UTS7000A-AMA Analog Demodulation Measurement Option for UTS7000A Series
Overview
UTS7000A-AMA is the analog demodulation analysis software-license option for the UTS7000A signal analyzer platform. The license adds AM, FM, and PM demodulation with measurement of modulation depth (AM), frequency deviation (FM), phase deviation (PM), carrier power, SINAD, modulation distortion, and total harmonic distortion.
AMA operates as a dedicated measurement mode on the chassis. The mode supports a demodulated-waveform window (time domain), an AF spectrum window (frequency domain), and a numeric result window displaying the active demodulation parameters. The license is purchased against the chassis serial number, installed via the chassis Option Install menu, and is permanent for the life of the instrument.
Key Features
- AM, FM, and PM demodulation — Three demodulation modes selectable from the option menu
- Demodulation frequency range — 2 MHz to 40 GHz carrier frequency
- Modulation rate range — 20 Hz to 100 kHz on all three modes
- AM modulation depth measurement — 5% to 95% range, ±4% accuracy (Nom.)
- FM frequency offset measurement — 1 kHz to 400 kHz range, ±4% accuracy (Nom.)
- PM phase deviation measurement — 0.2 to 6.28 rad range, ±4% accuracy (Nom.)
- Time-domain, frequency-domain, and numeric result displays — All three views simultaneously
- Lifetime License Activation — activate once, owned for the life of the instrument. No subscriptions, no renewals, no maintenance fees.
What Analog Demodulation Adds
The AMA option configures the instrument as an analog demodulation analyzer. Specifications are taken from the UTS7000A Series datasheet.
| Specification | Value |
|---|---|
| Demodulation modes | AM, FM, PM |
| Carrier frequency range | 2 MHz to 40 GHz |
| Carrier power accuracy | ±2 dB (Nom.) |
| Input power range | −30 dBm to +20 dBm (automatic attenuation) |
| Modulation rate (all modes) | 20 Hz to 100 kHz |
| Modulation rate accuracy | 1 Hz (Nom.) below 1 kHz; <0.1% of modulation rate above 1 kHz |
| AM modulation depth range | 5% to 95% |
| AM accuracy | ±4% (Nom.) |
| FM frequency offset range | 1 kHz to 400 kHz |
| FM accuracy | ±4% (Nom.) |
| PM phase deviation range | 0.2 to 6.28 rad |
| PM accuracy | ±4% (Nom.) |
| Result outputs | Modulation depth/deviation, carrier power, modulation frequency, SINAD, modulation distortion, THD |
| Operating mode | Dedicated analog demodulation mode on the chassis |
When You Need This Option
The option fits the following measurement workflows:
- AM/FM/PM transmitter characterization — Modulation depth, frequency deviation, or phase deviation verification on broadcast, two-way radio, telemetry, and aviation-band transmitters.
- Audio-band modulation quality — SINAD and THD measurements on the demodulated audio for receiver figure-of-merit testing and transmitter audio-chain quality assessment.
- Production-line modulator QC — Dedicated AM/FM/PM mode with standing modulation-depth or deviation readouts for repeatable per-unit verification on manufacturing test stations.
- Legacy analog-radio service and repair — AM and FM demodulation analysis on legacy two-way radios, public-safety analog systems, and broadcast-equipment alignment work.
Compatibility
The option installs as a software license on any UTS7000A series chassis. Compatibility:
| Chassis variant | Option install |
|---|---|
| UTS7000A — Wide-Band Configuration (40 MHz baseline) | |
| UTS7013A — 2 Hz to 13.6 GHz | Supported |
| UTS7026A — 2 Hz to 26.5 GHz | Supported |
| UTS7032A — 2 Hz to 32 GHz | Supported |
| UTS7040A — 2 Hz to 40 GHz | Supported |
| UTS7000A–NB — Narrow-Band Configuration (20 MHz fixed) | |
| UTS7013A–NB — 2 Hz to 13.6 GHz | Supported |
| UTS7026A–NB — 2 Hz to 26.5 GHz | Supported |
| UTS7032A–NB — 2 Hz to 32 GHz | Supported |
| UTS7040A–NB — 2 Hz to 40 GHz | Supported |
Frequently Asked Questions
Are AM, FM, and PM included together or licensed separately?
The three demodulation modes — AM, FM, and PM — are included together under the single UTS7000A-AMA license. There is no separate per-mode licensing.
How is the license installed?
The license is purchased against the chassis serial number, registered on the UNI-T website to obtain the license file, and installed via the chassis Option Install menu using a USB storage device. Refer to the chassis User Manual for the full step-by-step procedure.
Is the license permanent, or does it require renewal?
The license is permanent — a one-time purchase that remains active for the life of the instrument. There are no subscription fees, no annual renewals, and no expiration date.
Can the option be installed on a UTS7000A–NB narrow-band chassis?
Yes. Measurement function options install on all UTS7000A chassis variants including the narrow-band (–NB) configurations. The option installs and operates independently of the chassis bandwidth configuration.
