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AUDIO ADJUST - The Diver Mag 1 has both a LED readout and a Audio output (underwater earphones).
When a target is detected the frequency of the audio shifts up or down in conjunction with LED readout. The
audio adjustment control allows the operator to adjust the frequency (when no target is detected) to a
comfortable frequency level. The frequency should not be adjusted to low because the gamma reading will
most likely shift lower when a target is detected. If the Zero Adjust knob will not allow full frequency range
adjustment (zero to very high frequency), then turn the knob fully counter clockwise. This causes the micro
processor to re-center the frequency. After making this adjustment the knob is generally set at mid-range (12
o’clock) position. During READ TIME the audio is turned off.
If a problem occurs with the signal from the sensor the audio will pulsate on and off.
If a water leak occurs in the electronics housing the audio will “wobble”.
READOUT - A five-digit LED READOUT which displays the gamma count. When the magnetic field changes
the frequency of the pulses (number of) will change and the READOUT will change. This change can only
occur after the one quarter second READ TIME. The readout flashes blank during the one quarter second
READ time. The new count is displayed after READ TIME. If a problem occurs with the signal from the
sensor the readout will display five dashes (-----) and will retry by cycling again.
LOW BATTERY - The LOW BATTERY LED will illuminate when the battery voltage drops below a factory set
voltage reference. A low battery indication begins by the LED blinking on during polarization time. Once this
occurs the system will operate for another 15 minutes. The READOUT will start to “jump around” when the
battery is low. If a charged external battery is connected, the LED will go out and normal operation will
resume. When the external battery runs low, the LED will come back on.
LEAK - The LEAK LED will illuminate if water enters the electronics housing. A leak will also cause the audio
output to “wobble”.
EARPHONE JACK - The underwater earphone, or optional land earphone, connects to this output jack. The
design does not require the connection to be waterproof. When the earphone is not attached a cap is not
needed.
FACEPLATE KNOB - In the center of the Control Panel faceplate is a Knob that is used when removing the
Control Panel faceplate from the electronics housing. The Control Panel is removed to gain access to the
tuning switch.
BATTERY CHARGER / EXTERNAL BATTERY JACK - Located at the rear of the electronics housing is a
jack that is used to charge the internal 12 volt battery. This same jack is used to connect the optional external
battery pack. When not in use, this jack must be capped with the waterproof cap provided.
VENT BOLT - Located at the rear of the electronics housing is an o-ring sealed bolt. This bolt is removed
prior to removing the control panel ( prevents a vacuum buildup).
DIVER MAG 1
ELECTRONICS COMPARTMENT - REAR VIEW
VENT BOLT
BATTERY CHARGER/
EXTERNAL BATTERY JACK
