For cass. tape |
Function / monó / |
|
recording/play-back |
Impedance ( 1 kHz ) |
Ω |
1050±25 % |
Impedance ( 35 kHz ) |
Ω |
18 k±30 % |
DC resistance |
Ω |
410±15 % |
Inductance |
mH |
140±25 % |
Play-back with BASF IEC 94/2 reference tape
|
Sensitivity ( 1 kHz ) |
µV |
950±2 dB |
Frequency response (6,3/1 kHz ) |
dB |
2±3 |
Tape speed |
cm/s |
4.75 |
Measuring the recording and play-back funktion with IEC (R723DG) tape from BASF
|
Bias voltage |
V |
7,7±30 % |
Bias current |
µA |
350±30 % |
Recording current |
µA |
90±5 % |
Sensitivity ( 1 kHz ) |
µV |
950±2 dB |
Frequency response ( 3,15 kHz / 1 kHz ) |
dB |
-6±3,0 |
Totally harmonic distortion ( 333 Hz ) |
% |
max.:10 |
Magnetic screening ( 70 A/M, 125 Hz ) |
mV |
5 |
Earth resistance |
Ω |
max.:5 |
Insulation resistance ( DC 250 V ) |
MΩ |
min.:50 |
Tape speed |
cm/s |
2.38 |
Pole material |
|
Permalloy |
