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Warranty, Service and Repair

Calibration

Before leaving the factory, all G.R.A.S. products are calibrated in a controlled laboratory environ-
ment using traceable calibration equipment. 

We recommend a yearly recalibration at minimum, depending on the use, measurement environ-
ment, and internal quality control programs. 

We recommend calibration prior to each use to ensure the accuracy of your measurements.

Warranty

Damaged diaphragms in microphones can be replaced. The microphone diaphragm, body, and 
improved protection grid are made of high-grade stainless steel, which makes the microphone 
resistant to physical damage, as well as corrosion caused by aggressive air or gasses. This, 
combined with the reinforced gold-plated microphone terminal which guarantees a highly reli-
able connection,enables G.R.A.S. to offer 5 years warranty against defective materials and 
workmanship.

The warranty does not cover products that are damaged due to negligent use, an incorrect power 
supply, or an incorrect connection to the equipment.

Service and Repairs

All repairs are made at G.R.A.S. International Support Center located in Denmark. Our Support 
Center is equipped with the newest test equipment and staffed with dedicated and highly skilled 
engineers. Upon request, we make cost estimates based on fixed repair categories. If a product 
covered by warranty is sent for service, it is repaired free of charge, unless the damage is the 
result of negligent use or other violations of the warranty. All repairs are delivered with a service 
report, as well as an updated calibration chart.

WEEE directive:
2002/96/EC

CE marking directive: 

93/68/EEC

Manufactured to conform with:

RoHS directive:
2002/95/EC

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.

7

LI0078 – 28 September 2017

Содержание RA0075

Страница 1: ...Instruction Manual RA0075 6cc Coupler ANSI 3 7 and IEC 60318 3 www gras dk LI0078 28 September 2017 ...

Страница 2: ...ation that is made available by G R A S is the copyrighted work of G R A S and is owned by G R A S The content in this document is subject to change without notice G R A S Sound Vibration A S is not liable or responsible for any errors or inaccuracies that may appear in this document Trademarks Any other product names mentioned in this document may be trademarks or registered trade marks of their ...

Страница 3: ...Contents Introduction 4 Components 4 Characteristics 5 Exploded View 6 Warranty Service and Repair 7 Calibration 7 Warranty 7 Service and Repairs 7 3 LI0078 28 September 2017 ...

Страница 4: ...preamplifier An exploded view of its user serviceable components together with a suitable pre amplifier and adapter and microphone is shown in Fig 2 Preamplifiers It can use either a 1 preamplifier or preamplifier with an adapter The example in Fig 2 shows 26AK G R A S Preamplifier RA0073 G R A S to 1 Adapter Microphones It uses primarily a 1 pressure condenser microphone of the type WS1P with the...

Страница 5: ... supra aural ear phone on a human ear Frequency The output level of an earphone on a real ear measured below 500Hz is lower because of leak age and flesh compliance From 500Hz to 1500Hz it is about the same for both ear and cou pler Between 1500Hz and 8000Hz the response of the coupler is a fair indication of the earphone s performance However this cannot necessarily be used as a precise indicatio...

Страница 6: ... GR0572 Stop collar 40EN 1 Microphone 40EN in Type L W E 640 AA configuration Can also be used with protection grid Preamplifier e g 26AK or 26AM Fig 2 Exploded view of user servicable parts with a 1 microphone and a preamplifier 6 LI0078 28 September 2017 ...

Страница 7: ... defective materials and workmanship The warranty does not cover products that are damaged due to negligent use an incorrect power supply or an incorrect connection to the equipment Service and Repairs All repairs are made at G R A S International Support Center located in Denmark Our Support Center is equipped with the newest test equipment and staffed with dedicated and highly skilled engineers ...

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