Filter
Top Products
Chapter 2 Hardware Configuration and Installation
© National Instruments Corp. 2-13 STD-GPIB for Windows
1. Choose a new DMA channel setting.
You can use channel 5 or 6. If you are installing more than one STD-GPIB, each
module must either use a unique DMA channel or must not use DMA at all.
2. Locate the jumpers at W3 that select the DMA channel. Refer to the parts locator
diagram, Figure 2-3.
3. Change the jumper settings to configure the STD-GPIB to the new DMA channel.
To select a new DMA channel, you must set both the DMA Acknowledge and DMA
Request lines, as shown in Table 2-3.
Table 2-3. DMA Channels
Signal Lines
DMA
Channel
DMA
Acknowledge
DMA
Request
5 DACK5 DRQ5
6 DACK6 DRQ6
Figure 2-8 shows the jumper position for selecting DMA channel 6.
DRQ 6
W3
DACK 6
DACK 5
DRQ 5
Figure 2-8. DMA Channel Jumper Setting for DMA Channel 6
4. Record your new setting on the STD-GPIB Hardware and Software Configuration
Form in Appendix C, Customer Communication.
5. Remember that after you install the NI-488.2 software, you must use the GPIB
software configuration utility to configure your software setting to match your new
hardware settings. Refer to the Configure the Software section in Chapter 3,
Software Installation and Configuration, for more information.