JRC JMA-3300 Series Installation Manual page 56

Chapter 3 INSTALLATION OF THE DISPLAY UNIT
3.8 CONNECTING TO THE GYRO AND ELECTROMAGNETIC LOG (NSK UNIT SETTING)
 Baud Rate Setting
When setting the gyro in "● Heading Equipment Setting", the setting of the baud rate is
not required.
 Connecting to External Buzzers
When connecting an external buzzer to the NSK unit, read the following guideline.
TB40 of the built-in PCB CSC-631 has a dry contact output, so that if the connection
"TB40 → Power Supply → Positive terminal of the buzzer → Negative terminal of the
buzzer → Power supply ground" is made, then a buzzer can be sounded when there is an
alarm from the JMA-3300.
Refer to "3.11 CONNECTING CONTACT SIGNALS TO EXTERNAL
BUZZERS/EXTERNAL DEVICES" for connection of external buzzers, and set
"3.11 CONNECTING CONTACT SIGNALS TO EXTERNAL BUZZERS/EXTERNAL
DEVICES" - "■ Jumper setting".
Example of connection
Note:
 The maximum contact capacity is:
10A/250VAC
10A/30VDC
Make sure that this capacity is not exceeded.
3-26
CSC-631
Battery, etc.
Buzzer