JVC DLA-HD250PRO Instruction Manual - Page 50

6 Others RS-232C Interface Control of this unit via a computer is possible by connecting the computer to this unit with a RS-232C cross cable (D-Sub 9 pin). RS-232C Specifications This unit Pin No.   2   3 5 1,4,6 - 9 ● PC refers to the controller such as a personal computer. Signal RxD TxD GND N/C Mode Character Length Parity Start Bit Stop Bit Data rate Data format Non-synchronous 8 bit None 1 1 19200 bps Binary Function Receive data Transmit data Signal ground - Signal Direction PC→This unit This unit→PC - D0 D1 D2 D3 D4 D5 D6 D7 Start Bit Stop Bit Command Format The command between this unit and the computer consists of "Header", "Unit ID", "Command", "Data" and "End". ● Header (1 byte), Unit ID (2 bytes), Command (2 bytes), Data (n bytes), End (1 byte) ■ Header This binary code indicates the start of communication. Binary code Type 21 Operating command 3F Reference command 40 Response command 06 ACK Description PC→This unit PC→This unit This unit→PC This unit→PC (When the command is accepted without error, it returns to PC) ■ Unit ID This code specifies the unit. The binary code is fixed at "8901". 50