| 摘要 |
PURPOSE:To ensure a simple and economical arrangement of the data, by securing the recording of the temperature-depth curve independently or in overlap with the fish data via the recorder of the fish detector. CONSTITUTION:Comparator 3 in the device compares DC voltage E showing the temperature data with output C of saw-tooth wave generating circuit 2 to deliver output pulse f when the coincidence is obtained for the mutual voltage. Comparator 6 compares DC voltage E' showing the depth data with output C of saw-tooth wave generating circuit 5 to deliver output pulse (f) when the coincidence is obtained for the mutual voltage. The output pulse (f) of comparators 3 and 6 each is recorded in the form of a spot on the recording paper of fish detector 7. Then both the temperature and depth data can be recorded on the recording paper by detaching the wave transmitter/receiver of detector 7. Furthermore, the fish data can also be recorded onto the recording paper in overlap with the temperature and depth data if the transmitter/receiver is not datached. In such constitution, the special recorder can be eliminated to enhance the economical performance, at the same time simplify the arrangement of the data. |
