| Magnetic Characteristics: |
Test Notes: |
| Coercivity Hc: |
365 Oe, BH |
Nominal |
| Retentivity Brs |
1590 Gs |
|
| Particle orientation: |
Longitudinal |
|
| Recording Performance References: |
| Recorder |
Ampex-Aria ATR-102 |
|
| Record head gap length |
1 mil |
|
| Reproduce head gap length |
0.12 mil |
|
| Track width |
200 mils nominal |
|
| Tape Speed |
30 ips, 76.2 cm/sec |
|
| Playback equalization |
17.5 µs, AES |
|
| Recording bias |
1.4 dB over @ 20 kHz |
See Recommended Bias chart below 1 |
| Bias osc. frequency |
438 kHz |
|
| Recording Level Reference |
185 nWb/m = 0 VU |
Ampex operating level |
| Frequency Pass Band |
20Hz-20Khz |
Equivalent wave length of 1.5 inches to 0.15 mils |
|
| Maximum Output Level 1 kHz at 3% 3rd harmonic distortion |
16.5 dB |
|
| Saturation Output Level |
| 1 kHz |
23.5 dB |
Level at which linearity exceeds 1 dB of input signal |
| 10 kHz |
16.1 dB |
|
| 16 kHz |
15.2 dB |
|
| Maximum linear operating level |
9 dB over 185 nWb/m |
Linear frequency vs output level through pass band. |
| 3rd Harmonic Distortion: |
1 kHz fundamental frequency |
|
| 0 dB Reference operating level |
0.032 % |
|
| +6 dB over operating level |
0.096 % |
|
| +10 dB over operating level |
0.28 % |
|
| +12 dB over operating level |
0.49 % |
|
| Signal to Noise ratio (Bias Noise) |
-68 dB |
ASA , NAB A weighted |
| Peak Dynamic Range |
86 dB |
|
| Dynamic range ref to 1% |
82 dB |
1 kHz fundamental |
| 3rd harmonic distortion |
| Linear dynamic range |
78 Db |
Range in which frequency / wavelength response is linear ±0.3 dB tolerance |
| Print-through characteristic |
-60 dB |
1K tone on preceeding wrap of tape stored for 24 hours on NAB reel at 72º F |
| Physical Specifications: |
| Yield Strength |
12 Lbs / half in |
Produces 3% elongation of a 6" test sample |
| Breaking strength |
24 Lbs / half in |
Force that will break a 6" test sample |
| Coating thickness |
0.59 mils |
|
| Backcoating |
0.03 mils |
|
| Polyester base film |
1.42 mils |
|
| Total |
2.04 mils |
|
| Standard widths: |
| 1/4" |
0.246 inches |
Tolerance +0.0 / -0.002" |
| 1/2" |
0.496 inches |
|
| 1" |
0.996 inches |
|
| 2" |
1.996 inches |
|
| Backcoating resistance |
? 30K Ohms |
Per linear inch by pin probe |
| Oxide coating resistance |
>5M Ohms |
|
| Bias Current Recommendation1 |
10 kHz signal, 15 ips |
10 kHz signal, 30 ips |
|
| 1 mil gap length (ATR-Aria) |
1.2 dB |
0.5 dB |
| 5 mil gap length (Ampex) |
3.0 dB |
1.4 dB |
| .25 mil gap length (Studer) |
3.5 dB |
1.5 dB |
