stereo headphones, or those
with a stereo switch, are necessary in order to hear the signal in both ear cups.
HEADPHONE
AUDIOFONO
(11)