Chapter 2
Configure and Install Your Hardware
©
National Instruments Corporation
2-5
Configure the Serial Port Parameters
You can use the DIP switch SW2 on the rear panel (see Figure 1-3,
) to configure the serial port parameters of the
GPIB-232CV-A. Figure 2-2 shows the factory default setting.
Figure 2-2.
Factory Default Switch Settings for SW2
In Figure 2-2, switches 1 through 3 are ON, OFF, and ON, respectively,
indicating that the serial port is operating at 9600 baud. Switches 4 and 5
are both OFF, which indicates that parity is disabled. Switch 6 is OFF,
which indicates 1 stop bit per character. Switch 7 is OFF, indicating that the
GPIB-232CV-A is using 7 bits/character for its serial data transfers.
Switch 8 is OFF, indicating that XON/XOFF software handshaking is
disabled.
Tables 2-4 and 2-5 show the possible configurations of SW2 and what the
configurations indicate. Default settings appear in bold italics.
Table 2-4.
Configuration Parameters for SW2 Switches 1 through 3
Switches
Indication
1
2
3
OFF
OFF
OFF
300 baud
ON
OFF
OFF
600 baud
OFF
ON
OFF
1200 baud
ON
ON
OFF
2400 baud
OFF
OFF
ON
4800 baud
ON
OFF
ON
9600 baud
SW2
BAUD RATE
DATA FORMAT
HANDSHAKE
1 2 3 4 5 6 7 8
O
N
