TB 9-6625-2339-24
(29) Set all outputs to minimum and disconnect equipment setup.
b. Adjustments. None.
18. Displayed Average Noise
a. Performance Check
(1) Connect TI AMPTD REF OUT to INPUT 50.
(2) Press TI keys as listed in (a) through (m) below:
(a) Preset.
(b) [Factory Preset] (if it is displayed).
(c) Sweep, [Points 401].
(d) Input/Output (or Input), [Amptd Ref Out] (On).
(e) FREQUENCY, 5, 0, [MHz].
(f) SPAN, 2, [kHz].
(g) AMPLITUDE, [Ref Level], 2, 0, [dBm].
(h) [Attenuation], 1, 0, [dB].
(i) BW/Avg, [Res BW], 1, [kHz].
(j) [Video BW], 1, [kHz].
(k) Det/Demod, [Detector], [Sample], ◄Return.
(l) Single.
(m) Peak Search (or Search).
(3) Record the TI MARKER amplitude reading as reading 1.
(4) Press TI keys as listed in (a) through (f) below:
(a) AMPLITUDE, [Attenuation], 0, [dB].
(b) SPAN, 2, 0, [kHz].
(c) BW/Avg, [Res BW], 1, [kHz].
(d) [Video BW], 3, 0, [Hz].
(e) Single.
(f) Peak Search (or Search).
(5) Record the TI MARKER amplitude reading as reading 2.
(6) Calculate reference level offset by subtracting reading 2 from reading 1. If the
calculated reference level offset is greater than 0.05 dB or less than 0.05 dB, record as Ref
Level Offset (1 kHz RBW) value, otherwise, enter 0.
(7) Press TI keys as listed in (a) through (f) below:
(a) AMPLITUDE, [Attenuation], 0, [dB].
(b) SPAN, 5, 0, 0, [Hz].
(c) BW/Avg, [Res BW], 1, 0, [Hz].
(d) [Video BW], 1, [Hz].
(e) Single.
(f) Peak Search (or Search).
(8) Record the TI MARKER amplitude reading as reading 3.