GRAS 26CK 1/2” CCP Standard Preamplifier with Microdot Connector, Very Short
Freq range: 2.5 Hz - 200 kHz
Noise: 1.8 µV Gain: -0.45 dB
Special feature: For confined spaces
Technology
Typical applications and use
- For use in confined spaces
- High-frequency measurements
- High-pressure measurements
- Sound intensity measurements
- Near-field measurements
- Anechoic boxes
- Hearing-aid measurements
Design
The small, ceramic thick-film substrate in the 26CK has a very high input impedance and is shielded by a guard ring, which minimizes the influence of stray capacitance and microphonic interference.
The 26CK is delivered with Generation II TEDS. The calibration data is programmed into the built-in TEDS according to IEEE 1451.4 using UDID I27-0-0-0U. If your measurement platform supports Transducer Electronic Data Sheets you will be able to read and write data like properties and calibration data.
Generation II TEDS chip (DS2431) may require updated system software.
It can be used with the following GRAS prepolarized microphones:
- 40AE ½” Prepolarized Free-Field Microphone
- 40AD ½” Prepolarized Pressure Microphone
- 40AO ½” Prepolarized Pressure Microphone,High Frequency
- 40AQ ½” Prepolarized Random Incidence Microphone
The 26CK has an integrated Microdot output connector.
The casing is made of stainless steel for maximum strength and durability.
Calibration
Before leaving the factory, GRAS products are tested and calibrated by GRAS, and an individual test certificate is included with the product.
GRAS Sound & Vibration continually strives to improve the quality of our products for our customers; therefore, the specifications and accessories are subject to change.
Specifications
Conditions: 23 °C Ambient temperature
4 mA / 24 V open loop CCP voltage
18 pF dummy microphone
3 m output coax-cable
GRAS Sound & Vibration reserves the right to change specifications and accessories without notice.
Dimensions
Ordering info
Optional items
| GRAS AA0070 |
3 m Microdot - BNC Cable |
| GRAS AL0008 |
1/2" Microphone Holder, POM |
| GRAS AL0012 |
1/2" Microphone Holder, Stainless Steel |
| GRAS AL0005 |
Swivel head |
| GRAS AL0006 | Tripod |
| GRAS RA0019 |
Adapter for 1/4" microphone and 1/2" preamplifier |
|
Adapter for 1" microphone and 1/2" preamplifier |
|
| GRAS RA0190 |
Right-angled (90º) Adapter for 1/2" Microphone and 1/2" Preamplifier |
| GRAS RA0018 |
20 dB Attenuator for prepolarized 1/2" microphones |
|
20 pF Preamplifier-input Adapter for 1/2" preamplifiers |
|
| GRAS 12AL |
1-Channel CCP Power Module with A-weighting filter |
|
2-Channel Universal Power Module with signal conditioning and PC interface |
GRAS Sound & Vibration reserves the right to change specifications and accessories without notice.
