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When an offset is entered, its value is displayed on the CRT
DATA entry from the keyboard can be in Hz, kHz, MHz, or GHz for frequency and dB, - dB, mV and FV for
amplitude. The amplitude offset readout is always in dB. An entry in voltage can be made and will be converted to
The offset range for frequency is - 99.999999990 to + 99.999999999 GHz in 1 Hz steps. The amplitude offset
range is greater than f 100 dB in 0.1 dB steps. Least significant digits will be truncated for frequency and
amplitude offset entries.
Example
An 102.6 MHz up converter with 12.7 dB attenuation is placed between a signal source and the spectrum
analyzer. The offsets can be set so that the CRT display shows the trace referenced to the signal as input to the
converter.
Amplitude offset is entered as a positive value to com-
pensate (offset) the loss of the converter.
Note that the original REF LEVEL of 0 dBm is now
changed to 12.7 dBm also.
92 Manual Operation
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