用途
- Coupler measurement
- Where space is limited
| 特徴
- 10 – 32 UNF output connector
- Connects directly to DeltaTron sockets
- Low output impedance allowing the use of long extension cables
- ICP® compatible
- Supports ®Smart Transducer Interface” IEEE P 1451.4 containing TEDS (Transducer Electronic Data Sheet)
|
The Type 2695 preamplifier is very compact, and operates over a wide range of temperature, humidity and other environmental conditions. It has a very high input impedance presenting virtually no load to the microphone. The low output impedance means that you can connect long cables between the preamplifier and measurement equipment. The preamplifier’s main application is in vibration analysis configurations with DeltaTron or ICP input modules where it is also desired to make acoustical measurements. It presents a very price competitive solution compared to a system with both vibration and acoustical inputs.
DeltaTron is a generic name for Brüel & Kjær transducers and signal conditioning products. It identifies products that operate on a constant current power supply and give output signals in the form of voltage modulation on the power supply line. One of the advantages of this system is that it allows you to use inexpensive coaxial cables. The preamplifier converts the DeltaTron or ICP constant current line drive (CCLD) supply, which must be between 2 and 20 mA (nominal 4 mA), into a constant 12 V DC level. The output signal from the microphone swings around this DC level. As no polarization voltage is available, only prepolarized condenser microphones can be used, e.g., Types 4155, 4176, 4188, 4189, 4942 and 4944. For further details of prepolarized condenser microphones, see the appropriate Product Data Sheets.
For a full Description and Specifications, see
Product Data
