Table
1-1
(cont)
--
.-
-
Characteristics
-
-
-
-
-.
-
-
-
INTERMODULATION DISTORTION
FUNCTION
Operation
SMPTE and DIN tests
Lower frequency range
Upper frequency range
Level ratio range
Residual IMD
(V, 2250 mV,
source resistance 61 kil,
~40°C)
.-
~
-
CClF difference tone test
(IM components
G
1 kHz)
Frequency range
Difference frequency range
Residual IMD
(Vn a250 mV,
source resistance
6
1 kR,
<+40°C)
Minimum input level
-
-~
~~
-
-
~
Accuracy (IMD ~30% and
readings
>4% of selected
distortion range)
---.
~.~
-~
~
FILTERS
400 Hz high pass
~~~
.
80 kHz low pass
~
30 kHz low pass
(standard and Option 01
only)
~
-
-~
-
22.4 Hz-22.4 kHz
{Option 02 only)
-~
-
~~~-.~
~
-~.~
-
.~
A weighting (standard and
Option 01 only)
~ ~
~
~
CClR WTG (Option 02 only)
Performance Requirements
--
-
---
-
--
-
-
--
-
~0.0025% (-92 dB) for 60 Hz-7 kHz
or 250 Hz-8 kHz, 4: 1 signals,
rms
response
~0.0018% (-95 dB) with 14 kHz and
15 kHz,
rms
response
Within
k
10%
(i
1 dB)
-3 dB at 400 Hz,
+
5%; at least
-40 dB rejection at 60 Hz
-3 dB at 80 kHz,
_+
5%
-3
dB at 30 kHz,
k
5%
-3
dB at 22.4 Hz,
+
5% and
22.4 kHz,
+-
5%
Supplemental lnformatlon
-
-
--
-
--
--
Fully automatic SMPTE, DIN, or CClF dif-
ference tone tests depending upon actual
input signal whenever respective IMD
620%. Distortion ranges are same as
THD
t
N function.
-.
-
-
-
50 Hz to 250 Hz
3
kHz to 100 kHz
1
:
1
to 5: 1 (lower
:
upper)
4 kHz to 100 kHz
80 Hz to 1 kHz
-
-
.
-
Accuracy is limited by residual IMD and
filter selection. Not applicable with quasi-
peak response (Option 02 only)
3
pole Butterworth response
-.
-
-
--
--
3
pole Butterworth response
3
pole Butterworth response
.-
Nithin specifications of CClR Recommen-
jation 468-2 and DIN 45405 for
~nweighted measurement response.
Nithin specifications for type 1 sound lev-
?I
meters listed in ANSI S 1.4 1971 (re-
lised 1976) and IEC Recommendation
179.
-
-
Nithin specifications of CClR Recommen-
iation 468-2 and DIN 45405 for noise
neasurements. Functional only with qua-
ii-peak detector (response).
-
-
-
-
.
-
-
-
-
--
REV
NOV
1981
Scans
by
ARTEK
MEDL4
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