C H A P T E R 4
D a t a C o l l e c t i o n
4-1
This chapter contains information related to the UWCPC’s data
interfaces and optional embedded PC/104 single board computer
for data collection.
D a t a I n t e r f a c e s
The UWCPC provides several data interfaces allowing for flexible
data collection and instrument control. There are four connectors
on the back panel. Two connectors provide direct access to the
UWCPC and the remaining two provide access to the optional
PC/104 single board computer (SBC). The connectors are:
Serial
Standard RS-232 type serial communications.
This interface is provided through the 9-pin D-
Sub connector on the back panel of the UWCPC.
The connector pin-out is given in Table 4-1.
USB
Universal Serial Bus communications. This
interface provides an alternate path for the serial
interface mentioned above. To a host computer,
this interface acts like an additional serial port to
the computer.
PC/104 Serial
Serial communications to the optional internal
PC/104 SBC (PC/104 Com1)
PC/104 Ethernet Ethernet connection to the optional internal
PC/104 SBC (PC/104 eth0)
Table 4-1.
Serial Connector Signal Connections
Pin Number
Signal
Direction
2
RXD
INPUT TO UWCPC
3
TXD
OUTPUT FROM UWCPC
5 GND
—
When the PC/104 SBC is installed there is an internal connection
between the UWCPC and the PC/104 SBC. If the UWCPC is
purchased without the optional PC/104 SBC, the associated
connectors have no internal connections to the UWCPC.