National Instruments SCXI-1121 Manuel D’Utilisation

2.

Following the procedure given in the 

 section, write 

00000000 00000000

 to the Configuration Register of the 

SCXI-1121 in Slot 2. This step resets the module, including the 
clearing of the AB0EN bit (bit 0). Notice that a complete reset of this 
module is not necessary, but is used for simplicity.

3.

Following the procedure given in the 

 section, write 

100XXX00 00001111

 to the Configuration Register of the 

SCXI-1121 in Slot 4. 

4.

Following the procedure given in the 

 section, write 

010XXX01 00001111

 to the Configuration Register of the 

SCXI-1121 in Slot 1.

5.

Following the procedure given in the 

 section, write 

010XXX11 00001111

 to the Configuration Register of the 

SCXI-1121 in Slot 3. Notice that after Channel 3, the SCXI-1121 will 
wrap around to Channel 0.

6.

Follow the steps given in the section earlier in this chapter, 

, where step 3, Write the 

Slot 0 scan list to the FIFO, consists of the following:

a.

Write 

00000000 00000010

 to the FIFO Register. This 

corresponds to Slot 1 for three samples.

b.

Write 

00000001 10000001

 to the FIFO Register. This 

corresponds to Slot 4 for two samples.

c.

Write 

00000001 00000011

 to the FIFO Register. This 

corresponds to Slot 3 for four samples.

Make sure to toggle SLOT0SEL* or reselect the FIFO Register from 
scratch between steps 6a, 6b, and 6c.

7.

Follow the procedure given in the 

 section earlier in this chapter.

You want to scan four channels on an SCXI-1121 in Slot 4 of Chassis 1, 
then two channels of an SCXI-1121 in Slot 11 of Chassis 2, one channel of 
an SCXI-1121 in Slot 3 in Chassis 3, and three channels of an SCXI-1121 
in Slot 8 of Chassis 3.