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Performance Verification
4–18
AM700 Audio Measurement Set Service Manual
7. Press the mV/kHz button in the keypad to change the units to mV and press
Enter.
8. Press the Configure button.
9. Touch the Input Selection soft key.
10. Make sure the input selection for Ch A and Ch B are set to FP A and FP B,
not Gen A and Gen B.
11. Set the Impedance for FP A and FP B to 600 W by touching the Impedance
edit box and turning the control knob to scroll through the impedance
choices until 600 W is displayed in the edit box. (This test assumes that the
input resistors are within tolerance.)
12. Press the Clear Menu button.
13. Press the Control button in the Generator controls. Check that the generator
is set to High Resolution mode.
14. Touch Waveform Control and make sure both Analog A and Analog B
generators are set to 1 kHz.
15. Set the Amplitude of both analog generators to 1.015 V.
16. Touch the Advanced Analog Controls soft key.
17. Touch Output Impedance soft key.
18. Ensure that the generator source impedance is set to 10 W. Press the Clear
Menu button.
19. Touch the generator status icon.
20. Touch A:Sine Level. Press and release the Units button until the units change
to V. Turn the main control knob to set generator amplitude for a RT level
readout of approximately 1 V.
21. Press the Control button in the Generator section of the front panel.
22. Touch Advanced Analog Controls soft key and set the output impedance to
150 W. Press the Enter button.
23. Press the Clear Menu button.
24. Check to see that the Level reading dropped to approximately 800 mV
(816.8 mV) (within a few percent).
25. Press the Control button in the Generator controls.