Agilent Technologies, Inc. N5181B-UNT AM, FM, phase modulation

AM features

• Log mode: up to 40 dB
• Linear mode: 100% maximum depth

FM features

• DC to 7 MHz modulation rates
• 16 MHz maximum deviation

M features

• DC to 4 MHz modulation rates
• 8 rad maximum deviation

Other features

• Simultaneously enable multiple modulation sources
• Internal sine wave generator for driving AM, FM, and M

Flexible analog modulation

Option UNT can generate internally- or externally-driven AM, FM, and M signals.

Typical application

Option UNT is recommended for testing analog communications systems with AM, FM or PM, simulating unwanted modulation on a carrier, or interfering signals when performing receiver tests. Additionally, Option UNT simulates telemetry tones for satellite receiver tests requiring FM or satellite communication traffic with the addition of an external modulation source for frequency shift keying (FSK).

When UNT is purchased together with narrow pulse modulation (Option UNW), pulse train generator (Option 320) and multifunction generator (Option 303) simultaneous AM, FM, pulse modulation with variable PRI is possible. Ideal for radar receiver tests to simulate complex real-world threats, or frequency-stable chirp signals to test radar receiver range resolution in one instrument.

This option can be added as a product upgrade.