Description Of Working; Transducer Ut-200Nd20; Matching Box Aw-154F; Recorder Jfe-582 - JRC JFE-582 Service Manual

Description of working

1.TRANSDUCER UT−200ND20
1-1.The signal from CML-596-2 TX/RX UNIT is converted into supersonic signal by
TRANSDUCER and transmitted to underwater.
1-2. The signal that is sea bottom echo is received, and converted into electronic signal
for CML-596-2 TX/RX UNIT.
1-3. Inside the transducer consists of element like condenser, and insulation resistance
of its core cable is infinity. (∞)

2.MATCHING BOX AW-154F

2-1. This box included matching transformer is installed between JFE-582
(RECORDER) and TRANSDUCER to match cable loss.

3.RECORDER JFE-582

3-1. CML-596-2 TX/RX UNIT
3-1-1. TX/RX signal control
Received signals are divided into the paper-recording signal and the digital
depth indicator signal.
＊Received signal for Digital depth indicator is set and controlled by software, so it is
unable to operate GAIN and STC on the LCD menu.
3-1-2. Carry out the control of NMEA, TX TRIG, and ALARM signal to I/O UNIT
CQD-1705.
3-1-3. +12V source from CBD-1488 Power Unit is converted into +5V and –12V.
3-2. CQD-1705 I/O UNIT
3-2-1. Each signal of NMEA (POSITION), DEPTH ACK, and POWER FAIL ACK from
External equipment is received by Photo coupler, and output it to CML-596-2
TX/RX UNIT.
3-2-2. Each signal of NMEA (DEPTH), TX TRIG, and DEPTH (ALARM) from
CML-596-2 TX/RX Unit is output to External equipment.
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