HL8529 module supports HSPA B2 and B5 (3G) with AT&T carrier, I want to use this module in India.
In which I have queries to address:
Is it possible to use this Module straightforward in India with Airtel as Carrier? Or HL8529 requires having some unlocking to support in India with Airtel carrier.
If it’s not possible to use HL8529 in India with other carriers, then which module is best suitable to use in India? I would prefer to have Option 1, as option 2 will require a lot of rework on my board.
The unit should be able to be used without any modification on Airtel using band 1 (which is what they use) assuming they have coverage. We do not network lock any of our units and there is no approval process that we have to go through so using the latest greatest firmware on the unit should be fine.
I would double check with your local distributor for availability.
Yes you can the only difference between the units is the RF front end, other wise they are the same firmware/command set, etc. Same goes for all of the CF3 compatible units as per the scalability guide.
I have following queries regarding HL8529 3G module design:
If i am not using any kind of Antenna detection circuit in my design, Do i need to connect ADC0 and ADC1 to Ground? If not than is there any thing i need to do if i am not using antenna detection circuit.
I want to calculate the power consumption of my module design, Is there any power consumption (Power profieling) sheet available for HL8529?
Just leave the ADC’s unconnected if you are not using them.
Re the power consumption no there is no ‘profile’, there is the table defining what curent consumption it draws in a given mode but that is it, it is up to the application to put it into the mode that will allow it to meet its current consumption requirements.
Thanks for your reply,
The datasheet mentions only the current consumption at diff states,
To calculate power consumption, i would require current consumption and each states time frame to calculate.
It would be good if you can arrange the details of each states, timing durations.
system sends 200bytes of data every day once. So if i want to calculate power consumption during this 200byte data communication.
I will require either average power consumpiton of module while transmitting 200byte data, (Network registration + sending data+ Acknolodgement)
Or else i would require multiple details like (Network registration time duration+current/peaks during network registration), (peaks Current consumption during data send + duration of it) and (Acknolodge duration and current/peaks during this).
You need to calculate/test for this yourself as it is network and application design dependent i.e. attach times vary between networks, how far are you from the base station/EnodeB as tx power varies depending on power control, what technology are you using 2G or 3G as they have very different consumption, if there is a poor RF match between the unit and the antenna it will have to tx harder, how much bulk capacitance do you have in the system to soak up the transmission current, etc.
The PTS gives the figures for each of these i.e. 2G consumption (worse case), 3G consumption (worst case), etc to allow you to do the calculation based on measurements you carry out with application. We cannot do it for you.
And yes, i undestand that power consumption is totally dependent on application and there are multiple factors that count for.
As you would be knowing, now a days the IoT devices have to be low power. To do so we have to calculate first theoretical power consumption and take certain desicion to tune the design architecture. And to calculate power consumption theoretically, we consider each case in detail as possible, where the datasheet details plays a very crucial role.
Anyways i will generate new topic for the same and let’s hope that we can get some details on it.