There are a lot of HP/Agilent 8922M units for sale very cheap (less than US $500).
I know that these devices can simulate a GSM base station, but does that simulation occur over the air, or do I need to connect my handset I am testing to the 8922M with a cable ?
I know I need to get a 8322A expansion for the unit - any other details I should look out for ?
Also, what is an equivalent test unit for WCDMA (3g) base station simulation (I know these will be more expensive).
Thanks.
John Case wrote:
I know that these devices can simulate a GSM base station, but does that simulation occur over the air, or do I need to connect my handset I am testing to the 8922M with a cable ?
It has an N connector for RF output. If you connect an antenna you can test over the air. It can output a fair bit of power, don't have to use that if sitting in front of it.
We did some successful initial tests with one of these at one of the Osmocom User Group meetings maybe a month ago. We briefly discussed that it would be interesting to extract test results from it programmatically, and perhaps also to control it. I don't know if any effort has started in that direction however.
I know I need to get a 8322A expansion for the unit - any other details I should look out for ?
That's the 1800 MHz option, yes? Maybe you want 1900 instead. There are also goodies like the improved performance 10 MHz reference.
//Peter
Peter,
On Sun, 7 Oct 2012, Peter Stuge wrote:
I know I need to get a 8322A expansion for the unit - any other details I should look out for ?
That's the 1800 MHz option, yes? Maybe you want 1900 instead. There are also goodies like the improved performance 10 MHz reference.
The (obsolete) product page for 83220A says " ... expands the capabilities of the Agilent 8922 family to comprehensively test DCS 1800 and PCS 1900 equipment..."
So do I understand that by itself, the unit handles 900 and 850, and the add-on gives it 1800 and 1900 ?
John Case wrote:
I know I need to get a 8322A expansion for the unit - any other details I should look out for ?
That's the 1800 MHz option, yes? Maybe you want 1900 instead. There are also goodies like the improved performance 10 MHz reference.
The (obsolete) product page for 83220A says " ... expands the capabilities of the Agilent 8922 family to comprehensively test DCS 1800 and PCS 1900 equipment..."
So do I understand that by itself, the unit handles 900 and 850, and the add-on gives it 1800 and 1900 ?
Sounds like it - good!
What kind of tests would you like to do? Depending on what you want to do, a different tester may be even better.
//Peter
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John Case -
Peter Stuge