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NOTE
o
CM
O
I
cc
p~'
As explained in item 7)
and 12),
the FREQUENCY/
AMPLITUDE display indicates the frequency when Lhe FREQ
* key is pressed,
and it indicates the output amplitude
when the AMPTD ^ key is pressed.
That is, whatever is
to be incremented/decremented
(frequency or amplitude)
is automatically indicated on the digital display.
Use the DISPLAY key (T) if it is desired to change the
frequency display to the output amplitude display and
vice versa.
The LED in the DISPLAY key is off for
frequency display and on for output amplitude display.
This key does not normally need to be operated since it
is dominated by the selection of FREQ y key and AMPTD ^
key.
After the display has been changed by hand,
operation of a frequency or amplitude UP/DOWN key
returns the current display to the original display.
The MODIFY control
only varies the current
display.
The output amplitude operation described above will also be used
for level measurement below.
Level measurement
15) Press the LEVEL key of the MEASUREMENT keys (T) with the LED in the
key on.
The analyzer is now set to measure voltage levels.
(Because the LEVEL key was pressed in step 6)
and remains there,
this instrument provides' the level measurement function with which
you have been able to measure the oscillator output level with the
measurement setup in Fig. 4-1.)
16)
Use the RANGING key
(l4)
to determine whether the indicator range
is switched automatically or manually.
The lamp of this key turns
on or off alternately each time it is pressed.
Turn off the
RANGING key to select AUTO.
One of the 16 meter range indicators
will light and indicates the range of the meter (j^) to read the
input level.
17)
Keep the REF ADJ knob
(lo)
depressed.
18) Read the levels by operating the output amplitude of the use .Lila tor
according to steps 13)
and 14).
4-11
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