TB 6-6625-2329-24
(10) Press PARAMETERRF pushbutton, enter DATA 300 numerical value, and
press ENTER/UNITS MHz key.
(11) Press spectrum analyzer pushbuttons as listed in (a) through (d) below:
Preset.
(a)
AMPLITUDE, Ref Level, 1, 0, dBm.
(b)
FREQUENCY, Center Freq, 3, 0, 0, MHz.
(c)
SPAN, 1, MHz.
(d)
(12) Press SHIFT, PARAMETER SPECIAL
DATA
19
pushbutton,
enter
numerical value, and press ENTER/UNITS mV key.
(13) Press spectrum analyzer pushbuttons and adjust controls as listed in (a) through
(j) below:
BW/Avg, Res BW, 1, 0, 0, kHz.
(a)
Video BW, 1, 0, 0, kHz.
(b)
MARKER.
(c)
SPAN, 0, Hz.
(d)
SWEEP, Sweep Time, 5, 0, mS.
(e)
Trig, Video, 1, 0, dBm.
(f)
MARKER
(g)
Adjust rotary control to place Mkr1 at top of square wave.
(h)
MARKER, Delta.
(i)
Adjust rotary control to place Mkr at bottom of square wave.
(j)
(14) Using spectrum analyzer, measure top to bottom of square wave in dB. Pulse
envelope on/off ratio will indicate within limits specified in table 29.
Table 29. Pulse Modulation On/Off Ratio
Spectrum analyzer
> dB
70
(15) Press SHIFT, PARAMETERSPECIAL pushbuttons, enter DATA 20
numerical value, and press ENTER/UNITS mV key.
(16) Press PARAMETERRF pushbutton, enter DATA 1000 numerical value, and
press ENTER/UNITS MHz key.
(17) Press spectrum analyzer pushbuttons as listed in (a) through (d) below:
Preset.
(a)
AMPLITUDE, Ref Level, 1, 0, dBm.
(b)
FREQUENCY, Center Freq, 1, GHz.
(c)
SPAN, 1, MHz.
(d)
(18) Press SHIFT, PARAMETERSPECIAL pushbuttons, enter DATA 19
numerical value, and press ENTER/UNITS mV key.
(19) Press spectrum analyzer pushbuttons and adjust controls as listed in (a) through
(j) below:
27