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 |
