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ONLINE ELECTRONICS LTD
3. 3002RS OPERATION
3.1. CONTROLS
The 22Hz BARGRAPH shows the instantaneous signal level of the received 22Hz signal
where no segments indicates minimum signal (0%) and 16 segments indicates maximum
signal (100%). Note that if the received signal frequency is not 22Hz it may be heard
through the headphones but not displayed by the 22Hz bargraph.
The 22Hz ASTERISK appears whenever a 22Hz signal is being received. Note that if the
received signal frequency is not 22Hz it may be heard through the headphones but not
cause the 22Hz asterisk to appear.
The 22Hz LED illuminates whenever a 22Hz signal is being received as per the 22Hz
asterisk.
The 22Hz EVENT COUNTER increments if a 22Hz signal is received continuously for 3
seconds. It will only function reliably with transmitters configured for continuous operation.
If there is excessive background noise or the antenna is moved excessively it is not
uncommon for the 22Hz EVENT COUNTER to increment.
The SENSITIVITY & ON/OFF control is used to turn the unit ON and OFF and adjust
sensitivity. To turn the unit ON / increase sensitivity, turn the knob clockwise. To turn the
unit OFF / decrease sensitivity, turn the knob anti-clockwise. There should be a noticeable
'click' when the unit turns ON or OFF.
The DISPLAY BACKLIGHT button turns on the display backlight for approximately 5
seconds.
The BATTERY TEST / RESET button resets the 22Hz EVENT COUNTER and gives an
indication of the battery lifetime remaining using the display bargraph.
The ANTENNA BNC CONNECTOR is used to connect the EM antenna to the unit.
The HEADPHONE CONNECTOR is used to connect headphones to the unit.
The MODE SWITCH is used to configure the unit for use with an EM antenna (ANT position)
or for use with an RS232 ROV system (RS232 position).
The DATA CONNECTOR is used to connect the unit to an RS232 ROV system.
3002RS_5002_A01
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