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SECTION 3
Operation
For amplitude, which has several unit value options, se-
lect and press the appropriate units key to complete the
entry process. For phase and marker phase parameters,
which have only single parameter units, press any one of
the ENTER keys to complete entry.
Regardless of the number of digits for the entered value
and the size of the units (set, msec, V, mV, etc.), the pre-
determined number of digits, resolution, and units will
be properly adjusted and displayed. When values below
the display resolution are entered with the numeric keys,
a beep tone will sound, an error message will be dis-
played. and the display will return to the previous value.
Internal settings will remain unchanged when an error
condition occurs.
Example: Change amplitude from a existing value of
+178" to a new value, -98", and then correct an erroneous
entry of "95."
Key
Operation
1 Display
Presentation
I
Press PHASE
Existing parameter, "178 deg", will
be displayed.
Press 9
The value of the key pressed, (9),
will appear.
Press 5
The display now shows erroneous
figure: "95".
Press Phase
The display again indicates the
original setting of "178 deg".
Press -I-
Display indicates "-". NOTE: This
key is a character toggle between
N+N and ',-Me
Press 9
The display indicates "-9".
Press 8
The display indicates the desired
"-98".
Press deg
The display indicates the correct
value "-98 deg".
Press DSPL
Entry is complete, and display
shows main parameters, with
desired phase values.
3.4.2
Setting Parameters with the
MODIFY Controls
You can change parameter values with the MODIFY
knob and cursor keys in the following cases:
1. The name of the parameter to be changed is blinking
in the upper part of the liquid crystal display.
The parameter name indicated in the upper part of
the liquid crystal display will not flash when the unit
is in the GPIB remote, or when the keyboard lock is
on.
2. In the situation in step 1, the existing value specified
is displayed and the modification step size is pre-
sented in the upper right corner of the liquid crystal
display.
Modification step size will not be displayed during
numeric key input. Modification
cannot be per-
formed during numeric input.
For parameters which are selected with one numeric
character, such as waveform and oscillation mode, the
flashing cursor is fixed below the numeric character and
cannot be moved. The step size is fixed to H and cannot
be changed.
For parameters that require units, such as amplitude, the
step size can be changed by pressing the STEP SIZE key.
It is not necessary to use a units key when changing the
value with the MODIFY knob. When modifying an exist-
ing value, the modified value will automatically replace
the old parameter value, and the existing units will re-
main unchanged.
When the step size is indicated in the right-most position
of the liquid crystal display, each time the STEP SIZE key
is pressed the step size will change in the following order
fl x+2 x+10 rtl .
When the step size is rtl, you can specify the digit for UP/
DOWN adjustment by placing the flashing underline
cursor under the appropriate digit with the cursor keys,
and turning the MODIFY knob to the right or left. When
the step size is x+2 or x+10, the cursor will disappear, and
you can multiply or divide the entire value by two or ten.
Simply turn the MODIFY knob to the right or left. The
step size and the existing cursor position will be stored
with the respective parameters when those parameters
are stored in memory.
Changing
a
value by modification will never result in an
error because the modification process automatically
limits parameter adjustments to the maximum allowed
range for that particular parameter. The MODIFY keys
cannot be used to store or recall memory locations, or to
set the GPIB address and delimiter; only the numeric
keys can be used to program these operating modes.
3-16
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