Interacoustics Sera - Specification of input;output connections

D-0112389-I – 2022/04
Sera™ - Instructions for Use - EN Page 73
7.2 Specification of input/output connections
Sera
TM
ABR/OAE Connector for Probe,
Preamplifier
Preamplifier, Probe, Transducer connector
Pin
Description
Description
1
CH1 out
CH1 out
2
CH1 GND
CH1 GND
3
DGND
DGND
4
GND A / GND Microphone
GND A / GND Microphone
5
Microphone – input / Analog balanced in
Microphone – input / Analog balanced in
6
Microphone + input / Analog balanced in
Microphone + input / Analog balanced in
7
Power supply +3/+5V
Power supply +3/+5V
8
CH2 out
CH2 out
9
CH2 GND
CH2 GND
10
I2C CLK
I2C CLK
11
I2C D ATA
I2C DATA
12
I2C Interrupt
I2C Interrupt
Data input/output
USB type A-B micro USB port for communication
CRADLE CONNECTOR
CONNECTOR
MAINS
MICRO USB 5V/1.6A
SERA
TM
CONNECTOR
MICRO USB (IN)
1
1. +5 VDC
2. NC
3. NC
4. NC
5. Ground
Calibration properties
Accuracy
ABRIS
±
2 dB f or all stimulus types
DPOAE
±1.5 dB f or 1000 to 4000Hz and ±3 dB outside range
TEOAE
±
2 dB for click stimulus