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46 Agilent N5161A/62A/81A/82A/83A MXG Signal Generators User’s Guide
Basic Operation Preliminary
Setting Frequency and Power (Amplitude) Preliminary
Example: Configuring a 700 MHz, −20 dBm Continuous Wave Output
1. Preset the signal generator.
The signal generator displays its maximum specified frequency and minimum power level (the
front panel display areas are shown on page 11).
2. Set the frequency to 700 MHz: Press Freq > 700 > MHz.
The signal generator displays 700 MHz in both the FREQUENCY area of the display and the active
entry area.
3. Set the amplitude to −20 dBm: Press Amptd > –20 > dBm.
The display changes to −20 dBm in the AMPLITUDE area of the display, and the amplitude value
becomes the active entry. Amplitude remains the active function until you press another function
key.
4. Turn on the RF Output: Press RF On/Off.
The RF Output LED lights, and a 700 MHz, −20 dBm CW signal is available at the RF OUTPUT
connector.
Using an External Reference Oscillator
When using an external reference, you can select either narrow or wide bandwidth mode.
For details on each key, use key help as described on page42.
Range: 1 to 50 MHz
For guaranteed operation below 2 MHz, select Narrow bandwidth; in Wide bandwidth,
operation using frequencies below 2 MHz is not guaranteed.
Freq > More
Figure 3-2 illustrates the better close in phase noise of the wide bandwidth mode. If the
external reference you are using is noisy or spurious, use the narrow bandwidth mode.
With Wide bandwidth selected, If you select a frequency less than 2 MHz, the signal
generator displays a warning message.
uses the signal generator’s internal reference oscillator.
uses the REF IN connector to get it’s Frequency Reference. Note: An
error screen is displayed if the reference is not connected or is tuned
to the wrong frequency.
uses the signal generator’s internal reference unless a signal is
present at the rear panel REF IN connector. If an external signal is
present, that signal is used as the reference.