TB 9-6625-2250-35
(17) Adjust attenuator No. 1 to position trace 2 to 3 divisions below TI reference
level.
(18) Press TI MARKER ON key then [MARKER DELTA] key.
(19) Press synthesizer/level generator AMPLITUDE key.
(20) Press synthesizer/level generator INCR ⇓ key.
(21) Press TI AMPLITUDE key then [REF LVL] to 15 dBm. Record actual ∆
MKR indication for TI
[REF LVL] 15 dBm
setting in
table 5.
(22) Subtract ideal ∆ MKR value from actual ∆ MKR indication listed in table 5 and
record difference as IF GAIN DEVIATION in table 5.
Synthesizer/level
Test instrument
IF GAIN
generator amplitude
[REF LVL]
∆ MKR
DEVIATION
settings
settings
indications
(dBm)
(dBm)
Actual (dB)
Ideal (dB)
(dB)
+10
-10
0 (ref)
0 (ref)
0 (ref)
+5
-15
-5
0
-20
-10
-5
-25
-15
-10
-30
-20
-15
-35
-25
-20
-40
-30
-25
-45
-35
-30
-50
-40
-35
-55
-45
-40
-60
-50
-45
-65
-55
-50
-70
-60
-55
-75
-65
-60
-80
-70
-65
-85
-75
-70
-90
-80
-75
-95
-85
-80
-100
-90
(23) Repeat (20) through (22) above for remaining synthesizer/level generator
amplitude and TI [REF LVL] settings listed in table 5.
(24) Calculate the IF GAIN CORRECTION for [ATTEN] 20 dB setting in table 6
by subtracting the IF GAIN DEVIATION value recorded for [REF LVL] 40 dBm setting
in table 5 from the IF GAIN DEVIATION value recorded for [REF LVL] 50 dBm setting
in table 5 as in EXAMPLE below. Record difference as IF GAIN CORRECTION in table 6.
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