Chapter 6
Installation and Configuration in G Mode
© National Instruments Corp.
6-3
GPIB-232CT User Manual
Set Configuration Switches
The DIP switch at location U22 on the printed wire board is used to
configure the GPIB address of the GPIB-232CT while in G mode.
The DIP switch, shown in Figure 6-1, has eight configuration switches.
1
2
3
4
5
6
7
8
O
F
F
U22
O
N
ON indicates that the
switch is pressed on the
"ON" side.
OFF indicates that the
switch is pressed on the
"OFF" side.
Figure 6-1. G Mode Switch Settings
Notice that to put the GPIB-232CT into G mode, Switch 1 of U22 should
be ON and Switches 2 and 3 should be in the OFF position.
Connecting the serial device to the GPIB-232CT converts the serial device
into a GPIB device. Each GPIB device has a GPIB address. The
GPIB-232CT uses two GPIB addresses—the one you select by setting the
configuration switches, and the second address equal to the address you
select plus one. The first becomes the GPIB-232CT's address. The second
becomes the serial device's address.
The GPIB addresses of the GPIB-232CT and the serial device must be
different from the addresses of the other GPIB devices in your system.
Determine the GPIB addresses of the other GPIB devices; then, using the
list on the following page, select two consecutive addresses that are not
already in use.
Configure the GPIB-232CT primary address by setting the switches as
shown in Table 6-1. The corresponding talk and listen addresses are also
shown.
