TB 9-4931-217-40
Table 1. Calibration Description Continued
Test instrument parameters
Performance specifications
1
Series
Range: 0 to 1,200 microfarads in 7 ranges
Accuracy: 0.2% +1 dial division +0.5% X D X fkHz for highest range;
0.1% +1 dial division +0.5% X D X fkHz for other five ranges; 0.2%
+1 dial division +1.0% X D X fkHz for lowest range
Range: D = 0 to 10.5 x fkHz in 3 ranges
Accuracy: 0.005 fkHz (1 + D2) +0.02D for highest and other five
ranges; 0.010 fkHz (1 + D2) +0.02D for lowest range
Parallel
Range: 0 to 1,200 microfarads in 7 ranges
Accuracy: 0.2% +1 dial division +0.5% X D X fkHz/Q for highest
0.1% +1 dial division +0.5% X D X fkHz/Q for other five
range;
ranges; 0.2% +1 dial division +1.0% X D X fkHz/Q for lowest range
Range: Q = 0 to 10.5 x fkHz in 3 ranges
Accuracy: 0.005 fkHz (1 + Q2) +0.02Q for highest and other five
ranges; 0.010 fkHz (1 + Q2) +0.02Q for lowest range
Multiplier
Range: X0.01, X0.1, X100
Accuracy: 2 ppm
Range: X1, X10
Accuracy: 1 ppm
Model 801
0 to 600 V dc
Range: 3 V to 1000 V dc
Null detector
Accuracy: (5% + 0.1 V)
Model SP 2979
1 dial div
Deviation linearity
Aange: 100
R
ccuracy: 2 ppm
Range: 1 k , 100 k
A
ccuracy: 1.5 ppm
A
Range: 10 k
ccuracy: 1ppm
Accuracy specifications for inductors and capacitance standards apply for units with reasonably high Q (low D) at frequencies
1
near 1 kHz. Nominal frequency range is 100 Hz to 10 kHz, with slight accuracy derating near the limits.
2Accuracy verified as a function of linearity.
EQUIPMENT REQUIREMENTS
4. Equipment Required. Table 2 identifies the specific equipment used in this
calibration procedure. This equipment is issued with Secondary Reference Standards
Calibration - Set, NSN 4931-00-621-7878, and is to be used in performing this procedure.
Alternate items may be used by calibrating activity when equipment listed in table 2 is not
available. The items selected must be verified to perform satisfactorily prior to use and
must bear evidence of current calibration. The equipment must meet or exceed minimum
use specifications listed in table 2. The accuracies listed in table 2 provide a four-to-one
ratio between standard and TI. Where the four-to-one ratio cannot be met, the actual
accuracy of the equipment selected is shown in parenthesis.