TB 9-6625-2021-24
Input Sensitivity Check
11. 10 Hz to 18 GHz Frequency and 50
a. Performance Check
CAUTION
Do not exceed 1 W of power to 50 input, otherwise extensive
damage will occur to the test instrument.
(1) Connect function generator output to TI INPUT 50 .
(2) Set RANGE switch to 10 Hz - 18 GHz and press RESOLUTION Hz
pushbutton to 10.
NOTE
Throughout the remainder of this check, press RESOLUTION Hz
pushbuttons as necessary.
(3) Set function generator for a sinewave, 10 Hz, 20 mVp-p, 50
output. If TI does
not display a stable indication of applied frequency, perform b below.
NOTE
Allow sufficient time for TI to stabilize between each increment
throughout the following frequency ranges.
(4) Increment function generator frequency from 10 Hz to 10 MHz. If TI does not
display a stable indication at each frequency increment, perform b below.
(5) Disconnect function generator from TI.
(6) Connect signal generator output to TI INPUT 50 .
(7) Set signal generator frequency to 10 MHz and level output to -30 dBm. If TI
does not display a stable indication of applied frequency, perform b below.
(8) Increment signal generator frequency from 10 to 500 MHz. If TI does not display
a stable indication at each frequency increment, perform b below.
(9) Set signal generator frequency to 500 MHz and level output to -35 dBm. If TI
does not display a stable indication of applied frequency, perform b below.
(10) Increment signal generator frequency from 500 MHz to 10 GHz. If TI does not
display a stable indication at each frequency increment, perform b below.
(11) Set signal generator frequency to 10 GHz and level output to -25 dBm. If TI
does not display a stable indication of applied frequency, perform b below.
(12) Increment signal generator frequency from 10 to 18 GHz. If TI does not display a
stable indication at each frequency increment, perform b below.
(13) Set RANGE switch to 250 MHz - 18 GHz.
(14) Set signal generator frequency to 250 MHz and level output to -30 dBm. TI will
display a stable indication of applied frequency.
