10 Mhz Ref; Frequency - LeCroy LW110 User Manual

10 MHz Ref

Frequency

ArbExplorer 5-10
Figure 5-48. The Standard Waveforms Panel
The 10 MHz Ref group provides selection between internal or externa
references. The LW120 has two reference options: Standard –
100 ppm and TCXO – 1ppm. An exter
for applications requiring better accuracy and stability. Click on the
Internal button to select the Internal reference, or the External button
to a ctivate the external reference input.
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.
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.
User Manual LW120
nal reference input is provided
WARNING
Note
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