TB 9-6625-2321-24
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Digital Multimeter, National Instruments, Model DAQCard-4050. The
manufacturer's manual was used as the prime data source in compiling these instructions.
The equipment being calibrated will be referred to as the TI (test instrument) throughout
this bulletin.
a. Model Variations. None.
b. Time and Technique. The time required for this calibration is approximately 1
hour, using the dc and low frequency technique.
2. Forms, Records, and Reports
a. Forms, records, and reports required for calibration personnel at all levels are
prescribed by TB 750-25.
b. Adjustments to be reported are designated (R) at the end of the sentence in which
they appear. When adjustments are in tables the (R) follows the designated adjustment.
Report only those adjustments made and designated with (R).
3. Calibration Description. TI parameters and performance specifications which
pertain to this calibration are in table 1.
Test instrument
parameters
Performance specifications
Dc voltage
Range: 0.2 to 200 V
1% of range
Accuracy:
Ac voltage
Range: 0.2 to 200 V
Accuracy:
3% of range
Aange: 0 to 20 M
R
1% of range
ccuracy:
Dc current1
Range: 20 to 200 mA dc
1% of range
Accuracy:
Ac current1
Range: 20 to 200 mA ac
Accuracy:
3% of range
1Current
measurements require current shunt CSM-200ma (part of TI).