TB 9-6625-2250-35
(18) Press synthesizer/level generator AMPLITUDE key.
(19) Press synthesizer/level generator INCR ⇓ key.
(20) Press TI AMPLITUDE key then [REF LVL] to -1 dBm.
(21) Press TI CONTROL TRIG key then [SINGLE] key and wait for completion of
sweep.
(22) TI ∆ MKR indication will be between 0 and -2 dB.
(23) Repeat technique of (19) through (21) above for synthesizer/level generator
amplitude and TI AMPLITUDE [REF LVL] settings listed in table 8. TI ∆ MKR
indications will be within limits specified in table 8.
Table 8. Log Gain Uncertainty (1 dB
Steps)
Synthesizer/level
Test instrument
generator amplitude
AMPLITUDE (REF LVL)
∆ MKR indications
settings
settings
(dB)
(dBm)
(dBm)
Min
Max
+8
-2
-3
-1
+7
-3
-4
-2
+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 No. 1 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].
21