Users Guide
QuickSyn Lite Frequency Synthesizer
27 of 40
ni-microwavecomponents.com
Reference Indicators
The Ext. Detect indicator will illuminate
to indicate when the synthesizer has detected an external reference
source. The Int. Detect indicator will illuminate to indicate the
internal reference source is selected. The Lock indicator will
illuminate to indicate the synthesizer has locked to the source.
Reference Source
These radio buttons are used to select
between External and Internal reference sources. Internal is the
default selection.
• When External is selected, the synthesizer will detect and lock
to the user-supplied 10 MHz external signal.
• When Internal is selected, the synthesizer will lock to its
temperature-controlled crystal oscillator.
To lock to an external reference, connect an external reference
source to the REF IN connector located on the synthesizer’s front
panel and select the External button.
Internal Reference
The Output button enables the user to choose
between reference power output on or off. The button is illuminated
when on and is on by default. When the Output button is off, the
signal is muted and the button is no longer illuminated.
Temperature, Frequency, Reference
These settings and
status indicators (see Figure 36) located near the bottom of the Main
Control panel indicate the synthesizer’s internal temperature and
provide the currently selected frequency value and reference type,
The values in these indicators will update as settings and temperature
change.
NOTE
External reference frequency input must be within 10 MHz ±2 ppm.
Figure 36
Settings and status indicators