IA004 Preamplifier Input Adaptor_BSWA Technology Co., Ltd.

IA004 Preamplifier Input Adaptor

IA004 preamplifier input adapter is mainly used to input electrical signals to the preamplifier to test the electrical performance of the preamplifier and sound level meter.

The input connector of IA004 is BNC, and common signal generators are always select BNC as the output connector. Therefore, a BNC coaxial cable can be used to connect IA004 and the signal generator. The connection thread can meet the requirements of IEC 61094-4 for working standard microphones and it can be connected to a 1/4 "preamplifier directly.

IA004 has a built-in small capacitor (15 pF default, user can request the value according to the capacitance of microphone), which can simulate the source output impedance of capacitive microphones and it’s often used to test the insertion loss (attenuation) and frequency response of preamplifiers. The internal small capacitor of IA004 has been shielded according to the active shielding principle to avoid signal attenuation before input into the preamplifier as much as possible.

User can customize the direct connected IA004-Dir, which doesn’t include the built-in capacitor.

Features:

● Built-in capacitors to simulate the source output impedance of capacitive microphones

● 15 pF default, other values on request

● Use supplied BNC shortage plug can change to microphone cartridge equivalent

● Input adapter of direct connected is available

● Suitable for and 1/4" preamplifiers

Applications:

● Insertion loss (attenuation) and frequency response measurement of preamplifier

● Electrical signal tests of sound level meter

● Self-generated noise measurement of preamplifier and sound level meter

Specifications:

Type¹ IA004-X

Capacitance² 15 pF default (nominal value, other values on request)

Diameter 12.7 mm

Thread Ø5.7 mm-60 UNS-2B

Input Connector BNC

Maximum Input Voltage 200 Vp

Preamplifier 1/4” preamplifier compatible with IEC 61094-4

Supplied Accessory BNC shortage plug

Note 1: X=nominal value of built-in capacitor (in pF), X=Dir is direct connected.

Note 2: The capacitance value engraved on the shell is the nominal value, and the accurate capacitance value is provided in the supplied certificate.

Type¹	IA004-X
Capacitance²	15 pF default (nominal value, other values on request)
Diameter	12.7 mm
Thread	Ø5.7 mm-60 UNS-2B
Input Connector	BNC
Maximum Input Voltage	200 Vp
Preamplifier	1/4” preamplifier compatible with IEC 61094-4
Supplied Accessory	BNC shortage plug
Note 1: X=nominal value of built-in capacitor (in pF), X=Dir is direct connected. Note 2: The capacitance value engraved on the shell is the nominal value, and the accurate capacitance value is provided in the supplied certificate.

Download information:

IA004 Preamplifier Input Adaptor Brief