TB 9-6625-2317-40
(15) Audio analyzer display will indicate <0.15% distortion.
b. Adjustments. No adjustments can be made.
14. PM Deviation Accuracy
a. Performance Check
(1) Connect equipment as shown in figure 6, CONNECTION A.
(2) Set audio analyzer SOURCE LEVEL to 153 mV.
(3) Configure measuring receiver for PM measurement and record phase
modulation displayed indication.
NOTE
Add filters on measuring receiver as necessary to indicate a
stable reading.
(4) Connect equipment as shown in figure 6, CONNECTION B.
(5) Press TI LEVEL DISPLAY PM pushbutton (on).
(6) TI LEVEL/DATA ENTRY display will indicate within 3% +3 counts of the
recorded value in (3) above.
(7) Connect equipment as shown in figure 6, CONNECTION A.
(8) Set audio analyzer SOURCE LEVEL to 229 mV.
(9) On measuring receiver, record phase modulation displayed indication.
(10) Connect equipment as shown in figure 6, CONNECTION B.
(11) TI LEVEL/DATA ENTRY display will indicate within 3% +3 counts of the
recorded value in (9) above.
b. Adjustments. No adjustments can be made.
15. AF Accuracy
a. Performance Check
(1) Connect equipment as shown in figure 7.
(2) Set calibrator WIDEBAND output to 1 kHz at 114.5 mV.
(4) Press TI pushbuttons (on) as indicated in (a) through (c) below:
(a) LEVEL DISPLAY FM.
(b) LOW PASS FILTER 75 kHz.
(c) FREQ DISP AF.