TB 9-6625-2009-24
(e) FREQ SPAN/DIV control to 5 Hz.
(f) SWEEP TIME/DIV control to .1 SEC.
(g) SWEEP MODE switch to MAN.
(2) Connect calibrator to TI INPUT.
(3) Adjust calibrator frequency to 10 kHz at 1 V output amplitude.
(4) Alternately press and release DISPLAY CLEAR WRITE pushbutton while
adjusting SWEEP MODE MANUAL VERNIER control until signal is centered.
(5) Position controls as listed in (a) through (i) below:
(a) ZERO CAL control for a peak display of signal spike.
(b) CAL 10 kHz control for a -1 dB reference indication on display (1.0 dB per
major division).
(c) RESOLUTION BANDWIDTH control to 100 Hz.
(d) ZERO CAL control for a peak display.
Amplitude display will indicate
between -1.5 and -0.5 dB.
(e) RESOLUTION BANDWIDTH control to 30 Hz.
(f) SWEEP MODE MANUAL VERNIER control adjusted slowly for a peak
display. Amplitude display will indicate between -1.5 and -0.5 dB.
(g) DISPLAY CLEAR WRITE pushbutton pressed.
(h) RESOLUTION BANDWIDTH control to 10 Hz.
(i) SWEEP MODE MANUAL VERNIER control adjusted slowly for a peak
display. Amplitude display will indicate between -1.5 and -0.5 dB.
(6) Repeat (5) (g) through (i) above with RESOLUTION BANDWIDTH control at 3 Hz.
(7) Repeat technique of (5) (g) through (i) above with RESOLUTION BANDWIDTH
control at 1 Hz. Amplitude display will indicate between -2 and 0 (zero) dB.
b. Adjustments. No adjustments can be made.
13. Amplitude Accuracy
a. Performance Check
(1) Press AMPLITUDE MODE LOG 10 dB/DIV pushbutton and adjust
RESOLUTION BANDWIDTH control to 10 Hz.
(2) Alternately press and release DISPLAY CLEAR WRITE pushbutton while
adjusting SWEEP MODE MANUAL VERNIER for a signal at center graticule line (a
narrow spike).
(3) Adjust CAL 10 kHz control for a full scale 0 (zero) dB display of signal spike.
(4) Adjust calibrator frequency to 10 kHz and output amplitude to values listed in
table 5. Display will indicate within limits specified.