National Instruments SCXI -1125 用户手册
© National Instruments Corporation
5
SCXI-1125 Calibration Procedure
7.
Connect the calibrator to the appropriate analog input, starting
with channel 0. Refer to Figure 1 to determine which pins on the
96-pin front connector correspond to the positive and negative inputs
of the specified channel. For example, the positive input for channel 0
(CH0+) is pin A32. The negative input for channel 0 (CH0–) is pin
C32. If you are using an SCXI-1320 terminal block connected to the
SCXI-1125, connect the calibrator to the CH0+ and CH0– inputs.
with channel 0. Refer to Figure 1 to determine which pins on the
96-pin front connector correspond to the positive and negative inputs
of the specified channel. For example, the positive input for channel 0
(CH0+) is pin A32. The negative input for channel 0 (CH0–) is pin
C32. If you are using an SCXI-1320 terminal block connected to the
SCXI-1125, connect the calibrator to the CH0+ and CH0– inputs.
8.
Call
SCXI_Single_Chan_Setup
to configure the module for
single-channel measurements. Set the following parameters:
•
SCXIchassisID—The value assigned by MAX
•
moduleSlot—1
•
moduleChan—The same channel number from step 7
•
DAQdeviceNumber—The device number assigned by MAX for
the E Series DAQ device
the E Series DAQ device
9.
Call
SCXI_Set_Gain
to set the gain you want to test on the module.
Set the following parameters:
•
SCXIchassisID—The ID obtained when the chassis is configured
with MAX
with MAX
•
moduleSlot—1
•
channel—The channel number from step 7
•
gain—The first gain value you want to test—you can find this
gain value in Table 1.
gain value in Table 1.
10. Call
SCXI_Configure_Filter
to configure the filter setting on the
module. Set the following parameters:
•
SCXIchassisID—The ID obtained when the chassis is configured
with MAX
with MAX
•
moduleSlot—1
•
channel—The channel number from step 7
•
filterMode—1
•
cutoffFrequency—10,000
11. Set the calibrator to output the test point voltage from Table 1.
12. Call
DAQ _Op
. Set the following parameters:
•
deviceNumber—The device number of the DAQ device
•
channel—0
•
gain—1 for 16-bit E Series devices or –1 for 12-bit E Series
devices
devices
•
count—5,000
•
sampleRate—10,000