3900 Platform Specifications
Subject to Export Control, see Cover Page for details.
B-12
Audio & Modulation Measurements (cont)
Distortion Meter
Range
0.0% to 100.0%
Resolution
0.1%
Accuracy
< ±0.5% (Distortion 1% to 10%, 5 kHz LP AF Filter)
< ±1.0% (Distortion 10% to 20%, 5 kHz LP AF Filter)
Signal Frequency
300 Hz to 5 kHz (Entry Range 0 to 24,000 Hz)
Signal Level
3901 / 3902
0.1 to 8 Vrms
3920
0.1 to 30 Vrms
Front Panel Inputs
Audio 1 or 2
Unbalanced, Chassis reference
Audio 1 and 2
Balanced, 600 Ω differential input
Impedance
Hi-Z (> 10 k Ω) Unbalanced input
600 Ω Unbalanced input (8 Vrms Maximum input*)
600 Ω Balanced input
*600 Ω Unbalanced input auto-switches to Hi-Z @ 8 Vrms (3920 only)
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