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TB 9-6625-2049-35
14
(6) Adjust frequency counter sample rate control to HOLD and press RESET
pushbutton. Record frequency counter indication.
(7) Press ENTRY PHASE key and enter -1 deg using DATA keys.
(8) Press frequency counter RESET pushbutton and record frequency counter
indication.
(9) Determine the difference between indication recorded in (6) above and indication
recorded in (8) above. The difference will be between 22.22 and 33.34 ns.
(10) Enter -10 deg using DATA keys.
(11) Press frequency counter RESET pushbutton and record frequency counter
indication.
(12) Determine the difference between indication recorded in (6) above and indication
recorded in (11) above. The difference will be between 272.22 and 283.34 ns.
(13) Enter -100 deg using DATA keys.
(14) Press frequency counter RESET pushbutton and record frequency counter
indication.
(15) Determine the difference between indication recorded in (6) above and indication
recorded in (14) above. The difference will be between 2722.22 and 2783.34 ns.
b. Adjustments. No adjustments can be made.
14. Sine wave Amplitude and Flatness
a. Performance Check
(1) Connect TI SIGNAL to multimeter INPUT HI and LO using 50Ω feedthrough
termination.
(2) Press keys and enter values using DATA keys as listed in (a) through (i) below:
(a) SIGNAL off (option 002 not lit).
(b) ENTRY DC OFFSET.
(c) 0 VOLT.
(d) FUNCTION sine wave.
(e) ENTRY AMPTD.
(f) 3.536 V RMS.
(g) ENTRY FREQ.
(h) 100 Hz.
(i) AMPTD CAL.
(3) Multimeter will indicate between 3.495 and 3.577 V ac.
(4) Repeat technique of (2)(e) through (i) and (3) above using TI settings and
multimeter indications listed in table 3.