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Bruel
&
Kjaer
Copenhagen
Denmark
Pick-up Test Record
33
1
/a
r.p.m.
6
Section 1
Vel~~;~: r:r:~~o~si~~~.~
0
c
~-~~.~ i~
2
15;
~~dku~~tion.
Band
1:
45°
left modulation
(A)
.
Band
2:45°
right
modulation
(B).
Section 2
0
Section 3
Reference Tones, 1 kc/s, 4
x
60 sec
.
·
Lateral Tracking Test,
Velocity level: 2.24 em/sec. rms
(45°)
100
c/s
(A+B),
5
x 15
sec.
(3.16
cm/s lateral or vertical)
Band 1: 0.001
em
peak
amplitude
Band 1:
45°
left
(A~
Band 2: 0.002
•
•
»
==~~ ~~ t!;e~~~h(~~)B)
==~~ =~ g:~
: :
Band 4: vertical
(A-B)
Band 5: 0.005
»
»
Section 4
Vertical Tracking Test, as section 3 but with vertical
(A-B)
modulation.
Section 5
Logarithmic Frequency Sweeps 10
c/s -
100 c/s in 16'/•
sec.
Start Marking (10 c/s point)
:
cessation of the 1 kc/s
signal
Recorded
levef:r~~~~i~~t ~':::;li~~d~·0.00113
em
peak.
==~~ ~~
:~~
~~~~~~~)
==~~:~~~~~~~~~(~A~~)
Section 6
as
section
1, but with small groove speed
'?ec
0 ,.,
.
"'ef\\
163696
ded on
ORTOFON Eo.\l'll
Fig. 1.6. Label of the QR 2008.
Spot frequencies
}A
20-16-12.5-10
kc/s
8
(0.6
em/sec rms)
1 kc/s reference
}~
tone
(3.
1 6
cm/secl
A-8
Tracking test
I
(compliance)
.
A+8
100 cts
bands of
increasing ampl. A-,8
0.001
to
0.005
em
10-100
C/S sweeps}A
constantamplitud 8
(0.00113
em peak)
A+8
for tone arm
A-8
resonance
as first section
}~
QR 2008
2
3
5
6
(33113 rpm)
+t.'3462
1. DESCRIPTION
Fig. 1.7. Section of the QR 2008 showing the succession of bands.
7
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