TB 9-6625-2351-35
Table 5. Log Gain Uncertainty (10 dB
Steps)
Synthesizer/level
Test instrument
AMPLITUDE [REF
∆ MKR indications
generator amplitude
LVL] 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
(14) Set synthesizer/level generator amplitude to +10 dBm and AMPTD INCR to 1 dB.
(15) Press TI keys and enter values using DATA keys as listed in (a) though (c) below:
(a) MARKER MKR→ then [MARKER NORMAL].
(b) AMPLITUDE then [REF LVL] to 0 dBm.
(c) CONTROL TRIG then [CONT].
(16) Adjust attenuator to position signal peak 2 to 3 dB (2 to 3 divisions) below TI
reference level.
(17) Press TI keys as listed in (a) through (e) below:
(a) CONTROL TRIG.
(b) [SINGLE].
(c) [SINGLE].
(d) MARKER ON.
(e) [MARKER DELTA].
(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 6. TI ∆ MKR
indications will be within limits specified in table 6.
Table 6. Log Gain Uncertainty (1 dB
Steps)
Synthesizer/level
Test instrument
AMPLITUDE [REF LVL]
generator amplitude
∆ MKR indications
settings
settings
(dB)
(dBm)
(dBm)
Min
Max
+8
-2
-3
-1
+7
-3
-4
-2
16