SIERRA WIRELESS AirLink LX40 Enterprise LTE Router User Guide

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AirLink LX40 Series Hardware User Guide  

LX40  

Vin  

Internal pull-up  

resistor  

Pin 4 (power connector)  

Off (default)*  

Zinꢀ!ꢀꢁꢂꢀNſ  

+

–

Protection  

Circuitry  

Output Off (default)*  

* Configurable on the ACEmanager I/O tab  

Solar panel or battery  

Figure 2-15: Analog Input  

Table 2-6: Analog Input  

Pull-up  

Minimum  

Typical  

Maximum  

Off  

Analog Input Range  

0.5 V  

—

5 V, 10 V  

(configurable)  

Analog Input Accuracy -1.5%  

0.50%  

1.5%  

Data sampling is handled by a dedicated microprocessor. In order to filter noisy signals,  

twenty measurements are taken over a 250 ms interval. The measurements are averaged  

to generate a sample. If the change since the last sample is significant, a notification is  

sent to the CPU for updating the current value displayed in the user interface and for use  

by Events Reporting.  

Changes are considered significant if the change is 200 mV or more (when the range of  

monitored voltage is 0–5 V) or 350 mV or more (when the range of monitored voltage is  

0–10 V). If there has not been a significant change to the parameter being monitored, the  

CPU reads a sample every 2.5 minutes, which detects small changes.  

When a reading is received,  

Updates UI  

Events Reporting  

Sample every 250 ms,  

based on 20 measurements  

Analog input  

Pin 4 on the power connector  

Reading from the CPU  

when change is significant  

or 2.5 minutes has passed  

with no change  

Microprocessor  

CPU  

Figure 2-16: Analog Input Sampling and Reading  

Note: The same method is used to sample the input voltage and the internal board temperature for  

Events Reporting. The significant changes are 300 mV for the input voltage and 1 ºC for the board  

temperature.  

Rev. 4 January 2022  

28  

41112510  

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General	Details
Name	SIERRA WIRELESS AirLink LX40 Enterprise LTE Router User Guide
Make	SIERRA WIRELESS
Language	English
Filetype	PDF (Download)
File size	0.96 MB

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