26 TASCAM HD-R16–RS-232C Serial InterfaceThe HD-R1 is equipped with a 9-pin RS-232C port,capable of receiving commands and sending statusinformation. The commands cover all transportfunctions and a majority of settings. A documentdetailing the HD-R1’s serial control protocol can bedownloaded from TASCAM’s web site.Connector: 9-pin D-sub (female)Mode: AsynchronousData rate: 9600 bpsCharacter length: 8 bitsParity bit: noneStop bit: 1 bitTransmission order: Least significant bit first9-pin D-sub Connector PinoutSerial interface specificationsPin# Signal Description1 Unused Unconnected within the HD-R12 Receive Serial data into the HD-R13 Transmit Serial data out of the HD-R14 Unused Unconnected within the HD-R15 Ground Connected to the digital ground plane within the HD-R16 Unused Unconnected within the HD-R17 Unused Unconnected within the HD-R18 Unused Unconnected within the HD-R19 Unused Unconnected within the HD-R1