U9361C/F/G/M RCal Measurement Guide 53
Making Measurements
Using RCal as a CW Source and Comb Generator
Using RCal as a CW Source and Comb Generator
RCal has a Calibrator Control feature, which allows you to use RCal to
generate both CW and comb signals (If your RCal unit has Option CPX.) with
adjustable frequencies and comb spacings. The power of the output signal
cannot be adjusted within the X-Series software. External attenuators can be
used to adjust the power as needed. CW output power is normally greater than
-10 dBm below 40 GHz and normally greater than -30 dBm above 40 GHz.
RCal calibrator control can be accessed within the X-Series front panel
through Input/Output > Calibrator Control.
Calibrator Control Options:
— Cal Source: Selects the desired RCal module to control
— Output: Toggles the RCal RF output state
— Frequency: Sets the RCal signal frequency
— Frequency Reference: Selects the frequency reference used by the RCal
module. Using the External 10MHz reference is highly recommended.
— Signal: Selects between a CW tone or a comb signal for the RCal output
signal type
— Comb Spacing: Select the spacing of the frequency comb when using a
comb signal
The table below gives minimum and maximum frequency and comb spacing
options when using Calibrator Control:
Minimum Maximum
Frequency 10 MHz 110 GHz
Comb Spacing 100 kHz 1.344 GHz
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