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TSC-9902 User Guide (v5.0) Hardware Overview • 13
RS-422 Connection
The TSC-9902 provides a single RS-422 connector for serial communication. ( Figure 3.6 )
Figure 3.6 TSC-9902 (Top) — RS-422
The RS-422 OUT port is a DB9 female connector supporting a Baud Rate of 38400, 1 start bit, 1 stop bit, and no
parity.
Table 8.2 on page 25 lists the pinouts for the RS-422 port.
SERIAL Tx Status LED
Refer to Figure 3.5 for the location of the Serial status LEDs.
Figure 3.7 TSC-9902 (Bottom) — SERIAL TX LED
Table 3.3 describes the behavior of the Serial LEDs.
Table 3.3 Serial Status LEDs
Status Description
Serial Rx
Green This LED is not implemented.
Serial Tx
Yellow When this LED is lit, the TSC-9902 is transmitting RS-422 serial
communication signals.
RS-422 OUT
Left Right
SERIAL TX LED
Left Right