YENRA: AUDIO AND MODULATION MEASUREMENT RECORD
Guide: https://yenra.com/audio-and-modulation-analyzers/
Purpose: record one measurement and the conditions needed to reproduce it.
Use with the matching equipment manuals and an approved test arrangement.
This worksheet provides no equipment limits or universal pass/fail threshold.

Question / design requirement:
Acceptance criterion and its source:
Date, operator, location:
Device / model / hardware / firmware:
Analyzer / options / firmware / calibration status:
Signal source / model / settings:
Connection point, impedance, load, adapters:
Maximum expected output and documented permitted input:
DC limits, attenuation/coupler/load arrangement and manual reference:
Carrier frequency (Hz):
Test-tone frequency (Hz):
Modulation type and level (peak/RMS/depth definition):
RF or audio input level (value and unit):
Measurement bandwidth / audio filtering:
Detector / averaging / settling:
Measured quantity / result / unit:
Uncertainty or repeatability:
Overload or other instrument indications:
Repeat result:
Changed condition and reason:
Interpretation / unresolved question:
Raw log or screenshot filename:

HYPOTHETICAL ARITHMETIC ONLY
Carrier center 100.000 MHz; 1 kHz tone; peak deviation +/-2.5 kHz.
Modulation index = 2.5 / 1 = 2.5.
Peak-to-peak excursion = 5 kHz.
Idealized instantaneous limits = 99.9975 and 100.0025 MHz.
This is not occupied bandwidth or a channel/transmission recommendation.
Compare SINAD or THD only with compatible filtering and test conditions.
Source context: Keysight AM/FM measurement documentation linked in the guide.