TB 9-6625-2339-24
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
NOTE
If calibrating model E4407B stop here and proceed to step (27)
below. For all other models complete steps (20) through (27)
below.
(20) Press TI keys as listed in (a) through (k) below:
(a) AMPLITUDE, [More], [Ref Level Offset] (enter value calculated in (9) above).
(b) BW/Avg, [Res BW], 1, [MHz].
(c) [Video BW], 1, 0, [kHz].
(d) FREQUENCY, [Start Freq], 1, 0, [MHz].
(e) [Stop Freq], 1, [GHz].
(f) Sweep, [Sweep] (Cont).
(g) [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 as
listed in (a) through (e) below:
(a) Peak Search.
(b) BW/Avg, [Average] (Off).
(c) Marker, [MarkerCF].
(d) Span, 5, 0, 0, [Hz].
(e) BW/Avg, [Res BW], 1, 0, [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 in
31
