DPA 4004 Руководство пользователя - Страница 3
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Печатать страницуThe Passive Connection Converter
The PCC4000 Passive Connection Converter is an optional accesso-
ry that makes it possible to run High-Voltage Microphones on stan-
dard 48 V phantom power with reduced microphone specifications.
The maximum reduction of the microphone SPL handling capability
will be 13 dB and it is possible to drive up to 100 m (328.1 ft) of
cable with the PCC4000 with the same specifications. Like the High-
Voltage Microphones the PCC4000 is transformerless. The input
connector is a modified 4-pin female XLR for connection directly to
the microphone. The output is a standard 3-pin male XLR-connector
for connection to standard cables.
10
dB
5
0
-5
5 dB
-10
-15
10
20 Hz 50
100
200 Hz 500 1 kHz
Fig. 3. On-axis and diffuse-field responses of DPA 4004 and 4007.
4
On-axis
Diffuse
2
5
10
20
40
Fig. 4. Directional characteristics of DPA 4004 and 4007 (normalised)
40
dB
30
20
10
0
-10
200 Hz
Fig. 5. Typical third-octave inherent-noise spectrum of DPA 4004
and 4007.
0° dB
5 dB
20 kHz
15 kHz
10 kHz
5 kHz
1 kHz
ITU-R BS.468-4
A-weighted
2 kHz
20 kHz
5