Table of Contents
Advertisement
6.2 TRANSMITTER UNIT
1. SEN board 01P5744
The SEN board has a PROM(NVRAM) which stores the characteristics of the pressure
sensor. Since the characteristics differ from sensor to sensor, it is not allowed to change
either the SEN board or the pressure sensor only. Both should be replaced in pair.
Note: When the SEN board and pressure sensor are replaced, "0 m adjustment" is
required. Refer to chapter 3.
2. CONTA. board 01P5740
The CONT A board can be used for all three signal transmission frequencies (33kHz,
40kHz, 50kHz) if jumper Jxx3 setting is changed. See page 4-4.
3. CONT. B board 01P5741
The adjustment of potentiometers R5 and R25 and the settings of the dip-switch S1 differ
with the frequency. See page 3-5/4-3.
4. TRS. A board 01P5742 and TRS. B board 01P5743
The TRS. A and TRS. B boards differ with the sounding frequency, i.e., 75 kHz or 175 kHz.
5. TXSD. B board 01P5739
The TXSD. B board can be used for all three signal transmission frequencies.
Note: a jumper setting on the PC board must be put for the CN-24. See page 5-11 and
circuit diagram.
6-2
Advertisement
Table of Contents
