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VT IEPE-2G05 - USB Digital IEPE Interface
VT-IEPE-2G05
PC USB 24-bit dual-channel 48 kSPS 0.03Hz~23kHz                                                             
IEPE Data Acquisition Interface                                         Manual
                    US$399.95                Free Express Shipping

VT IEPE-2G05 VT IEPE-2G05A VT IEPE-2G05B
VT IEPE-2G05C VT IEPE-2G05D VT IEPE-2G05E

Download and try the fully functional Multi-Instrument software using your sound card as the ADC and DAC device!

1. Instroduction

VT IEPE-2G05 is a 24-bit, dual-channel, USB data acquisition interface specially designed for use with IEPE sensors such as IEPE accelerometers, IEPE microphones and IEPE hydrophones. Each channel has six calibrated voltage measurement ranges for easy calibration to sensor sensitivity: ± 250 mV, ± 500 mV, ± 1 V, ± 2.5 V, ± 5 V, ± 10 V, and a built-in 24V 4mA current source to drive an IEPE sensor directly. It contains a hardware high pass filter with 5 selectable -3dB corner frequencies: None (0.03Hz), 1.8 Hz, 119 Hz, 236 Hz, 464 Hz. The signals sensed by the IEPE sensors can be amplified and output directly from the stereo headphone jack even without running the PC software.  When used in conjunction with the Multi-Instrument® software, the setup allows you to take reliable and quality vibration measurements as simply as plug & play. No external power supply and driver installation is required. It is a truly hassle-free portable noise and vibration measurement solution.

VT IEPE-2G05A has the same specifications as VT IEPE-2G05, except that its Channel B has a 20 dB higher analog gain, with its voltage measurement ranges changed to: ± 25 mV, ± 50 mV, ± 100 mV, ± 250 mV, ± 500 mV, ± 1 V. The increased gain makes it more capable of measuring low level signals such as a low-dBSPL sound.

VT IEPE-2G05B has the same specifications as VT IEPE-2G05, except that its two input channels A & B have a 20 dB higher analog gain, with their voltage measurement ranges changed to: ± 25 mV, ± 50 mV, ± 100 mV, ± 250 mV, ± 500 mV, ± 1 V. The increased gain makes it more capable of measuring low level signals such as a low-dBSPL sound. 

VT IEPE-2G05C/D/E have the same specifications as VT IEPE-2G05, except that their Channels B have a 40 dB higher analog gain, with their voltage measurement ranges changed to: ± 2.5 mV, ± 5 mV, ± 10 mV, ± 25 mV, ± 50 mV, ± 100 mV. The increased gain makes them more capable of measuring extra low-dBSPL sound. Their Channels A have a 0dB /20dB / 40dB higher analog gain respectively than that of VT IEPE-2G05.

All the above models can be switched to a voltage measurement mode (e.g. for the purpose of accepting the voltage pulses output by a non-IEPE tachometer) by cutting off the 24V 4mA constant current supply through an internal DIP switch in each channel. The 4mA constant driving current can be modified as well (e.g. for the purpose of driving a very long cable). These customizations are recommended to be done in the factory upon request before shipping.

It is possible to run multiple VT IEPE-2G05/A/B/C/D/E using multiple instances of the software on the same computer.

2. Package Contents

1) VT IEPE-2G05/A/B/C/D/E unit with a hardware activated Multi-Instrument Standard software license
2) USB cable (1.5 m)
3) CD (contains the copy-protected Multi-Instrument Software)
4) Carrying case


3. Optional Items

You may follow the links below to purchase the optional items:
1) IEPE Accelerometers, IEPE Velocity Sensors, IEPE Impedance Heads, IEPE Impact Hammers (including a mounting stud / screw and a cable from sensor to BNC, default: 2m)
2) IEPE Measurement Microphones (including a small mic stand, a mic clip and a cable from mic to BNC, default: 2m)
3) IEPE Measurement Hydrophones
4) Magnetic Mounting Bases
5) Software License Upgrades
6) USB Isolators
7) IEPE simulators
 
Note: It is usually possible to place the optional items inside the same carrying case with VT IEPE-2G05/A/B/C/D/E.

4. Hardware Specifications

Number of Input Channels 2
Sampling Frequency 48 kHz (original), 44.1 kHz, 32 kHz, 22.05 kHz, 16 kHz, 11.025 kHz, 8 kHz, 4 kHz, 2 kHz ...
ADC Bit Resolution 24 Bits (can be reduced to 16 bits or 8 bits)
Input Voltage Ranges IEPE-2G05: ± 250 mV, ± 500 mV, ± 1 V, ± 2.5 V, ± 5 V, ± 10 V

IEPE-2G05A:
Ch.A: ± 250 mV, ± 500 mV, ± 1 V, ± 2.5 V, ± 5 V, ± 10 V
Ch.B: ± 25 mV, ± 50 mV, ± 100 mV, ± 250 mV, ± 500 mV, ± 1 V

IEPE-2G05B:
± 25 mV, ± 50 mV, ± 100 mV, ± 250 mV, ± 500 mV, ± 1 V


IEPE-2G05C:
Ch.A: ± 250 mV, ± 500 mV, ± 1 V, ± 2.5 V, ± 5 V, ± 10 V
Ch.B: ±2.5 mV, ±5 mV, ±10 mV, ±25 mV, ±50 mV, ± 100 mV

IEPE-2G05D:
Ch.A: ± 25 mV, ± 50 mV, ± 100 mV, ± 250 mV, ± 500 mV, ± 1V
Ch.B: ± 2.5 mV, ± 5 mV, ± 10 mV, ± 25 mV, ± 50 mV, ± 100 mV

IEPE-2G05E:
± 2.5 mV, ± 5 mV, ± 10 mV, ± 25 mV, ± 50 mV, ± 100 mV
Input Connectors & Interface BNC, Single Ended, IEPE, 24V 4mA
Input Coupling Type IEPE-2G05: AC (High pass filtered at 0.03Hz)

IEPE-2G05A:
Ch.A: AC (High pass filtered at 0.03Hz)
Ch.B: AC (High pass filtered at 0.3Hz)

IEPE-2G05B: AC (High pass filtered at 0.3Hz)

IEPE-2G05C:
Ch.A: AC (High pass filtered at 0.03 Hz)
Ch.B: AC (High pass filtered at 3 Hz)

IEPE-2G05D:
Ch.A: AC (High pass filtered at 0.3 Hz)
Ch.B: AC (High pass filtered at 3 Hz)

IEPE-2G05E: AC (High pass filtered at 3 Hz)
Input Isolation No (Isolation can be achieved through a USB isolator)
Input Impedance IEPE-2G05: 510 kΩ

IEPE-2G05A:
Ch.A: 510 kΩ
Ch.B: 51 kΩ

IEPE-2G05B: 51 kΩ

IEPE-2G05C:
Ch.A: 510 kΩ
Ch.B: 5.1 kΩ

IEPE-2G05D:
Ch.A: 51 kΩ
Ch.B: 5.1 kΩ

IEPE-2G05E: 5.1 kΩ
Input High Pass Filter None, 1.8 Hz, 119 Hz, 236 Hz, 464 Hz
Frequency Response IEPE-2G05: 0.03 Hz ~ 22.8 kHz

IEPE-2G05A:
Ch.A: 0.03 Hz ~ 22.8 kHz
Ch. B: 0.3 Hz ~ 22.8 kHz

IEPE-2G05B: 0.3 Hz ~ 22.8 kHz

IEPE-2G05C:
Ch.A: 0.03 Hz~22.8kHz
Ch.B: 3 Hz~22.8kHz

IEPE-2G05D:
Ch.A: 0.3 Hz~22.8kHz
Ch.B: 3 Hz~22.8kHz

IEPE-2G05E:
3 Hz~22.8kHz
Frequency Accuracy 50 PPM
Anti-aliasing Filter 22.8 kHz at Sampling Rate 48 kHz, proportionally adaptive to Sampling Rate Chosen
Buffer Size Virtually unlimited (streaming mode)
Voltage Accuracy ±0.5% at 1 kHz
Output Connector & Interface ϕ3.5 mm Stereo Audio Jack
Output Voltage Range  ±0.5 V
Digital Input / Output Standard USB Audio Class 1
Calibration Individually done at factory, user re-calibratable
PC Interface USB 2.0 Full Speed / USB 1.1
Device Category in Multi-Instrument ADC Device Sound Card MME
DAC Device Not Applicable
Power Bus powered by USB port, no external power source required
Power Consumption Max. 0.5W
Dimensions 128 mm (L) × 57 mm (W) × 24 mm (H),   anodized aluminum case
Operating Temperature 0° C ~50° C
System Requirements Windows XP, Vista, 7, 8, 8.1, 10 or above, 32 bit or 64 bit

VT IEPE-2G05 High Pass Filter Frequency Response
Frequency Response of Built-in High Pass Filter (sampled at 48 kHz)


5. Examples

(1) VT IEPE-2G05 with Multi-Instrument Pro + Spectrum 3D Plot

VT IEPE-2G05 with Multi-Instrument Pro + Spectrum 3D Plot

(2) VT IEPE-2G05 with Multi-Instrument Pro + Spectrum 3D Plot + Vibrometer

VT IEPE-2G05 with Multi-Instrument Pro + Spectrum 3D Plot + Vibrometer


(3) Half-sine Shock Test (Video: ShockTestWithMulti-Instrument.mp4 )

Half-Sine Shock Test


(4)  Sound Quality Measurement Example - Loudness, Loudness Level, Sharpness of a white noise in a Free Field with an IEPE Measurement Microphone
      (Note: Multi-Instrument Pro or above is required)

Sound Quality Measurement - Loudness, Loudness Level, Sharpness of White Noise in a Free Field

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