TB 9-6625-2339-35
Table 21. Displayed average noise level (1 kHz
RBW)
Test instrument
Start frequency
Stop frequency
Resolution BW
Video BW
Display line indication
Max (dBm)
10
MHz
1 GHz
1 kHz
30 Hz
116
1
GHz
2 GHz
1 kHz
30 Hz
115
2
GHz
3 GHz
1 kHz
30 Hz
112
3
GHz
6 GHz
1 kHz
30 Hz
112
6
GHz
12 GHz
1 kHz
30 Hz
110
12
GHz
18 GHz
1 kHz
30 Hz
107
(20) Press TI keys and enter values as listed in (a) through (k) below:
(a) AMPLITUDE, [More], [Ref Lvl Offset] (enter value calculated in (9) above).
(b) BW/Avg, [Res BW], 1, [MHz].
(c) BW/Avg, [Video BW], 10, [kHz].
(f) Sweep, [Sweep] (Cont).
(g) Sweep, [Sweep Time] (Auto).
(h) Single.
(i) View/Trace, [Trace 1], [Clear Write].
(j) BW/Avg, [Avg Type], [Video Avg], [Average], 3, Enter.
(k) Single.
(21) Wait until Vavg 3 is displayed to the left of graticule lines then press TI keys
and enter values as listed in (a) through (e) below:
(a) Peak Search.
(b) BW/Avg, [Average] (Off).
(c) Marker→, [Marker→CF].
(d) Span, 500, [Hz].
(e) BW/Avg, [Res BW], 10, [Hz], [Video BW], 1, [Hz].
(22) Press TI Single key and wait for sweep completion.
(23) Press TI Display and [Display Line] (On) keys.
(24) Using TI rotary knob, adjust TI display line to center it on average trace noise.
TI display line indication will be within limits specified in first row of table 22.
(25) Press TI [Display Line] (Off) key.
(26) Repeat technique of (20) (b) through (25) above for remaining frequencies listed
31