TB 9-6625-357-35
NOTE
Increase function/arbitrary generator frequency when selector
switch is in LOW PASS position and decrease when in HIGH
PASS position.
(2) Adjust function/arbitrary generator frequency to 50 Hz and amplitude for a 1 V
indication on true rms voltmeter.
(3) Adjust function/arbitrary generator frequency for a 0.816 V indication on true
rms voltmeter. Record frequency indication on frequency counter.
frequency indication recorded in (3) above. True rms voltmeter will indicate 126 mV or less.
(5) Repeat technique of (1) through (4) above for selector switch positions and
function/arbitrary generator frequencies listed in table 5. True rms voltmeter will indicate
126 mV or less.
(6) Repeat technique of (1) through (5) above for INPUT 2.
Function/arbitrary generator
Test instrument
frequency
Frequency dial settings
Selector switch settings
(Hz)
20
LOW PASS X10
50
2
LOW PASS X1K
200
2
LOW PASS X10K
2000
20
HIGH PASS X10
2000
20
HIGH PASS X100
20,000
2
HIGH PASS X1K
20,000
2
HIGH PASS X10K
200,000
b. Adjustments. No adjustments can be made.
11. Distortion
a. Performance Check
(1) Connect audio analyzer to function/arbitrary generator output, using
termination and measure function/arbitrary generator distortion at 20 Hz and 3 V. Record
distortion value.
(2) Connect function/arbitrary generator to TI INPUT 1, using termination.
Connect audio analyzer to TI OUTPUT 1.
(3) Set frequency dial to 20 and selector switch to LOW PASS X10.
NOTE
Ensure function/arbitrary generator is still set at 20 Hz and 3 V.
(4) Measure distortion and record value. The difference between this value and the
value recorded in (1) above will not exceed 0.5 percent.
