參數(shù)資料
型號: Q2426A
廠商: Electronic Theatre Controls, Inc.
英文描述: SELF CONTAINED E GSM/GPRS 900/1800 OR 850/1900 BI BAND MODULE
中文描述: 自成一體的位置的GSM / GPRS或850/1900畢帶模塊900/1800
文件頁數(shù): 35/81頁
文件大?。?/td> 922K
代理商: Q2426A
WM_PRJ_Q2400_PTS_002 - 002
24th January 2003
confidential
Page :
35 / 81
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged
without prior written agreement.
Ce document est la propriété exclusive de WAVECOM. Il ne peut être communiqué ou divulgué à
des tiers sans son autorisation préalable.
2.12.3 Speaker outputs
2.12.3.1 Speaker 2 Outputs
Pin description
Signal
Pin #
I/O
I/O type
Description
SPK2P
45
O
Analog
Speaker 2 positive output
SPK2N
47
O
Analog
Speaker 2 negative output
2.12.3.2 Speaker 1 Outputs
Pin description
Signal
Pin #
I/O
I/O type
Description
SPK1P
41
O
Analog
Speaker 1 positive output
SPK1N
43
O
Analog
Speaker 1 negative output
2.12.4 Buzzer Output
The buzzer output is a digital one. A buzzer can be directly connected between
this output and VBATT. The maximum current is 80 mA (PEAK). A diode
against transient peak voltage must be connected as described below.
C1
D1
VBATT
Figure 8 : Buzzer connection
R1 must be chosen in order to limit the current at I
PEAK
max.
C1 = 0 to 100 nF (depending on the buzzer type).
Recommended characteristics for the buzzer :
Type : electro-magnetic.
Impedance : 7 to 30
Sensitivity : 90 dB SPL min @ 10 cm
Pin description
Signal
Pin #
I/O
I/O type
Description
BUZ
49
O
Analog
Buzzer output
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