TB 9-4920-456-24
(25) Difference between recorded values in steps (22) and (24) above will not be
greater than 0.7 S.
(26) On radar test set, press pushbutton FUNC, ENTR. Wait a second and press
ENTR pushbutton and then press ENTR again, and disconnect all cables.
b. Adjustments. No adjustments can be made.
12. Programmable Attenuator Accuracy Test
a. Performance Check
(1) On TI CODE/ATTEN SELECT keyboard, press ATTEN BOT key.
(2) Enter 990 with CODE/ATTEN SELECT numeric keys and press ENTER key.
TI display will indicate 99.0 dBM*.
(3) On TI CODE/ATTEN SELECT keyboard, press ATTEN TOP key.
(4) Enter 200 with CODE/ATTEN SELECT numeric keys and press ENTER key.
TI display will indicate 20.0 dBM*.
(5) Setup measuring receiver to measure power, Zero and Calibrate the
sensor module.
(6) Connect TI attached 50 Ω load to BOT ANT connector.
(7) Setup signal generator for frequency of 1030 MHz at 0 dBm with RF OUTPUT off.
(8) Connect signal generator external reference output (rear panel) to measuring
receiver external reference input (rear panel).
(9) Connect signal generator RF OUTPUT with a 50 Ω cable to measuring receiver
sensor module.
(10) On signal generator turn RF OUTPUT on.
(11) Setup measuring receiver for Tuned RF Level. Set signal generator to 0.0 dBm.
(12) On signal generator turn RF OUTPUT off.
(13) Disconnect measuring receiver sensor module from signal generator and connect
sensor module to TI TOP ANT.
(14) Connect signal generator RF OUTPUT to TI RF, using a 50 Ω coaxial cable.
(15) On signal generator turn RF OUTPUT on.
