The Marconi IFR Aeroflex 2957 Signal Generator delivers precise signal generation from 9 kHz to 2.4 GHz with 1 Hz frequency resolution and output power spanning -140 dBm to +13 dBm. This instrument integrates multiple modulation schemes—AM, FM, phase, pulse, and FSK with 3.9 kHz Bessel filtering—alongside two-tone modulation sources and linear/logarithmic sweep capabilities. Built for research, development, and production environments requiring accurate, stable signal generation across extended frequency bands.
Technical Specifications
• Frequency Range: 9 kHz to 2.4 GHz
• Frequency Resolution: 1 Hz
• Output Power Level: -140 dBm to +13 dBm
• Level Resolution: 0.1 dB
• Level Accuracy: ±2 dB (all levels above -127 dBm)
• Modulation: AM, FM, phase, pulse, FSK (3.9 kHz Bessel filtered)
• Modulation Sources: Sine, triangular, square two-tone; log and linear sweep
– Audio Measurement Options (2967 Model)
• Audio Frequency Meter: 10 Hz to 500 kHz, 6-digit display
• Frequency Resolution: 0.1 Hz (10 Hz–5 kHz), 1 Hz (5–50 kHz), 10 Hz (50–500 kHz)
• Audio SINAD Meter: 1 kHz default, selectable to 20 kHz; 5–50 dB range
• SINAD Resolution: 0.1 dB (<20 dB), 0.2 dB (<25 dB)
– Modulation Accuracy (2967 Model)
• AM: ±4% ±1 digit (1 kHz); ±6% ±1 digit (30 Hz–10 kHz); ±8% ±1 digit (10–20 kHz)
• FM: <1% at 1 kHz (≤30% depth); <2% (100 Hz–20 kHz, ≤85% depth); ±3–10% ±1 digit (20 Hz–75 kHz)
• Phase: <0.5% (250 Hz–5 kHz); <1% (50 Hz–20 kHz)
– Key Features
• 1 Hz frequency resolution across full 9 kHz–2.4 GHz span
• Five independent modulation modes with flexible two-tone sourcing
• Linear and logarithmic sweep functions for rapid characterization
• Optional audio measurement suite with peak-hold indication and SINAD analysis
– Typical Applications
• Radio receiver and transmitter alignment
• Audio codec and modulation quality assessment
• Wideband transceiver verification
• Production test and acceptance protocols
• Communications system development and validation
