sony precision technology pc208a instrumentation cassette recorder built-in digital signal proce double bandwidth record multiband modes multiple power source selectable test signal error monitoring highly accu. int.ch.phase diff multiple remote control functi remote control:rs-232c form factor benchtop type digital number of channels 8 ch number of bits 16 bits minimum voltage 0.5 v maximum voltage 20 v maximum frequency 20 khz maximum dynamic range 80 db signal to noise ratio 78 db input coupling dc input impedance 100 kohm minimum output voltage 1 v maximum output voltage 3 v output impedance 47 ohm