TB 9-4931-535-35
INPUT IMPEDANCE 50Ω.
(b)
(c)
ENTRY START FREQ to 10 MHz.
(d)
ENTRY STOP FREQ to 40 MHz.
(e)
TRACE A - B to off.
(13) Repeat (2) through (11) above. TI marker amplitude indication will be between
1.5 and 1.5 dB in (10) above.
14. Noise
a. Performance Check
(1) Ensure TI front panel inputs are open.
(2) Press keys and enter values using ENTRY keys as listed in (a) through (f)
below:
(a)
ENTRY INSTR PRESET.
(b)
ENTRY CENTER FREQUENCY to 9.35 MHz.
(c)
ENTRY REFERENCE LEVEL to -75 dBm.
(d)
RBW-VBW-ST ENTRY RES BW to 30 kHz.
(e)
RBW-VBW-ST ENTRY VIDEO BW to 30 Hz.
(f)
MARKER/CONTINUOUS ENTRY MAN SWEEP to on.
(3) Average TI marker amplitude indication will be <-100 dBm.
(4) Press RBW-VBW-ST ENTRY RES BW key.
(5) Press ENTRY STEP ⇓ key.
(6) Average TI marker amplitude indication will be <-104 dBm.
(7) Repeat technique of (5) and (6) above for the remaining TI settings and
indications listed in table 5.
Table 5. Noise
Test instrument
Average marker
RBW-VBW-ST
amplitude
ENTRY RES BW
indications
settings
(dBm)
3
kHz
< -108
1
kHz
< -111
300
Hz
< -115
100
Hz
< -122
30
Hz
< -127
10
Hz
< -132
3
Hz
< -137
