MG443B The MG443B is carefully designed. Its output level is highly stable, so it can be used for applications within the telecommunications industry without the need for a separate standard level meter. Frequency Range: 10 Hz to 30 MHz Features •Wide frequency range with 1 Hz resolution •As many as 20 panel settings can be memorized; memory sweep capability •High output level characteristics: Flatness: + 0.07 dB (0° to 50°C) Level accuracy: + 0.15 dB (0° to 50°C) •High precision output level setting of 0.01 dB •Continuous output level variable within approximately 4.5 dB •Variety of output impedances Unbalanced: 50, 75 Ohms Balanced: 75, 135, 150, 600 Ohms