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SECTIOhr 3
the cursor will not be displayed
when the step
size is x+2 or x4.10.
This key moves the cursor to the left by one digit
each time it is pressed. Note that cursor will not
be displayed
when the step size is x+2 or x+10.
This key mcwes the cursor to the right by one dig-
it each time it is pressed. Note that cursorwilInot
be displayed when the step size is x+2 or x-10.
STEP SIZE W'IDOWN
step size)
STEP SIZE changes the MODIFY
knob UP/
DOWN
step size. For parameters with
values
that can be changed using variable step sizes, the
step size will change in the following
order each
time this key is pressed: +I i5 x+2 x-10 ___
When the step size is j11 ori5, the digit indicated
by the flashing underline
cursor changes by 1 or
by 5 when the MODIFY
knob is rotated. When
the step size is x+2 or x+10, the cursor disap-
pears, and the entire display
value can be di-
vided or multiplied
by 2 or by 10 by rotating the
MODIFY
knob.
Miscellaneous
Keys
AM (Amplitude modulation)
[MODIFY]
The AM key allows
you to turn
amplitude
modulation
on or off (l= on; O=off). Note that the
modulation
signal is applied to the front panel
AMIN
BNC jack. When the modulation
signal is
OV, or when the modulation
depth is 0%, turning
on amplitude
modulation
reduces the p-p ampli-
tude of the output waveform
to one-half its nor-
mal value (the value when amplitide
modula-
tion is turned off). The output amplitude
is the
normal,
displayed
amplitude
value when the
modulation
depth is 100%. Refer to paragraph
3.5.6 for more information.
r
(Beep sound)
[MODIFY]
This key controls the beep that sounds when you
press front panel keys and when errors occur.
You can turn the beep OFF (0) or ON (1).
n DUTY (Squaw-wave duty cyclei
[MODIFY1 [SIZEI
The n
DUTY key allows you to program
the
square-wave
duty cycle. The allowed duty cycle
ranges from 5.0% to 95.0%.
Two duty-cycle
modes are available: 50% fixed
and variable. In the variable mode, the upper fre-
quency limit for square waves is restricted
to
1OOkHz even if the duty cycle is set at 50%. Refer
to paragraph 3.5.8 for details.
FXD50 (Fixed 50% duty cycle)
IsKIm
This key fixes the square-wave duty cycle at 50%.
The upper frequency
limit for square waves is
1.2MHz when the duty cycle is fixed at 50%. See
paragraph 3.5.8.
SHIFT
The SHIFT key adds a secondary
function
to
many other front panel keys. Those keys that
have shifted functions have those functions rep-
resented on the lower part of each key using the
same color as the SHIFT key. Keys with shifted
functions
in&de
CTR 4 , MKR, GPIB, FXDSO,
and PRST.
When
the SHIFT key is first pressed, the unit en-
ters the shift mode, and the liquid crystal display
indicates "SHIFT"
in the upper left corner. The
shift mode is canceled when any key including
the SHIFT key is pressed (if a key with a shift
function
is pressed, the unit enters that mode;
otherwise, it returns to the mode it was in before
SHIFT was pressed).
LOCAL (Return to locnl)
LOCAL
cancels remote and returns the instru-
ment to thelocalmodewhenusedovertheGPIB.
When the instrument
is in remote (as indicated
by "RMT" in the upper left comer of the display),
parameter setting is disabled, but you can still
display
parameters
by pressing
appropriate
front panel keys.
3-8
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