TASCAM CD-01U/CD-01U PRO RS-232C Protocol Specifications
2TEAC Corporation
1. OverviewThe CD-01U/CD-01U PRO (here referred to as “controlled device”) functions can be controlled using a
serial RS-232C connection from an external device, such as a computer. Such a device is referred to
here as the “external controller”.
2. Specifications2.1. Electrical Specifications
Conforms to standard JIS X-5101 (equivalent to former JIS-C-6361 and EIA RS-232C
standards) Note that this is not compatible with the RS-422 used
in professional VTR units.
Impedance at receiver When measured with an applied voltage of between +/-3 V and
+/-15 V, the DC resistance is between 3 kohm and 7 kohm.
Total load capacitance of < 2500 pF
Open circuit voltage at transmitter < 25V
Open circuit voltage at receiver < 2V
Signal voltage When the open circuit voltage at the receiver is 0 V, the signal
voltage is between +/-5 V and +/-15 V against a load impedance
of between 3 kohm and 7 kohm.
Signal discrimination Logical “1” = < -3V
Logical “0” = > +3V
2.2. Communication format
Circuit type 3-wire, Half-duplex
Transmission type Digital binary serial
Data speed (baud rate) 9600/19200/38400 bit/sec
Word length 8-bit
Parity bit None
Stop bit 1 bit
(* Word length, parity bit, and stop bit of CD-01U are fixed.)
2.3. Connector pin-out
Connector D-sub 9pin female (Inch screw thread)
Terminal pin-out and input/output signals
Pin No. In/Out Signal name Description
1-NC Not connected
2In Rx Data Data received at this pin *1
3Out Tx Data Data transmitted from this pin
4-(Reserved) Reserved
5-GND Signal ground pin
6-(Reserved) Reserved
7-(Reserved) Reserved
8-(Reserved) Reserved
9-NC Not connected
*1: Impress voltage complied with RS-232C standard to Rx Data.
*2: CD-01U doesn’t have RTS/CTS terminals for loop-back in this connector. Make sure the
specifications of external controller and if necessary, please have the loop-back circuit outside of
the CD-01U.