GRAS 43AF 1'' 6cc 耦合器套件，符合 IEC 60318-3 标准
GRAS 43AF 1'' 6cc 耦合器套件，符合 IEC 60318-3 标准
Connection: 200 V/LEMO
Volume: 6 cc
Dyn range: 14 dB(A) to 146 dB
ANSI: S3.7
IEC: 60318-3
GRAS 43AF 耦合器套件是用于电话听筒和耳机声学测试的全套测试夹具，符合 ANSI S 3.7 - 1995 - 美国耳机测试国家标准。
Technology
The GRAS 43AF Coupler Kit is a complete test jig for acoustically testing telephone handsets and earphones and complies with ANSI S 3.7 – 1995 – American National Standard for Testing Earphones.
Specifications
Theoretical dynamic range lower limit with GRAS preamplifier
dB(A)
14
Theoretical dynamic range upper limit with GRAS preamplifier @ +28 V / ±14 V power supply
dB
134
Theoretical dynamic range upper limit with GRAS preamplifier @ +120 V / ±60 V power supply
dB
146
Set sensitivity @ 250 Hz (±2 dB)
mV/Pa
50
Set sensitivity @ 250 Hz (±2 dB)
dB re 1V/Pa
-26
Coupler volume
mm³
6 ccm
Temperature range, operation
°C / °F
-30 to 60 / -22 to 140
Temperature coefficient @250 Hz
dB/°C / dB/°F
-0.01 / -0.006
Humidity range non condensing
% RH
0 to 80
ANSI standard
S3.7
IEC standard
60318-3 (former 60303)
ITU-T recommondations
P.380
CE/RoHS compliant/WEEE registered
Yes/Yes/Yes
Connector type
3 m 7-pin LEMO
Weight
g / oz
1.75 / 61.729
GRAS Sound & Vibration reserves the right to change specifications and accessories without notice.
Ordering info
Included
| GRAS RA0075 | NBS 9A Coupler |
| GRAS RA0076 | Thread Adapter |
| GRAS 40EN | 1" Microphone |
GRAS 26AC | ¼" Preamplifier |
| GRAS RA0052 | Test Jig |
Optional
| GRAS 12AK | Power Module |
| GRAS 42AA | Pistonphone |
Miscellaneous
| GRAS RA0196 | High-tension springs (set of two) |
GRAS Sound & Vibration reserves the right to change specifications and accessories without notice.
