M20-ANT RF Solutions, M20-ANT Datasheet - Page 6

• Manufacturer Part Number: M20-ANT
• Description: ANTENNA, MAESTRO 20
• Manufacturer: RF Solutions

Specifications of M20-ANT

• Svhc: No SVHC (15-Dec-2010)

DS020-7 Oct ‘06
1.2.3.
-
Specification of microphone and speaker to be connected :
Microphone current @2V / 2K Ohm
Microphone input level
Speaker output current 150 Ohm/
1nF
Speaker impedance
Please refer to the document “Application notes - Power supply & Audio” for more information of audio connection.
1.2.4.
Pin number
1
2
3
4
Pin number
10
11
12
13
14
15
1
2
3
4
5
6
7
8
9
15-PIN D-SUB Female connector (RS232 / Audio)
The connector provides serial link and audio link to the modem.
4-PIN modem socket (Power, Input / Output)
Parameters
Name
I/O
~INTR
POWER -
POWER +
MICROPHONE (+)
MICROPHONE (-)
SPEAKER(+)
SPEAKER(-)
RESET
BOOT
Name
GSM100 U
DCD
GND
DSR
DTR
CTS
RTS
RX
TX
RI
©2006 REG No 277 4001, ENGLAND.
Pin assignment of 4-pin connector
Min
Data Terminal Ready
Data Carrier Detect
SERS
EIA designation
Request to Send
Data Set Ready
Functions
Input / Output port
Interrupt function triggered by pulling this pin to
ground or LOW level; reserved for additional
functions with new firmware
DC power negative input
DC power positive input
Transmit Data
Clear to Send
Ring Indicator
Receive Data
0.5 mA
Typical
16mA
Ground
M
ANUAL
32ohm
mVpp
Max
100
Ground
Output
Output
Output
Output
Output
Output
Output
Type
Input
Input
Input
Input
Input
Input
Input
Remark
Page 6
Pull low to reset
Not used
Note