TB 9-6625-132-24
10. Amplitude Flatness
a. Performance Check
(1) Connect TI OUTPUT to multimeter input using a 50 Ω feedthrough termination.
(2) Set multimeter to synchronous VAC and autorange.
(3) Set TI controls as indicated in (a) through (h) below.
(a) FREQUENCY Hz
10
103
(b) MULTIPLIER
(c) FREQUENCY VERNIER
fully CW
(d) Waveform pushbutton
(Sine)
(e) VAR SYMM
off
(f) FREE RUN
in
(g) ATTENUATOR
0 dB
(h) OFFSET
off
(4) Set TI AMPL control for a 5.303301 V rms indication on multimeter.
(5) Using the TI FREQUENCY Hz and MULTIPLIER controls, adjust TI frequency
slowly from 20 Hz to 20 kHz. Multimeter will indicate between 5.242594 and 5.364710 V rms.
(6) Using the TI FREQUENCY Hz and MULTIPLIER controls, adjust TI frequency
slowly from 20 kHz to 1 MHz. Multimeter will indicate between 5.006639 and 5.617541 V rms.
(7) Using the TI FREQUENCY Hz and MULTIPLIER controls, adjust TI frequency
slowly from 1 MHz to 2 MHz. Multimeter will indicate between 4.726572 and 5.950401 V rms.
(Triangle) button in.
(9) Set TI AMPL control for a 4.330127 V rms indication on multimeter.
(10)Using the TI FREQUENCY Hz and MULTIPLIER controls, adjust TI frequency
slowly from 20 Hz to 200 kHz. Multimeter will indicate between 4.087904 and 4.586703 V rms.
(11)Using the TI FREQUENCY Hz and MULTIPLIER controls, adjust TI frequency
slowly from 200 kHz to 2 MHz. Multimeter will indicate between 3.439542 and 5.451307 V rms.
(Square) button in.
(13)Set TI AMPL control for a 7.500000 V rms indication on multimeter.
(14)Using the TI FREQUENCY Hz, and MULTIPLIER controls, adjust TI frequency
slowly from 20 Hz to 2 MHz. Multimeter will indicate between 7.080457 and 7.944403 V rms.
(15)Set TI AMPL control to minimum.
b. Adjustments. No adjustments can be made.