MTX-IND-V2 Industrial Featured GSM-GPRS terminal modem http://www.matrix.es
MTX-IND-V2 User Manual V.1.1
Page. 28
Subject to change without prior notice
OPTOISOLATED INPUTS
Those inputs are opto-isolated, DRY contact.
If connected to ground GND the value will be a “0”. If open, it will be “1”. We recommend that you do not
apply any voltage. If you do, do not exceed 12V.
3.7.5. Analog-to-Digital Converter (ADC
)
The MTX-IND-V2 has 2 Analog to Digital converters that can be configured to connect to measure voltages
and also to connect current sensors. They can be configured with internal JUMPERs.
Terminal block
FUNCTION
Max Values
33
VEXT
Output voltage
3V 50mA
Direct from TC65i
34
DAC OUT
Output PWM
0-3V
Direct from TC65i
35
ADC2
Configurable 0-20mA
0-2.4
AD2 TC65i
36
ADC1
Configurable 0-20mA
0-2.4
AD1 TC65i
37
AGND
Analog ground for
ADC1 & ADC2
By default, the ADC of the MTX-IND-V2 consists of 2 independent, unbalanced, multiplexed analog inputs
that can be used for measuring external DC voltages in the range of 0mV…+2400mV. The ADC has a
resolution of 12 bits.
It can be configured to measure currents 4-20 mA range. It’s intended to connect to 4-20mA type sensors.
Jumper
Terminal joined
ADC
Mode
JPu1
1-2 joined
ADC1
4-20mA (20mA = 2,4V ADC).
JPu1
3-4 joined
ADC1
4-20mA (20mA = 2,4V ADC).
Terminal block number
Input number
TC65i GPIO
Terminal block 38
IN10
(GPIO10 TC65i)
Terminal block 39
IN9
(GPIO9 TC65i)
Terminal block 40
IN8
(GPIO8 TC65i)
Terminal block 41
IN4
(GPIO4 TC65i)
