TB 9-6625-2351-35
Table 6. Log Gain Uncertainty (1 dB Steps) - Continued
Synthesizer/level
Test instrument
AMPLITUDE [REF LVL]
∆ MKR indications
generator amplitude
settings
settings
(dB)
(dBm)
(dBm)
Min
Max
+6
-4
-5
-3
+5
-5
-6
-4
+4
-6
-7
-5
+3
-7
-8
-6
+2
-8
-9
-7
+1
-9
-10
-8
0
-10
-11
-9
-1
-11
-12
-10
-2
-12
-13
-11
(24) Set synthesizer/level generator amplitude to +10 dBm and AMPTD INCR to 10 dB.
(25) Press TI keys to values using DATA keys as listed in (a) through (e) below:
MARKER MKR→ then [MARKER NORMAL].
(a)
(b)
AMPLITUDE then [REF LVL] to 0 dBm.
(c)
[LINEAR] then [MORE].
(d)
[UNITS] then [dBm].
(e)
CONTROL TRIG then [CONT].
(26) Adjust attenuator to position signal peak 2 to 3 dB (2 to 3 divisions) below TI
reference level.
(27) Press TI keys as listed in (a) through (e) below:
(a)
CONTROL TRIG.
(b)
[SINGLE].
(c)
[SINGLE].
(d)
MARKER ON.
(e)
[MARKER DELTA].
(28) Press synthesizer/level generator AMPLITUDE key.
(29) Press synthesizer/level generator INCR ⇓ key.
(30) Press TI AMPLITUDE key then [REF LVL] to -10 dBm.
(31) Press TI CONTROL TRIG key then [SINGLE] key and wait for completion of sweep.
(32) TI ∆ MKR indication will be between -9 and -11 dB.
(33) Repeat technique of (29) through (31) above for synthesizer/level generator and
TI AMPLITUDE [REF LVL] settings listed in table 7. TI ∆ MKR indications will be
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