Noise measurements: from -1 dBm to +121 dBm Input Impedance: 75, 135, 150, 600, or 900-ohms industrial
The HP 3555B Transmission & Noise Measuring Set conforms with Bell System requirements and makes noise measurements from -1 dBm to +121 dBm. Noise measurements: from -1 dBm to +121 dBm. Terminated input impedance: 75, 135, 150, 600, or 900-ohms, balanced.