TB 9-6625-2217-35
(4) Record frequency difference meter indication.
(5) Allow at least 24 hours for oscillator stabilization. Frequency difference meter
indication will remain within 1 part in 109 of indication recorded in (4) above.
(6) Adjust autotransformer output to 105 V and allow 2 minutes for stabilization.
(7) Adjust autotransformer output to 125 V and allow 2 minutes for stabilization.
(8)
Adjust autotransformer output to 115 V.
(9) Disconnect frequency difference meter from TI.
b. Adjustments. No further adjustments can be made.
9. Channel A Sensitivity
a. Performance Check
(1) Press TI INPUT A 50Ω/1MΩ key to select 50Ω (LED ON).
(2) Connect signal generator OUTPUT RF to TI INPUT A.
(3) Set signal generator frequency to 160 MHz and amplitude to 1 mV. Slowly
increase signal generator amplitude until TI displays a stable indication at approximately
160 MHz. If signal generator amplitude exceeds 50 mV, perform b below.
(4) Repeat technique of (3) above at 100 MHz and 10 MHz; if signal generator
amplitude exceeds 25 mV, perform b below.
(5) Disconnect TI from signal generator.
(6) Connect TI INPUT A to function generator Function Outputs Unbalanced.
(7) Press TI RESET/CONTINUE key.
(8) Set function generator for a sine wave, 100 kHz, 1 mVp-p, 50Ω output. Slowly
increase function generator amplitude until TI displays a stable indication at
approximately 100 kHz. If function generator amplitude exceeds 71 mVp-p; perform b
below.
(9) Repeat (8) above at 5 kHz and 10 Hz.
(10) Disconnect function generator from TI.
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