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 IncidenceMicrophone
The 26CK has an integrated Microdot output connector.
The casing is made of stainless steel for maximumstrength 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 response (±0.2 dB) with 18 pF microphone dummy and 4.7 nF cable load||Hz||2.5 to 200 k|
|Input impedance||GΩ // pF||20 // 0.4|
|Output Voltage Swing, max. @ 24 V bias voltage||Vp||8|
|Noise (A-Weighted) maximum||µV||2.5|
|Noise (A-Weighted) typical||µV||1.8|
|Noise (Linear 20 Hz – 20 kHz) maximum||µV||6|
|Noise (Linear 20 Hz – 20 kHz) typical||µV||3.5|
|Power supply (Constant Current Power)||mA||2 to 20 (typ. 4)|
|DC-offset, minimum, single suppy||V||TBD|
|DC-offset, maximum, single suppy||V||TBD|
|DC-offset, balanced supply||V||TBD|
|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|
|Humidity coefficient @250 Hz||dB/% RH||TBD|
|TEDS UTID (IEEE 1451.4 )||27 v. 0.9|
|Connector type||Microdot 10/32|
|CE/RoHS compliant/WEEE registered||Yes / Yes, Yes|
|Weight||g / oz||TBD / TBD|
|Weight with cable and connector||g / oz||TBD / TBD|