TB 9-6625-2339-24
Table 22. Displayed Average Noise Level (10 Hz RBW)
Test instrument
Start frequency
Stop frequency
Resolution BW
Video BW
Display line indication
Max (dBm)
10
MHz
1 GHz
10 Hz
1 Hz
135
1
GHz
2 GHz
10 Hz
1 Hz
134
2
GHz
3 GHz
10 Hz
1 Hz
131
3
GHz
6 GHz
10 Hz
1 Hz
131
6
GHz
12 GHz
10 Hz
1 Hz
129
12
GHz
18 GHz
10 Hz
1 Hz
126
(27) Press TI Preset key and disconnect equipment setup.
b. Adjustments. None.
19. Residual Responses
a. Performance Check
(1) Connect 50 Ω termination to TI INPUT 50Ω.
(2) Press TI keys as listed in (a) through (j) below:
(a) Preset.
(b) [Factory Preset] (if it is displayed).
(c) FREQUENCY, [Start Freq], 1, 5, 0, [kHz].
(d) [Stop Freq], 1, [MHz].
(e) AMPLITUDE, [Ref Level], 6, 0, [dBm].
(f) [Attenuation], 0, [dB].
(g) BW/Avg, [Res BW], 3, [kHz].
(h) [Video BW], 1, [kHz].
(i) Display, [Display line] (On), 9, 0, [dBm].
(j) Single.
(3) When sweep is finished, look for any residual responses at or above TI display line.
NOTE
If a residual is suspected, press TI Single key again. A
residual response will persist on successive sweeps, but a noise
peak will not.
(4) Press TI keys as listed in (a) through (j) below:
(a) Preset.
(b) [Factory Preset] (if it is displayed).
(c) FREQUENCY, 5, . , 9, [MHz].
(d) [CF Step], 9, ., 9, [MHz].
(e) SPAN, 1, 0, [MHz].
(f) AMPLITUDE, [Ref Level], 6, 0, [dBm].
(g) [Attenuation], 0, [dB].
(h) BW/Avg, [Res BW], 1, 0, [kHz].
(i) [Video BW], 3, [kHz].
(j) Display, [Display Line] (On), 90, [dBm].