TB 9-4931-527-40
Figure 2. FM distortion - equipment setup.
(8) Set measuring receiver to measure frequency.
(9) Note ACV indication on multimeter or set reading as reference utilizing percent
error feature.
NOTE
To utilize percent error feature on multimeter, set carrier
frequency reference utilizing "SMATH" command, then utilize
"MATH PERC" command to read percent error indications at
desired low and high end points.
(10) Adjust TI CARRIER FREQUENCY TUNE until measuring receiver indicates
400.400 0.010 MHz. Multimeter will indicate within 2 mV ac of indication noted in (9)
above or + 0.1% error.
(11) Adjust TI CARRIER FREQUENCY TUNE until measuring receiver indicates
399.600 0.010 MHz. Multimeter will indicate within 2 mV ac of indication noted in (9)
above or + 0.1% error.
b. Adjustments. No adjustments can be made.
10. FM Flatness
a. Performance Check
(1) Connect equipment as shown in figure 3, CONNECTION A.