Instruction manual

Part 4: Detailed Operating Procedures
Turning on Power
This part presumes that the Equipment Setup section was followed so that the
Detector, Gate, and Counter are assembled correctly, and that all cables are
connected and power is provided.
Turn on the Gate using the Power Switch on the Gate Electronics Box. Turn on
the Detector using the Power switch on the Front Panel. Toggle the Direction
Switch on the Gate Electronics Box a few times to initialize the Gate electronics.
Verify that the gate latch mechanism is working properly, and leave the Direction
Switch set to the desired direction. The unlatched door should be on the side to
which untagged fish are to be diverted.
For a detector without a gate, stand-alone mode, turn on the Detector using the
Power switch on the Front Panel. Power is provided from the c-cells or from a
battery or power supply connected to the Power Connector on the rear of the
detector
.
If available, turn on water and establish a flow of water through the detector so
that most of the tunnel’s bottom surface is wet. This will minimize friction and
maximize fish through-put.
Adjusting Detector Sensitivity
Detector Sensitivity adjustment is assessed by watching which LEDs are lit in the
bar graph.
The left most LED in the bar graph indicates that power is on. It does not change
with signal strength or adjustment. With the Detector Sensitivity adjustment
turned up to about 11:00 o'clock, the second, third and sometimes fourth LED
bounce back and forth, indicating random electronics noise. When a tag goes
through the Detector, noise plus signal strength is displayed, lighting LEDs well
to the right of the Tag Threshold mark.
In normal, magnetically quiet environments, the operator should adjust the
Detector Sensitivity so that in addition to the left most LED being lit (the Power
On indication), one of the next three LEDs is also lit. The second and third LEDs
R-Series Instruction Manual 30