Offsetting A Frequency Measurement; Frequency Offset Example - Keysight 53147A Operating And Programming Manual

2 Operating Your Instrument

Offsetting a Frequency Measurement

You can use the Frequency Offset (Freq Offset) function to add or subtract a
constant value to/from a frequency measurement. For example, you can use an
offset to compensate for a systematic error or to display the difference in
frequency between two signals.
To display an offset frequency measurement, you need to set the value and sign
(+/–) of the offset and to turn the Frequency Offset function on.

Frequency Offset Example

1 Connect a cable from the 10 MHz reference output on the back panel to the
2 Press the Shift key, and then press the Freq Offset (Resol) key in the MODIFY
3 Use the left- and right-arrow keys to move the focus to the d igit(s) in the
90
Channel 1 input connector, and press the Chan Select key (if necessary) to
activate Channel 1.
The display should look like this:
GHz
Ch 1
Rel Freq
section of the front panel.
The Shift annunciator activates when you press the Shift key. When you press
the Freq Offset key, the Shift annunciator disappears, and the Freq Offset
annunciator at the left side of the display activates.
frequency-offset d isplay that you need to ad just to enter the offset value,
and then use the up- and down-arrow keys to ad just the value for each
d igit. Enter a value of 500 Hz.
The flashing digit is the digit that currently has the focus. This means that you
can change the value of the flashing digit using the up- and down-arrow keys.
Keysight 53147A/148A/149A Operating and Programming Guide
MHz kHz Hz