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NOTE —
5
|
}
i
3
/
The frequency range does not change in the case when the
next step will be supposed to cause the frequency beyond
the specified limits from 5 Hz to 159.9 kHz.
Similar
operation will be observed in frequency up/down key¬
stroke except the least significant digit.
That is,
if
the next step of incrementing or decrementing a value
with these keys will be supposed to cause it to overflow
the alio viable frequency range,
the up/down operation
would stop.
Proceed to the next operation after setting the frequency to 1.000
kHz.
Output amplitude setting
12) Press the AMPTD * key of the MODE select keys
@
with the LED in
the key on.
This operation enables the normal up/down operation of
the output amplitude of the oscillator.
The FREQUENCY/AMPLITUDE
indicator @ displays the level of the output signal supplied to
the output connector
(Si) .
_NOTE
-4-—---'
The analyzer does not display a value as measured by the
digital voltmeter but rather the output level reduced by
the built-in attenuator from the maximum oscillator
output, which is maintained at a constant amplitude.
13) As with the frequency operation, the three amplitude-up keys
(23)
and three amplitude-down keys @
or the MODIFY control
@
can be
used for increasing or decreasing the displayed value.
The
difference is that the range -up /down keys
(25)
and
(26)
are
disabled.
14) Determine whether the output signal level is displayed by the
voltage
(dE)
(0 dB - 1 V rms into 600
Q
load)
or by the available
power
(dBm)
(600 Q, referred to 1 mW) by the amplitude unit select
switch
(29) .
This is shown by the amplitude unit indicators (T) to
the right of the digital display.
Check that the display of output signal level can be varied from
6.2 to- -73.7 dBm and 4,0 to -75.9 dB.
4-10
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