TB 9-4931-540-35
10. Amplitude Linearity
a. Performance Check
(1) Connect synthesizer/level generator OUTPUT 50Ω to TI 50-75Ω input.
(2) Press keys and enter values using ENTRY keys as listed in (a) through (e)
below:
(a)
ENTRY INSTR PRESET.
(b)
SWEEP ENTRY MANUAL to 1 MHz.
(c)
RWB-VBW-ST ENTRY RES BW to 3 Hz.
(d)
RBW-VBW-ST ENTRY VIDEO BW to 1 Hz.
(e) INPUT ENTRY RANGE to 10 dBm using ENTRY STEP ⇑ or ⇓.
(3) Set synthesizer/level generator as listed in (a) through (c) below:
(a) FREQUENCY to 1 MHz.
(b) AMPLITUDE to 10 dBm.
(c) AMPTD INCR to 0.1 dBm.
(4) Adjust synthesizer/level generator amplitude, using INCR ⇑ or ⇓ keys, until TI
marker amplitude indicates 10.0 dBm.
(5) Press MARKER/CONTINUOUS ENTRY OFFSET key to on and then press
MARKER/CONTINUOUS ENTRY ENTER OFFSET key.
(6) Set synthesizer/level generator AMPTD INCR to 10 dBm.
(7) Press synthesizer/level generator INCR ⇓ key.
(8) TI marker amplitude indication will be between 9.7 and 10.3 dB.
(9) Repeat (7) above for remaining synthesizer/level generator settings listed in
Test instrument
Synthesizer/level
marker amplitude indications (dB)
generator
approximate
settings (dBm)
Min
Max
-10
-19.4
-20.6
-20
-29.4
-30.6
-30
-39.4
-40.6
-40
-49.0
-51.0
-50
-59.0
-61.0
-60
-69.0
-71.0
-70
-78.0
-82.0
-80
-88.0
-92.0
