TECHNICAL SPECIFICATION
28
OM033-4 - CA850 Series 5 Operating Manual
13
TECHNICAL SPECIFICATION
13.1
INPUT/OUTPUT
a) Power Input
5V DC, 1.5Amp; 2.5mm barrel-type socket
b) Left and Right Earphone
6.3mm Jack Socket
c) Patient Response Switch
6.3mm Jack Socket
d) Serial Interfaces
industry-standard USB
e) Diagnostic Interface (Data)
reserved port (no user access permitted)
f) Maximum Voltage at any output
12V peak
13.2
AUDIOMETRIC
a) Audiometer type
Type 4 (IEC 60645-1)
b) Frequencies (air conduction)
500 (Hz), 1, 1.5, 2, 3, 4, 6 & 8 (kHz)
c) Frequency Accuracy
<1%
d) Distortion:
<2%
e) Output Level Range
-10dBHL to 95dBHL (all frequencies)
f) Manual test Output Level Steps
5dB
g) Bekesy test Output Level Steps
2.5dB
h) Computer test Output Level Steps 5dB
i)
Output Level Accuracy
Within 3dB
j)
Rate of change of SPL
Approx 5 dB/sec in Bekesy test mode
k) Output transducer & ref. level
DD45: ISO 389-1, Table 2
l)
Tone present
single, pulsed in manual mode
m) Headset static force
4.5N
13.3
EARPHONE SOUND ATTENUATION CHARACTERISTICS
Frequency, Hz
125
250
500
1000
2000
4000
8000
Attenuation, dB
2
5
7
15
25
31
23
13.4
OTHER FEATURES
a) Keyboard
Standard layout for data entry
b) Communication
Talkover via integral microphone
c) Built-in Graphics LCD Display
115mm wide x 86mm high display area
d) Real Time Clock
Battery backed
e) Internal Database
2,000 records including name and address.
13.5
PHYSICAL & ENVIRONMENTAL
a) Dimensions (Main Unit)
330mm wide, 250mm deep, 98mm high
b) Weight
1.6kg
c) Operating Temp/Humidity
+15
o
C to +35
o
C; 30% to 90% (non-condensing)
d) Transport/Storage Temp/Humidity -20
o
C to +70
o
C; 10% to 90% (non-condensing)
e) Pressure (Operating)
700hPa to 1060hPa
f) Pressure (Transport/Storage)
500hPa to 1060hPa
g) Power Requirement
100-240V, 50/60Hz, 0.25A (via mains adapter)
h) Paper Requirement
Pre-printed single sheets (A5), plain (A4)
13.6
EQUIPMENT CLASSIFICATION
Type of protection against electric shock
Powered via SELV
ClassII mains adapter
D
EGREE OF PROTECTION AGAINST ELECTRIC SHOCK
T
YPE
B
APPLIED PART
Degree of protection against ingress of water
Not protected
Mode of operation
Continuous operation