TB 9-6625-2333-24
(2) Press TI keys and enter values using DATA keys as listed in (a) through (i) below:
INSTRUMENT STATE PRESET.
(a)
FREQUENCY then [CENTER FREQ] to 300 MHz.
(b)
SPAN then [SPAN] to 10 kHz.
(c)
CONTROL BW then [RES BW] to 300 Hz.
(d)
AMPLITUDE then [REF LVL] to -10 dBm.
(e)
[ATTEN] to 0 dB.
(f)
MARKER PEAK SEARCH.
(g)
INSTRUMENT STATE CAL.
(h)
[REF LVL ADJ].
(i)
(3) Slowly adjust TI knob until MKR amplitude indication is between -9.83
and -10.17 dBm.
(4) Press [STORE REF LVL] key.
(5) Disconnect TI CAL OUTPUT from INPUT 50 : and connect a 50 :
termination to INPUT 50 :.
(6) Press TI keys and enter values using DATA keys as listed in (a) through (i) below:
INSTRUMENT STATE PRESET.
(a)
FREQUENCY then [CENTER FREQ] to 15.2 MHz.
(b)
[CF STEP] to 28.5 MHz.
(c)
SPAN then [SPAN] to 30 MHz.
(d)
AMPLITUDE then [REF LVL] to -50 dBm.
(e)
[ATTEN] to 0 dB.
(f)
CONTROL BW then [RES BW] to 10 kHz.
(g)
CONTROL TRIG then [SWEEP CONT SGL] to select SGL.
(h)
CONTROL DISPLAY then [DISPLAY LINE] to -90 dBm.
(i)
(7) Press TI INSTRUMENT STATE SWP SGL key and wait for completion of new
sweep. The noise level will be at least 6 dB below the display line; if not, reduce SPAN and
RES BW values to reduce noise level.
NOTE
If SPAN is reduced, CF STEP reduction must be no more than
95 percent of the SPAN.
(8) If a residual is not present proceed to (13) below. If residual is suspected, press
INSTRUMENT STATE SWP SGL key. Record the amplitude and frequency of any
response above the display line.
NOTE
Noise peak will not persist when INSTRUMENT STATE
SWP SGL key is pressed. However a residual response will
persist.
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