User guide
Table Of Contents
- Presentation
- Warning
- Copyright
- 1 References
- 2 Packaging
- 3 General presentation
- 4 Characteristics and Services
- 5 Use of the modem
- 5.1 Starting with the modem
- 5.2 Specific recommendations for the use of the modem in vehicles
- 5.3 GSM led of the modem
- 5.4 Echo function of AT commands deactivated
- 5.5 Checking the quality of the GSM reception signal
- 5.6 Verification of PIN code
- 5.7 Verification of modem registration on GSM network
- 5.8 Verification of modem registration on GPRS network
- 5.9 Verification of internal voltages of the modem
- 5.10 Main AT commands (HAYES)
- 5.11 Turning OFF the modem
- 5.12 Updating procedure of the modem
- 6 Trouble Shooting
- 7 Functional description
- 8 Technical characteristics
- 8.1 Mechanical characteristics
- 8.2 Electrical characteristics
- 8.3 Environmental characteristics
- 8.4 Standards/Conformities
- 9 Security recommendations
- 10 Recommended accessories
- 11 Client support
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Descriptions and non-contractual illustrations in this document are given as an indication only.
ERCO & GENER reserves the right to make any modification.
Dct_427_01
8.2.5 Inputs/Output
By default, the GenPro 25e provides 3 opto-coupled inputs (I1 to I3) and 1 open-collector output (O1).
As an option, it is possible to have an analog input instead of the opto-coupled input I2.
8.2.5.1 Opto-coupled inputs (I1, I2, I3)
Table 36 : Diode characteristics of opto-coupled inputs
Characteristics Symbols Conditions Min. Typ. Max. Unit
Max. current I
F (rms)
50 mA
Max. inverted voltage V
R
5 V
Direct voltage V
F
I
F
= 10 mA 1.0 1.15 1.3 V
Inverted current I
R
V
R
= 5 V 10 µA
Capacity C
T
V=0, f = 1 MHz --- 30 --- pF
Transfer ratio I
C
/ I
F
I
F
= 5 mA, V
CE
= 5 V 50 --- 600 %
Saturation of transfer ratio I
C
/ I
F (SAT)
I
F
= 1 mA, V
CE
= 0.4 V 60 %
Command voltage 3,5 35 V
Idle voltage 1 V
Figure 26 : internal electrical scheme of the 3 inputs
The minimum command voltage for the detection is: 3,5 V
The maximum command voltage is: 35 V