TB 9-6625-1978-24
a. Performance Check
(1) Disconnect external time base input, if applicable, from rear panel 10 MHz
jack of TI, and set TIME BASE INT-EXT switch to INT.
meter REF INPUT.
(3) Connect TI TIME BASE 10 MHz (rear panel) to frequency difference meter
SIG INPUT.
(4) Adjust TCX0 (fig. 1) for frequency difference meter indication of less than 1
part in 109.
(5) Disconnect frequency difference meter from TI.
(6) Replace external time base input if removed in (1) above and set TIME BASE
INT-EXT switch to EXT.
b. Adjustments. No further adjustments can be made.
Band I Input Sensitivity
a. Performance Check
(1) Position controls as listed in (a) through (c) below:
(a) SAMPLE RATE control fully ccw.
(b) BAND SELECT switch to 20 Hz - 135 MHz.
(c) RESOLUTION pushbuttons as necessary.
(2) C o n n e c t f u n c t i o n g e n e r a t o r F u n c t i o n O u t p u t s U n b a l a n c e d t o T I
2 0 H z - 135 MHz 1 MEG input using a 50 feedthrough termination.
(3) Set function generator for a sine wave, 20 Hz, 71 mVp-p, 50
output. TI will
display a stable count of applied frequency.
(4) Adjust function generator frequency from 20 Hz to 10 MHz. TI will display a
stable count of applied frequency.
(5) Disconnect function generator and 50
feedthrough termination from TI.
(6) Connect signal generator RF Output to TI 20 Hz - 135 MHz 1 MEG input
using a 50 feedthrough termination.
(7) Set signal generator frequency to 10 MHz and level output to 19 dBm. TI will
display a stable count of applied frequency.
(8) Adjust signal generator frequency from 10 to 135 MHz. TI will display a stable
count of applied frequency.
(9) Disconnect signal generator and 50
feedthrough termination from TI.
(10) Set BAND SELECT switch to 10 MHz - 300 MHz.
(11) Connect signal generator RF Output to TI 10 MHz - 300 MHz 50 OHM input.