For cass. tape
Function / mono /		recording/play-back/erase
Inductance, Kombi side ( 1kHz, 50 mV )	mH	140±25 %
Inductance, Erase side ( 1kHz, 50 mV )	mH	10±25 %
Impedance, Kombi side ( 1kHz, 50 mV )	Ω	1200±30 %
Impedance, Erase side ( 30 kHz, 5 V )	kΩ	23±30 %
DC Resistance, Kombi side ( DC 2 V )	Ω	300±10 %
DC Resistance, Erase side ( DC 2 V )	Ω	140±10 %
Play-back with BASF IEC 94/2 referency tape
Measuring frequency	kHz	6,3 k / 1 k
Sensitivity	µV	900±2 dB
Frequency response	dB	2±3
Tape speed	cm/s	4.75
Measuring the recording/play-back function with BASF IEC (R723 DG) measuring tape
Bias current AC	µA	400±30 %
Recording current	µA	90
Sensitivity ( 1 kHz )	µV	750±2 dB
Frequency response ( 3,15 kHz / 1 kHz )	dB	-6±3
Totally harmonic distortion ( 315 Hz )	%	max.:11
Magnetic shielding ( 70 A/M, 125 Hz )	mV	max.:5
Erase
Erase current DC	mA	16±20 %
Tape speed	cm/s	2.38
Erase damping ( 1 kHz )	dB	min.:50
Earth resistances ( 5 V DC )	kΩ	max.:50
Insulation resistance ( 250 V DC )	MΩ	min.:1
Pole material		Recovac