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The AXIS 2191 Audio Module
34
Technical Specifications for the AXIS 2191
• Operating temperature: 40-105
• Humidity - 8-80% relative humidity.
• EMC -
: EN55024, EN55022, Class B and
EN61000-3-3.
• EMC - FCC Class A of FCC Rules and Regu-
lations part 15, subpart B.
• EMC -
• Full-duplex audio: Audio data encoded in
ADPCM format at 32kbps, 8 kHz sampling
(G.721). Data is sent using HTTP.
• 9-pin D-SUB serial connector: RS-232.
• Power Input: Axis PS-D power supply.
• Microphone Input: 1-50mVpp. PC type.
Connection Diagram
Audio
Pin
IN
IN
OUT
OUT
GND
IN
OUT
IN
Unused
o
Pinouts for the RS-232 Port
Pin
1
1
IN
2
2
IN
3
3
OUT
4
4
OUT
5
5
GND
6
6
IN
7
7
OUT
8
8
IN
9
9
IN
AXIS 2400+/2401+ Admin Manual
o
• Line Out: Unbalanced, 0.05-1.0Vpp
F (5-40
C).
• Line Input: Balanced 0.05-1Vpp. Connect
source ground to pin 2 and source signal to
pin 1 if the source is unbalanced.
• Speaker Output: Balanced, 0.5W. Imped-
ance 8-32 Ohms. Connect directly to
speaker without capacitors.
• Alternative Power: 12-15VAC, min 10VA,
or 15-20VDC, min 7W.
• Metrics: Height: 1.1" (27mm),
Width: 4.4" (112mm), Length: 4.3" (110mm),
Weight: 0.7lb (0.32kg).
• Maximum number of users: 10 (on local
area network).
The Audio Module to Video
Server Serial Cable
Server
Signal
CD
The serial cable supplied with your AXIS
RXD
2191 is wired as shown in the table:
TXD
DTR
GND
DSR
RTS
CTS
RI
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