1、 Dimensions: Unit: mm

2、 Interface

This screen adopts two interface methods, one is the 485 serial port method and the other is the current loop method. During operation, only one method can be used to connect with the instrument. The interface uses a DB9 female socket or an aviation plug for output.

(1) When using 485 communication method, pin 2 of DB9 is A, and pin 5 of DB9 is B.

(2) When using the current loop connection method, the 2nd pin of DB9 is OUT+and the 5th pin of DB9 is OUT -.

(3) Data format: 10 bits, including one start bit, 8 data bits, and 1 stop bit.

(4) This large screen can only receive signals with a baud rate of 4800 (1200 when receiving 3190). Due to the adjustable baud rate of most instruments, the baud rate of the instrument should be changed to 4800 when connected to this product.

3、 Types of compatible instruments

（1）XK3168 (2)HT9800 (3)XK3190(4)XK3110 （5）XK3102 (6)DS822 (7)XK3192A (8)XK3192B

This large screen utilizes the different states of internal short-circuit blocks to adapt to different models of instruments. After the self-test is completed, if there is no signal, the instruments that can be connected in that state will be automatically displayed based on the different states of the short-circuit block.

Before use, please make sure to confirm that the A pin of the 485 communication of the instrument is connected to the A pin of the large screen, the B pin of the instrument is connected to the B pin of the large screen, or the OUT+of the instrument is connected to the OUT+of the large screen, and the OUT - of the instrument is connected to the OUT - of the large screen. Please refer to the table below for details:

Note: Except for 3190 (factory set to 1200), all other models of instruments should have their baud rate changed to 4800. When using current loop communication for communication, short-circuit block 9 is ON and 10 is OFF; When using serial communication, short-circuit block 9 is OFF and 10 is ON.