| 摘要 |
PURPOSE:To display the signal depending on color with level difference, by suitably distincting the signal level through the display of signal into a plurality of colors corresponding to the level. CONSTITUTION:When the oscillation keying is incoming at the terminal P, the shift circuit 1 is operated and the saw tooth wave circuit 2 is started from the end to produce saw tooth waves for the time T. The signal incoming to the terminal Q includes the oscillation echo produced accompanied with the delivery of ultrasonic waves and the reflection signal of fishes and sea bottom, and they are compared with the voltage set in advance at the voltage comparison circuit group 10 through the detection circuit 9. When a plurality of voltage comparison circuits are provided and the comparison level is suitably set from small to greater, the outputs are fed to the combination circuit 11, and the output is fed to the color matrix circuit 12. The output of the circuit 2 drives the vertical deflection circuit 3, the output is fed to the vertical deflection axis, the sigal incoming to the terminal Q is fed to the CRT7 through the delay circuit 4 and the amplifier 5 and horizontal deflection circuit 6 to horizontally deflect CRT. |
