TB 9-6625-2333-24
(32) TI ' MKR indication will be between -9 and -11 dB.
(33) Repeat technique of (29) through (31) above for synthesizer/level generator and
Table 12. Linear IF Gain Uncertainty
Synthesizer/level
Test instrument
'MKR indications
REF LVL
generator amplitude
settings
settings
(dB)
(dBm)
(dBm)
Min
Max
-10
-20
-21
-19
-20
-30
-31
-29
-30
-40
-41
-39
-40
-50
-51
-49
-50
-60
-61
-59
-60
-70
-71
-69
-70
-80
-81
-79
b. Adjustments. Refer to paragraph 6 c above.
13. Residual FM
a. Performance Check
(1) Connect synthesized signal generator RF Output to TI INPUT 50 :.
(2) Set synthesized signal generator frequency to 2.5 GHz and level output to 0 dBm.
(3) Press TI keys and enter values using DATA keys listed in (a) through (q) below:
INSTRUMENT STATE PRESET.
(a)
FREQUENCY then [CENTER FREQ] to 2.5 GHz.
(b)
SPAN then [SPAN] to 1 MHz.
(c)
MARKER PEAK SEARCH.
(d)
MARKER MKR.
(e)
[SIG TRK ON OFF] to select ON.
(f)
SPAN then [SPAN] to 5 kHz wait for signal to be centered in a 5 kHz span.
(g)
CONTROL BW then [RES BW] to 10 Hz.
(h)
SPAN then [SPAN] to 100 Hz wait for signal to be centered in a 100 Hz span.
(i)
MARKER MKR.
(j)
[SIG TRK ON OFF] to select OFF.
(k)
AMPLITUDE then [LOG dB/DIV] to 2 dB.
(l)
MARKER PEAK SEARCH.
(m)
MARKER MKRo.
(n)
[MARKERo REF LVL].
(o)
MARKER PEAK SEARCH.
(p)
[MARKER DELTA]
(q)