Table 2-12. Jumper Settings Of The Nulling Circuits - National Instruments SCXI-1121 User Manual

Chapter 2 Configuration and Installation
SCXI-1121 User Manual

Table 2-12. Jumper Settings of the Nulling Circuits

Jumper Position
D
E
W1
D
E
•
•
W2
•
•
D
E
W3
D
E
•
•
W4
•
•
SCXI-1121 Shunt Calibration
Shunt calibration circuits are independent from each other but are
controlled together. In other words, when SCAL is set to 1 on the
SCXI-1121, all the shunt switches close when SCAL is cleared to 0, all the
switches open. At startup or reset, all switches are open. This shunt
calibration circuitry configuration places a shunting resistor in parallel with
the strain gauge as shown in Figure 2-10.
Nulling circuit of Channel 0 is enabled;
•
factory setting
•
Nulling circuit of Channel 0 is disabled
•
•
Nulling circuit of Channel 1 is enabled;
D
factory setting
E
Nulling circuit of Channel 1 is disabled
D
E
Nulling circuit of Channel 2 is enabled;
•
factory setting
•
Nulling circuit of Channel 2 is disabled
•
•
Nulling circuit of Channel 3 is enabled;
D factory setting
E
Nulling circuit of Channel 3 is disabled
D
E
2-28
Description
www.natinst.com