Technology
The GRAS 43AF-S1 Artificial Ear 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
| Parameter |
Unit |
Value |
| 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 recommendations |
– |
P.380 |
| CE/RoHS compliant / WEEE registered |
– |
Yes / Yes / Yes |
| Connector type |
– |
3 m 7-pin LEMO |
| Weight |
g / oz |
1.75 / 61.729 |
