Chapter 2 Configuration and Installation
SCXI-1121 User Manual 2-10 www.natinst.com
Excitation Level

Each excitation channel of your SCXI-1121 has two different current or

voltage levels. You can set a given channel to one of the following level

modes:

• In the Current mode 0.150 or 0.450 mA

• In the Voltage mode 3.333 or 10 V

It is important to notice that you should select the level of excitation

according to the load you are using. Table 2-7 lists the maximum load that

can be driven per channel at each level of excitation for both volt and

current excitation.

Table 2-6. Voltage and Current Mode Excitation Jumper Setup

Excitation

Channel Jumpers Voltage Mode

(Factory Setting) Current Mode

0W14 and W15

1W22 and W23

2W34 and W35

3W46 and W47

•
•
•
W14
1 2 3
•
•
•
W15
1 2 3
•
•
•
W14
1 2 3
•
•
•
W15
1 2 3
•
•
•
W22
1 2 3
•
•
•
W23
1 2 3
•
•
•
W22
1 2 3
•
•
•
W23
1 2 3
•
•
•
W34
1 2 3
•
•
•
W35
1 2 3
•
•
•
W34
1 2 3
•
•
•
W35
1 2 3
•
•
•
W46
1 2 3
•
•
•
W47
1 2 3
•
•
•
W46
1 2 3
•
•
•
W47
1 2 3