User Manual LW120
Figure
10 MHz Ref
Frequency
The
l
references. The LW120 has two reference options: Standard –
100
nal reference input is provided
for applications requiring better accuracy and stability. Click on the
Internal button to select the Internal reference, or the External button
to a
5-48. The Standard Waveforms Panel
10 MHz Ref group provides selection between internal or externa
ppm and TCXO – 1ppm. An exter
ctivate the external reference input.
WARNING
By selecting an external reference you are disabling the
internal reference circuit. If you do not have a 10 MHz
reference connected to the instrument, the output will
generate erroneous frequencies.
The button in the Frequency group lets you program the output
frequency of the selected waveform shape. The frequency parameter
may be modified when the LED illuminates. You can use the dial,
keyboard, or the [
↑
] [
↓
} keys to adjust the readout to the required
setting. After you modify the reading, press Execute to update the
LW120 with the new reading.
Note
Normal color of the digital reading is dark blue. If you
modify the reading, the color changes to a lighter shade of
blue, indicating that the LW120 has not been updated yet
with the new parameter. Pressing Execute will update the
instrument and will restore the color of the digital readout
to dark blue, indicating that the displayed value is the
same as the generator setting.
ArbExplorer 5-10
