1、UDC 681.841.2 - 20 - 20 -10 DEUTSCHE NORMEN i 0.5 +0,5 t0.5 March 1971 O - DIN 45541 Frequency “est Record st 33 and a 33 (33 1/3 rev/min; Stereo and Mono) 20.5 I Frequenz-Mea-Schallplatte St 33 und Pl 33 I. Dimensions The frequency test record has the same outside dimensions as the St 33 record acc
2、ording to Dill 45547 and the M 33 record according to DIN 45537, nominal diameter 300. 2. Recordiws The frequency response corresponds to the time con- stants 3180/318/7? ps according to DIN 45547 and DIN 45537 respectively. !The reference level is the peak velocity 6 = 8 cm/s on side A and = 10 cm/
3、 on side B corresponding to fus1 nodulation at 1000 HI ( LO ahel) according to DIN 45547 or DIN 45537. The radius of the bottom of the groove is z4 p. The vertical wall angle for stereo recordings is 159 2.1. Recording on side A (Stereo 22) The following are recorded on the groove walls (stereo) : 2
4、.1.1. Reference level band: I kBz, O dB ( - 8 cm/s), 15 s left-hand side, side. 2.1.2. Gliding frequency band left-hand side; 31.5 to 20000 He; level as for fixed frequency band (see Table), duration 47 s. 2.1.3. Gliding frequency band right-hand side; 31.5 to 20000 Hz; level as for fixed frequency
5、band (see Table), duration 47 s. - -_-I-_-_- 15 s right-hand 2.1.4. Fixed frequencies as shown in Table. Between the individual recorded frequencies, identi- fication grooves. The identification grooves are wider after the reference level tone, after 16, 10 and 1 kBz and after 80 and 31.5 Hz. 2.1.5.
6、 Long constant level tone cut laterally (mono). IO IrHz, -20 dB, duration: 6 minutes. 2.2.1. Reference level band: 1 kz, O dB (Y - 10 CdS), 15 8. 2.2.2. Gliding frequency band: 31.5 to 20000 Hz; level as for the fixed frequency band (see Table). Table. Recording on side A and B Duration of tone in e
7、ach case IO seconds Frequency 1 kHz 20 kHz 18 kHz 16 kHz 14 kHz 12,5 kHz 10 kHz 8 kHz 6,3 kHz 4 kHz 2 kHz 1 kHz 1000 Hz 500 Hz 250 Hz 125 Hz 80 Hz 63 Hz 40 Hz 31,5 Hz 1000 Hz f 0.5 -20 f 0.5 c u* Q, %- L =a .f E 5 8 s .- c 58 m2 cg Q, ;= c ES rJ *Ga ur - c ;E 0- 55 f 02; 2 g 0“ fc 22 2- 1) 0 a= i c
8、c m 0- m n n a c? c .- - m v -c C m E Z c n c al c1 m -0 U M a E .- L 0 8 .- a $ c .- E a L 8 N vi a U 3 4 L z E.? nz m :! =1 ;! ;i $: * DI :a Alleinverkauf der Normbltter durch Beuth-Vertrieb GmbH, Berlin 30 und Kln DIN 45541 engl. Preisgr. 2.2.3. Fired frequencies as shown in Table. Between the in
9、dividual recorded frequencies there are identification grooves. The identification grooves are wider after the reference level tone, after 16, IO and 1 kBz and after 80 and 31.5 B 2.2.4. Glidi (short break3 at 16 and 50 Eh. frequency band: 5 to 125 Hz (rumble frequency range), -20 dB, with suppressi
10、on Continued on page 3. Labelinq Frequency test records complying with this Standard shall be provided nith labels as shown in Figure 1 and Figure 2. Figure I. Label for side A All rights reserved by the record manufacturer Copying prohibited Sold by: VERTRIEB. EEUTH-VERTRIEB GMBH . BERLIN30 . KOLN
11、r-.- SiCe A facturers iden- rrequency test record (Stereo) 1. Reference level tone: 1 !dZ, (xecording characteristic 3180/318-75 p) O dB: left-hand side - right- hand side tification num- ber, e.g. matrix or list number 2. Gliding frequency band: 3. Gliding frequency band: 4. Fixed frequency band: 3
12、1.5.20000 Hz, left-hand side 31.5.20000 Hz, right-hand side 20000 to 31.5 E&, alternately left-hand side - right-hand side facturers name / Manufactured by: 5. 10000 Hz, -20 dB, cut laterally Figure 2. 1. 2. 3. 4. Label for side B All rights reserved by the record manufacture Copying prohibited Sold by: VERTRIEB: BEUTH-VERTRIEB GMBH. BERLIN30 . KOLN Side B I O Reference level tone: 1 Gliding frequency band: 31.5. . .23000 IZ Fixed frequency bind: 20000 to 31.5 HZ Gliding frequency bznd: Frequency test record (Fono) tification num- ber, e.g. matrix or list number ,125 EZ facturers name
