
RA660 Operation Manual
8509790 Rev. 2
58
18/04/2018
6.3 Interface Box Connections
CONNECTION
SOCKETS:
SPECIFICATION
Mic In
Z
I
= 3
k Ω
U
I
= 0.5 - 50 mV
eff
USB in
USB 2.0
Power In
24 VDC
Line In
Z
I
= 10
k Ω
U
I
= 50 - 500 mV
eff
Audiometer 1 - 8
Custom
SOCKET
CONNECTOR
PIN 1
PIN 2
PIN 3
PIN 4
Mic In
3.5 mm Stereo
Signal
Bias
Ground
Line In
3.5 mm Stereo
Signal
Signal
Ground
USB In
+5 VDC
Data
–
Data +
Ground
Power In
1 2
Ground
+24 VDC
Summary of Contents for RA660
Page 1: ...RA660 Operation Manual RA660 PC based group audiometer...
Page 2: ...RA660 Operation Manual...
Page 41: ...RA660 Operation Manual 8509790 Rev 2 39 18 04 2018 RA660 Daily Listening Check Screens...
Page 56: ...RA660 Operation Manual 8509790 Rev 2 54 18 04 2018...
Page 70: ...RA660 Operation Manual 8509790 Rev 2 68 18 04 2018...
Page 71: ...RA660 Operation Manual 8509790 Rev 2 69 18 04 2018 7 2 Import Data Format...