User`s guide
Table Of Contents
- Overview
- Getting Started
- System Setting
- Making Measurements
- Measuring Multiple Signals
- Measuring a Low-Level Signal
- Improving Frequency Resolution and Accuracy
- Making Distortion Measurements
- One-button Power Measurement
- Making a Stimulus Response Transmission Measurement
- Measuring Stop Band Attenuation of a Low-pass Filter
- Making a Reflection Calibration Measurement
- Measuring Return Loss Using the Reflection Calibration Routine
- Making an Average Power Measurement
- Key Reference
- SCPI Command Reference
- Error Messages
- Menu Map
5Key Reference
80 N9340A User’s Guide
Ref Offset
Key access: [AMPTD] > {Ref Offset}
Adds an offset value, which ranges from - 327.6 dB
to
+327.6 dB, to the displayed reference level.
Reference- level offsets are used when gain or loss
occurs between a device under test and the
analyzer input. Thus, the signal level measured by
the analyzer may be referred to as the level at the
input of an external amplitude conversion device.
When an amplitude offset is entered, its value
appears in the lower left corner of the display.
Y Axis Units
Key access: [AMPTD] > {Y Axis Units}
Sets the amplitude units.
NOTE
Reference-level offsets may only be entered using the
numeric keypad. Entering an offset does not affect the trace or
the attenuation value.
NOTE
Amplitude units are maintained for both logarithmic and linear
modes depending on the Scale Type setting.