Astro-Med PM-13 Overview Astro-Med, Inc. PM-13 Performance Characteristics: Form Factor: Module (proprietary interface/bus) Minimum Voltage: 36.99 uV Maximum Voltage: 126.99 uV Maximum Frequency: 100 kHz Input Impedance: 8 MOhm Astro-Med, Inc. PM-13 Measurements/Features: Max input 10 VDC or AC peak Status reporting Single-ended Input type 5 Range attenuation DC or RMS measurement Auto-calibration Non-linearity +/-0.5 dB Input Range 316uV to 10V