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on the LCD as shown in figure 7. The top portion of the LCD
displays the offset value with a digit blinking along with a %
symbol. The new Duty ratio value is entered here. The Offset
value may be entered using the encoder dial or the keyboard as
explained in the paragraphs on Frequency and Amplitude. An
offset may be added -100% to + 100% of the waveform value.
DC OFFSET = 0. %
sin
1.0000 kHz 100mV
Fig 7
3.6 Mode Button
Pressing the Mode" button displays the modulation selection
menu as shown in Fig 8. The first line on LCD displays the
current modulation and in this case Continuous wave (no
modulation) is selected and is also the default modulation. The
second line displays the modulations that may be selected with
a corresponding soft button. The soft button when pressed the
first time displays the selected modulation on the top line,
pressing it again displays the modulation setup menu.
Mode:
CW
Fig 8
The modulations that can be selected in figure 8 are: Linear
Sweep (Lin) Log sweep (Log), Frequency shift key (fsk). The
soft button that corresponds to the > symbol when pressed
Continuous
Lin
Log
fsk
13
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