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
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 has a built-in TEDS chip; when fitted with a microphone, it can be programmed as a single unit. It can be used with the following G.R.A.S. 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.
Before leaving the factory, G.R.A.S. products are tested and calibrated by G.R.A.S., and an individual test certificate is included with the product.
G.R.A.S. Sound & Vibration continually strives to improve the quality of our products for our customers; therefore, the specifications and accessories are subject to change.
|Frequency range (±0.2 dB) with 18 pF microphone dummy||Hz||2.5 to 200 k|
|Input impedance||GΩ // pF||20 // 0.4|
|Output Voltage Swing, min. @ 24-28 V CCP voltage supply||Vp||8|
|Noise (A-Weighted) max.||µV||2.5|
|Noise (A-Weighted) typ.||µV||1.8|
|Noise (Linear 20 Hz – 20 kHz) max.||µV||6|
|Noise (Linear 20 Hz – 20 kHz) typ.||µV||3.5|
|High-pass filter @3dB cut-off||Hz||TBD|
|Power supply (Constant Current Power)||mA||2 to 20 (typ. 4)|
|DC bias voltage, typ.||V||12|
|Temperature range, operation||°C / °F||-30 to 70 / -22 to 158|
|Temperature range, storage||°C / °F||-40 to 85 / -40 to 185|
|Humidity range non condensing||% RH||0 to 95|
|TEDS UTID (IEEE 1451.4)||769 v. 0.9|
|Connector type||Microdot 10/32|
|CE/RoHS compliant/WEEE registered||Yes / Yes, Yes|
|Weight||g / oz||TBD|