LMS TxLO noise

Thomas Tsou thomastsou at gmail.com
Sun Jul 22 19:11:13 UTC 2012


On Sun, Jul 22, 2012 at 10:12 AM, Andrey Sviyazov
<andrey.sviyazov at fairwaves.ru> wrote:
> Hi Thomas.
>
> It is very good new.
> Please let us know more information how you wins!
> I mean which PLL filter, ICP and other LMS paremeters do you use or its done
> by just only IQ balance correction and Laurent C1 pulse and all other by
> default?

Register dump and startup sequence are attached. LO leakage was also
recalibrated for different frequencies.

For comparison, after C1 pulse is added USRP1 is 1.3/3.5 and USRP2 is
1.2/3.0 when measured at 925 MHz.

  Thomas
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# 0x00: LMS1=0x1D 	LMS2=0x17	DIFF
# 0x01: LMS1=0xF5 	LMS2=0xE9	DIFF
# 0x02: LMS1=0x1F 	LMS2=0x1F	OK
# 0x03: LMS1=0x08 	LMS2=0x08	OK
# 0x04: LMS1=0x22 	LMS2=0x22	OK
# 0x05: LMS1=0x3A 	LMS2=0x32	DIFF
# 0x06: LMS1=0x0D 	LMS2=0x0D	OK
# 0x07: LMS1=0x0F 	LMS2=0x0F	OK
# 0x08: LMS1=0x00 	LMS2=0x00	OK
# 0x09: LMS1=0x81 	LMS2=0x80	DIFF
# 0x0A: LMS1=0x00 	LMS2=0x00	OK
# 0x0B: LMS1=0x08 	LMS2=0x08	OK
# 0x0C: LMS1=0x16 	LMS2=0x21	DIFF
# 0x0D: LMS1=0x6E 	LMS2=0xBD	DIFF
# 0x0E: LMS1=0x01 	LMS2=0x01	OK
# 0x0F: LMS1=0x00 	LMS2=0x00	OK
# 0x10: LMS1=0x48 	LMS2=0x62	DIFF
# 0x11: LMS1=0xB1 	LMS2=0x76	DIFF
# 0x12: LMS1=0x3B 	LMS2=0x27	DIFF
# 0x13: LMS1=0x13 	LMS2=0x62	DIFF
# 0x14: LMS1=0x88 	LMS2=0x88	OK
# 0x15: LMS1=0x95 	LMS2=0xBD	DIFF
# 0x16: LMS1=0x93 	LMS2=0x8C	DIFF
# 0x17: LMS1=0xE0 	LMS2=0xE0	OK
# 0x18: LMS1=0x40 	LMS2=0x40	OK
# 0x19: LMS1=0x8E 	LMS2=0xAE	DIFF
# 0x1A: LMS1=0x03 	LMS2=0x03	OK
# 0x1B: LMS1=0x76 	LMS2=0x76	OK
# 0x1C: LMS1=0x38 	LMS2=0x38	OK
# 0x1D: LMS1=0x40 	LMS2=0x40	OK
# 0x1E: LMS1=0x00 	LMS2=0x00	OK
# 0x1F: LMS1=0x00 	LMS2=0x00	OK
# 0x20: LMS1=0x41 	LMS2=0x41	OK
# 0x21: LMS1=0x20 	LMS2=0x20	OK
# 0x22: LMS1=0x00 	LMS2=0x00	OK
# 0x23: LMS1=0x00 	LMS2=0x00	OK
# 0x24: LMS1=0x88 	LMS2=0x88	OK
# 0x25: LMS1=0xB1 	LMS2=0xB1	OK
# 0x26: LMS1=0x8C 	LMS2=0x8C	OK
# 0x27: LMS1=0xE3 	LMS2=0xE3	OK
# 0x28: LMS1=0x40 	LMS2=0x40	OK
# 0x29: LMS1=0x94 	LMS2=0x94	OK
# 0x2A: LMS1=0x03 	LMS2=0x03	OK
# 0x2B: LMS1=0x76 	LMS2=0x76	OK
# 0x2C: LMS1=0x38 	LMS2=0x38	OK
# 0x2D: LMS1=0x40 	LMS2=0x40	OK
# 0x2E: LMS1=0x00 	LMS2=0x00	OK
# 0x2F: LMS1=0x00 	LMS2=0x00	OK
# 0x30: LMS1=0x21 	LMS2=0x25	DIFF
# 0x31: LMS1=0x09 	LMS2=0x08	DIFF
# 0x32: LMS1=0x1F 	LMS2=0x1F	OK
# 0x33: LMS1=0x09 	LMS2=0x09	OK
# 0x34: LMS1=0x3E 	LMS2=0x3E	OK
# 0x35: LMS1=0x1D 	LMS2=0x17	DIFF
# 0x36: LMS1=0x70 	LMS2=0x70	OK
# 0x37: LMS1=0x41 	LMS2=0xCA	DIFF
# 0x38: LMS1=0x87 	LMS2=0x9E	DIFF
# 0x39: LMS1=0x5D 	LMS2=0x7D	DIFF
# 0x3A: LMS1=0xE7 	LMS2=0x4F	DIFF
# 0x3B: LMS1=0x0D 	LMS2=0xCF	DIFF
# 0x3C: LMS1=0x7E 	LMS2=0xCE	DIFF
# 0x3D: LMS1=0x93 	LMS2=0x0E	DIFF
# 0x3E: LMS1=0x00 	LMS2=0x00	OK
# 0x3F: LMS1=0x11 	LMS2=0x00	DIFF
# 0x40: LMS1=0x02 	LMS2=0x02	OK
# 0x41: LMS1=0x15 	LMS2=0x15	OK
# 0x42: LMS1=0x67 	LMS2=0x80	DIFF
# 0x43: LMS1=0x89 	LMS2=0x80	DIFF
# 0x44: LMS1=0x13 	LMS2=0x0B	DIFF
# 0x45: LMS1=0xC8 	LMS2=0x00	DIFF
# 0x46: LMS1=0x00 	LMS2=0x00	OK
# 0x47: LMS1=0x40 	LMS2=0x40	OK
# 0x48: LMS1=0x0C 	LMS2=0x0C	OK
# 0x49: LMS1=0x0C 	LMS2=0x0C	OK
# 0x4A: LMS1=0x18 	LMS2=0x18	OK
# 0x4B: LMS1=0x50 	LMS2=0x50	OK
# 0x4C: LMS1=0x00 	LMS2=0x00	OK
# 0x4D: LMS1=0x00 	LMS2=0x00	OK
# 0x4E: LMS1=0x00 	LMS2=0x01	DIFF
# 0x4F: LMS1=0x01 	LMS2=0x00	DIFF
# 0x50: LMS1=0x1F 	LMS2=0x09	DIFF
# 0x51: LMS1=0x00 	LMS2=0x14	DIFF
# 0x52: LMS1=0x1F 	LMS2=0x1F	OK
# 0x53: LMS1=0x08 	LMS2=0x09	DIFF
# 0x54: LMS1=0x02 	LMS2=0x02	OK
# 0x55: LMS1=0x1D 	LMS2=0x17	DIFF
# 0x56: LMS1=0x70 	LMS2=0x70	OK
# 0x57: LMS1=0x94 	LMS2=0x94	OK
# 0x58: LMS1=0x00 	LMS2=0x00	OK
# 0x59: LMS1=0x09 	LMS2=0x09	OK
# 0x5A: LMS1=0x20 	LMS2=0x20	OK
# 0x5B: LMS1=0x00 	LMS2=0x00	OK
# 0x5C: LMS1=0x00 	LMS2=0x00	OK
# 0x5D: LMS1=0x40 	LMS2=0x00	DIFF
# 0x5E: LMS1=0x00 	LMS2=0x00	OK
# 0x5F: LMS1=0x1F 	LMS2=0x5F	DIFF
# 0x60: LMS1=0x1F 	LMS2=0x19	DIFF
# 0x61: LMS1=0x00 	LMS2=0x1C	DIFF
# 0x62: LMS1=0x1F 	LMS2=0x1F	OK
# 0x63: LMS1=0x08 	LMS2=0x0C	DIFF
# 0x64: LMS1=0x32 	LMS2=0x32	OK
# 0x65: LMS1=0x01 	LMS2=0x01	OK
# 0x66: LMS1=0x00 	LMS2=0x00	OK
# 0x67: LMS1=0x00 	LMS2=0x00	OK
# 0x68: LMS1=0x01 	LMS2=0x01	OK
# 0x69: LMS1=0xF6 	LMS2=0x89	DIFF
# 0x6A: LMS1=0x7F 	LMS2=0x7E	DIFF
# 0x6B: LMS1=0x7B 	LMS2=0xBF	DIFF
# 0x6C: LMS1=0xAF 	LMS2=0xDD	DIFF
# 0x6D: LMS1=0xAE 	LMS2=0x4F	DIFF
# 0x6E: LMS1=0x00 	LMS2=0x00	OK
# 0x6F: LMS1=0x00 	LMS2=0x00	OK
# 0x70: LMS1=0x01 	LMS2=0x01	OK
# 0x71: LMS1=0x80 	LMS2=0x80	OK
# 0x72: LMS1=0x80 	LMS2=0x80	OK
# 0x73: LMS1=0x00 	LMS2=0x00	OK
# 0x74: LMS1=0x00 	LMS2=0x00	OK
# 0x75: LMS1=0xD0 	LMS2=0xD0	OK
# 0x76: LMS1=0x78 	LMS2=0x78	OK
# 0x77: LMS1=0x00 	LMS2=0x00	OK
# 0x78: LMS1=0x1C 	LMS2=0x1C	OK
# 0x79: LMS1=0x37 	LMS2=0x37	OK
# 0x7A: LMS1=0x77 	LMS2=0x77	OK
# 0x7B: LMS1=0x77 	LMS2=0x77	OK
# 0x7C: LMS1=0x18 	LMS2=0x18	OK
# 0x7D: LMS1=0x00 	LMS2=0x00	OK
# 0x7E: LMS1=0x01 	LMS2=0x10	DIFF
# 0x7F: LMS1=0x00 	LMS2=0x00	OK

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