Teac A-450 - TEST EQUIPMENT REQUIRED; TEAC TEST TAPE

2. TEST EQUIPMENT REQUIRED
1. Spring scale: For take-up torque check:
For fast forward & rewind torque checks:
2. String: Length: about 50 cm (20)
3. Cassette Reel Adapter: Diameter: 22 mm
* The tools above (1 — 3) are constructed as shown in Fig. 2-2.
O-—70g (O—2.50z.)
0 — 200 g (0 — 7.0 oz.)
4, Cassette Torque Meter: For take-up torque check: 0 — 100 g*cm (0 — 1.4 oz. inch)
For fast forward & rewind torque checks: 0— 160 g*cm (0 — 2.2 oz. inch)
* Use of the Cassette Torque Meter instead of the spring scale, if you have one, is recommended for
easier measuring. (See Fig. 4-6 on page 13)
* When ordering Cassette Torque Meter, allow for longer delivery time that is required for it.
5. Spring scale: For Pinch Roller pressure check: 0— 1 kg (2.2 lbs)
6. Wow/flutter meter: MEGURO DENPA SOKKI K.K., Model MK-668A
7. Frequency counter: Digital type, capable of 10 Hz to 100 kHz indication.
8. AF oscillator: 10 Hz — 100 kHz
9, AC VTVM: 0.1 mV — 300 V
10. Attenuator: General Purpose
11. Distortion analyzer; Basic frequency 400 Hz/1 kHz
12. Oscilloscope: General Purpose
13. Band-pass filter: 1 kHz narrow band-pass type
14. Test load resistor: Non inductive type 8 ohm/1 W
15. Plastic alignment tool:
16. Head demagnetizer; TEAC E-1 or equivalent
17. Cleaner: TEAC TZ-261 Tape Recorder Cleaner kit or pure alcohol
18. Oil: TEAC TZ-255 Oil kit or equivalent
TEAC TEST TAPE
For tape speed & wow/flutter test
MTT-111:
MTT-502:
For playback performance alignment
* For Dolby level Calibration
MTT-150:
MTT-116K:
MTT116U:
* For Playback method
* 3,000 Hz/—10 dB
‘For Record/playback method (blank
tape)
REMARKS: 0 dB = DIN Reference Level (333 Hz)
For record performance alignment (blank tape)
MTT-505TB: For BIAS 1/EQ 1 (CrO,)
MTT-504T: For BIAS 2/EQ 2 (Fe-Cr)
MTT-501: For BIAS 3/EQ 3 (Hi-Fi tape)
NOTE: The TEAC test tapes require longer delivery
time.
* Dolby B-type tone (modulated 400 Hz
tone), 200 nWb/m
*For frequency response test for EQ1&
2(CrO, & Fe-Cr)
* 3180 us + 7Ous
*315 Hz/-4 dB, 31.5 Hz — 14 kHz/-24
dB
*For frequency response test for EQ 3
(Hi-Fi tape)
* 3180 ws + 120 ps
*315 Hz/-4 dB, 31.5 Hz — 14 kHz/-24
dB
Fig. 2-1 TEAC Test Tape