Inband Image Frequency

RE: Inband Image Frequency

Andreas — Mon, 30 Jul 2018 06:28:41 GMT

Hi,

For nRF51822 +4 MHz is correct. I used the wrong document for verification, I apologize for the confusion.

Best regards,

Andreas

RE: Inband Image Frequency

Lynette Sandoval — Thu, 26 Jul 2018 14:30:49 GMT

This is the IXIT that I have for an NRFR5182.

RE: Inband Image Frequency

Lynette Sandoval — Thu, 26 Jul 2018 14:29:21 GMT

Thank you. And that is for all NRF51 that those inband image frequency applies?

RE: Inband Image Frequency

Andreas — Thu, 26 Jul 2018 14:27:32 GMT

Hi Lynette,

nRF51 series is a different architecture, so the inband image frequency is different. It does not support 2Mbps BLE, so only 1 Mbps applies:

Low 1Mbps: +4 MHz
Mid 1Mbps: +4 MHz
High 1Mbps: +4 MHz

Best regards,

Andreas

RE: Inband Image Frequency

Lynette Sandoval — Thu, 26 Jul 2018 14:09:59 GMT

Hi Andreas,

Sorry last question. Is it still -2 for 1MBS and -4 for 2MBS for nRF51822?

Thank you,

Lynette

RE: Inband Image Frequency

Lynette Sandoval — Thu, 26 Jul 2018 13:19:32 GMT

Thank you for the information.

RE: Inband Image Frequency

Andreas — Thu, 26 Jul 2018 08:16:47 GMT

Hi Lynette,

I am referring to the IXIT proforma which you linked. This applies to all NRF52 devices.

RF-PHY:P1:1	-2
RF-PHY:P1:2	-2
RF-PHY:P1:3	-2

RF-PHY:P11:1	-4
RF-PHY:P11:2	-4
RF-PHY:P11:3	-4

The attachment simply seems to specify this as 'With TX on x MHz, what is the inband image frequency', x = 2406 (low), 2440 (mid), 2476 (high).

Best regards,

Andreas

RE: Inband Image Frequency

Lynette Sandoval — Wed, 25 Jul 2018 14:40:45 GMT

Hi Andreas,

Sorry which IXIT are you talking about? Are both -2MHz for 1Mbps and -4MHz for 2Mbps? For future when there are frequencies in the inband image section are they usually -2 and -2?

Thanks,

Lynette

RE: Inband Image Frequency

Andreas — Wed, 25 Jul 2018 14:29:36 GMT

Hi,

Relative to the carrier, it is -2 MHz for 1Mbps, -4 MHz for 2 Mbps.

Best regards,

Andreas