TTControl Vision 307 - RS-232 Interface; Pinout; Functional Description; Maximum Ratings

6. SPECIFICATION OF INPUTS AND OUTPUTS
Note 2 A USB high speed (HS) connection is more sensitive than a USB full speed (FS) or low
speed (LS) connection. Hence, the maximum possible cable length also depends on
the kind of peripheral connected to the USB interface.
Note 3 For High Speed USB.
Note 4 For Low Speed USB and Full Speed USB.
6.9 RS-232 interface
6.9.1 Pinout
Connector Pin no. Function
C1 25 RS-232 TX – serial interface output
C1 34 RS-232 RX – serial interface input
C1 33 RS-232 GND – serial interface ground signal
6.9.2 Functional description
The RS-232 interface is a RS-232 compatible asynchronous full duplex serial interface. No handshake lines
(like RTS or CTS) are provided.
Note that a proper ground connection is necessary for the RS-232 operation. It is recommended to use the
RS-232 GND pin for this purpose. When connecting with an external device (for example, a PC with RS-232
interface) make sure that the maximum voltage ratings are not violated.
Figure 7: RS-232 interface wiring
6.9.3 Maximum ratings
Symbol Parameter Min Max Unit
V
RS-232_TxD
,
V
RS-232_RxD
Bus voltage under overload conditions (that is, short circuit to
supply voltages)
-15 33 V
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Proprietary Information
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Document Number:
D-156-G-02-003