Operating your XG3

This page is used to operate the XG3 using serial commands.

Current Frequency

Enter a frequency in MHz, and the XG3 will change to that frequency. You don't need to enter leading or trailing zeros, just the significant places. The XG3 Utility formats the frequency to 6 decimal places. The low order digit is 1 Hz.

Left click the up or down arrow to change the frequency in "step size" increments. If you hold the mouse button down for a long time, the step size increases. The frequency is sent to the XG3 when you release the mouse button.

Frequency Memories

Press any of the 12 buttons to change to the indicated frequency.

Click Edit Frequency Memories to change the frequencies.

Output Level

Select one of four output levels:

• -107 dBm is about 1 microVolt, approximately S2 or S3.
• -73 dBm is 50 microVolts, S9.
• -33 dBm is 5000 microvolts, or S9 + 40 dB.
• 0 dBm is .22 milliVolts. An external power supply is recommended if you operate the XG3 at the 0 dBm output level for an extended period of time.

The output level selections are accurate only for frequencies up to 200 MHz, as higher frequencies rely on harmonics of the fundamental RF signal.

Enable Output

You may turn the XG3 RF output off or on. When RF output is disabled (unchecked), the XG3 is otherwise fully operational and can be programmed.

Sweep 1, Sweep 2

Click to start a frequency sweep. The sweep values are set in Edit Sweep Memories.

Edit Sweeps

Click to Edit Sweep Memories.

Info

Click to obtain the XG3's current frequency. This might be used during a frequency sweep.