TB 9-6625-2134-24
(e) REFERENCE LEVEL control to -30 dBm.
(f) FREQUENCY SPAN/DIV control to 10 kHz.
(g) RESOLUTION BANDWIDTH control to 1 MHz.
(h) VIDEO FILTER WIDE pushbutton on.
(j) TIME/DIV switch to .5 s.
(j) DIGITAL STORAGE VIEW A pushbutton on.
(k) DIGITAL STORAGE VIEW B pushbutton on.
(l) MIN NOISE pushbutton off.
(m) PEAK/AVERAGE control fully cw.
(2) Observe noise level below -30 dBm reference level. Noise level must be less than -80 dBm.
(3) Repeat technique of (2) above, using settings and values listed in table 9.
(4) Adjust REFERENCE LEVEL control to -60 dBm and TIME/DIV switch to 2 s.
(5) Repeat technique of (2) above, using settings and values listed in table 10.
Table 9. Average Noise Level dBm (Maximum) (-30 dBm).
Test instrument
Resolution bandwidth indications
FREQUENCY RANGE
settings
1 MHz
100 kHz
10 kHz
50
kHz to
7.1 GHz
-80
-90
-100
5.4 GHz to
18.0 GHz
-65
-75
-85
12.0 GHz to
18
GHz
-60
-70
-80
15.0 GHz to
21.0 GHz
-55
-65
-75
1
18.0 GHz to
26.5 GHz
-70
-80
-90
1
26.5 GHz to
40.0 GHz
-65
-75
-85
40
GHz to
60
GHz
-65
-75
-85
60
GHz to
90
GHz
Typically -95 dB, 1 kHz resolution bandwidth degrading
to -85 dBm at 90 GHz
140
GHz to 220
GHz
Depends on mixer
1 Tektronix,
Type high performance waveguide mixers.
Table 10. Average Noise Level dBm (Maximum) (-60 dBm).
Test instrument
Resolution bandwidth indications
FREQUENCY RANGE
settings
1 kHz
100 Hz (option 3)
50
kHz
to
7.1
GHz
-110
-118
5.4
GHz
to
18.0
GHz
-95
-103
12.0
GHz
to
18
GHz
-90
-108
15.0
GHz
to
21.0
GHz
-85
-93
1
18.0
GHz
to
26.5
GHz
-100
-108
1
26.5
GHz
to
40.0
GHz
-95
-103
1
40.0
GHz
to
60
GHz
-95
-103
60
GHz
to
90
GHz
Typically -95 dBm, 1 kHz resolution bandwidth
degrading to -85 dBm at 90 GHz.
90
GHz
to 140
GHz
Typically -95 dBm, 1 kHz resolution bandwidth
degrading to -75 dBm at 140 GHz`
140
GHz
to 220
GHz
Depends on mixer
1 Tektronix
high performance waveguide mixers.
61