DPA 4033 Podręcznik użytkownika - Strona 3

Przeglądaj online lub pobierz pdf Podręcznik użytkownika dla Mikrofon DPA 4033. DPA 4033 9 stron. Headset microphone; compact omnidirectional microphones 12mm

Drukuj stronę

The cartridge

Types 4035, 4033, 4036 and 4037 are omnidirectional (pressure)

microphones which uses the same microphone capsule as the standard

microphones Types 4004 and 4007: A 12mm diameter prepolarized

condenser cartridge. The diaphragm is a nickel foil which has been coated

with a ultra-thin polymer layer for optimum corrosion resistance. The

microphone housing is of German silver, an alloy with a high content of

nickel to match the stable thermal qualities of the diaphragm. For optimum

stability the microphone cartridge has undergone a special pre-aging

process which releases all tensions in the materials and stabilizes the

polarization voltage.

The preamplifier

Types 4035, 4033, 4036 and 4037 use inbuilt ultra-small, thickfilm

preamplifiers with unity-gain, low noise FET-amplifier technology. The

thickfilm technology enables the microphone cartridge to be mounted on

exceptionally compact microphone housings with the preamplifiers mounted

directly behind the microphone cartridge. A circuit of passive components in

the standard 3-pin XLR connector adapts the P48 phantom powering,

separates the supply voltage from the audio signal and act as an impedance

balancing circuit for optimum noise immunity. The preamplifier has a cable

drive capability of up to 100 m after the XLR-connector (See Fig. 1 for pin

designation).

The Types 4035, 4033, 4036 and 4037 comes with an individual calibration

chart of the self noise, sensitivity and the individual frequency response.

User's Manual

Technical Description

User's Manual

Technical Description

The mechanical design

Types 4035, 4033, 4036 and 4037 are acoustically identical, but differ in

their mechanical design. Types 4033, 4036 and 4037 are delivered with 5m

of extremely flexible, high quality microphone cable as standard and the

Type 4035 is delivered with 3m cable. The 4037 has its cable mounted at

90o to the microphone axis, the 4036 has its cable mounted behind the axis

and the 4033 has a standard triaxial Lemo-connector for simple and safe

mounting and removal of the microphone.

Important: The Microphone will only meet its specifications

if powered correctly.

Fig. 1. External view of the output socket of the standard

3-pin XLR-connector used in the Types 4035, 4033, 4036 and 4037.

Ground

–

Signal