After I updated to API 2.09 and newest SoapySDRPlay from github the DC correction does not work any more. I see a DC spike in the spectrum which was not the case with the API 1.97.
If I enable DC removal in gqrx, I get the following output on the console:
Code: Select all
mir_sdr_StreamUninit()
mir_sdr_2500_Readback001Trim: readback = 0xcc19a0f
mir_sdr_2500_Bypass001Trim: reg13=0x1ed reg14=0x3031ae
mir_sdr_StreamInit()
mir_sdr_Init: starting hardware initialization
mir_sdr_Init: gR=20dB fs=2,000MHz rf=5,350MHz bw=0,200MHz if=0,000MHz
DownConvert: Enable=0 DecM=1 OutScale=0 (fs=2,000000 bw=200 if=0)
mir_sdr_usb_USB DLL: Revision 0.1.1
mir_sdr_2500_Init: fnaddr = 7
mir_sdr_2500_Init: adjusting squelch trim 0x1, rx gating enable 1, tx_trim 0, reg2 = 0x4801
initHw: Register7 = 0x000014
initRfFreqDependentHw(1): Tuner Register0 = 0x043e10
mir_sdr_SetFs: Sample Freq requested 2000000,000000
mir_sdr_SetFs: Fs->FsNomHz+dFsHz=2000000,0+0,0Hz=2000000,0Hz FsToggle->1
mir_sdr_SetRf: f->125350000,000Hz (int=14 frac=a73 afc=0) fSynth:2005600000,000
mir_sdr_SetRf: Rf->RfNomHz+dRfHz+LifHz+Lif1Hz=5350000,0+0,0+0,0Hz+120000000,0Hz=125350000,0Hz RfToggle->1
mir_sdr_SetGr: GR->20[20,0,0,0] gRset->0x14 DCCALmode=3 DCCALspd=0 GrToggle->1
setToggleStates: initialising sampNum=0x00017a02, gainSetting=0x014, FsToggle=0, RfToggle=0, GrToggle=0
setToggleStates: initialising Fs=2000000,000, Rf=125350000,000, Gr=20
mir_sdr_RSP_SetGr: in: 20 1 1 0
mir_sdr_RSP_SetGr: GR->20[20,0,0,24] gRset->0xD4 DCCALmode=3 DCCALspd=0 GrToggle->1
mir_sdr_RSP_SetGr: out: 20 44 1
mir_sdr_DecimateControl: 1 4 0
mir_sdr_DecimateControl: DecimateEnable=1, DecimateDecM=4, DecimateOutScale=2, DecimateRound[0]=0x00000002, DecimateRound[1]=0xfffffffe
mir_sdr_SetDcMode: DCCAL: mode->4 speedup->0
mir_sdr_SetDcTrackTime: DCTRK_TIM->63
DCcoeff=0,001500 adj_for_Fs=0,001500 Fs=2000000,000
AGCcoeff=0,290000 adj_for_Fs=0,290000 Fs=2000000,000
adj_for_PktSz=0,290000 PktSz=252
mir_sdr_ReadPacket: Gain update confirmed: Gr=20dB GrToggle=1 gset=0xd4
grChanged @ 118
DCoffsetCorrection: switched to tracking mode diff=119 curr=1490,94 last=1371,24
Code: Select all
mir_sdr_StreamUninit()
mir_sdr_2500_Readback001Trim: readback = 0xcc19a0f
mir_sdr_2500_Bypass001Trim: reg13=0x1ed reg14=0x3031ae
mir_sdr_StreamInit()
mir_sdr_Init: starting hardware initialization
mir_sdr_Init: gR=20dB fs=2,000MHz rf=5,350MHz bw=0,200MHz if=0,000MHz
DownConvert: Enable=0 DecM=1 OutScale=0 (fs=2,000000 bw=200 if=0)
mir_sdr_usb_USB DLL: Revision 0.1.1
mir_sdr_2500_Init: fnaddr = 7
mir_sdr_2500_Init: adjusting squelch trim 0x1, rx gating enable 1, tx_trim 0, reg2 = 0x4801
initHw: Register7 = 0x000014
initRfFreqDependentHw(1): Tuner Register0 = 0x043e10
mir_sdr_SetFs: Sample Freq requested 2000000,000000
mir_sdr_SetFs: Fs->FsNomHz+dFsHz=2000000,0+0,0Hz=2000000,0Hz FsToggle->1
mir_sdr_SetRf: f->125350000,000Hz (int=14 frac=a73 afc=0) fSynth:2005600000,000
mir_sdr_SetRf: Rf->RfNomHz+dRfHz+LifHz+Lif1Hz=5350000,0+0,0+0,0Hz+120000000,0Hz=125350000,0Hz RfToggle->1
mir_sdr_SetGr: GR->20[20,0,0,0] gRset->0x14 DCCALmode=3 DCCALspd=0 GrToggle->1
setToggleStates: initialising sampNum=0x00017a02, gainSetting=0x014, FsToggle=0, RfToggle=1, GrToggle=0
setToggleStates: initialising Fs=2000000,000, Rf=125350000,000, Gr=20
mir_sdr_RSP_SetGr: in: 20 1 1 0
mir_sdr_RSP_SetGr: GR->20[20,0,0,24] gRset->0xD4 DCCALmode=3 DCCALspd=0 GrToggle->1
mir_sdr_RSP_SetGr: out: 20 44 1
mir_sdr_DecimateControl: 1 4 0
mir_sdr_DecimateControl: DecimateEnable=1, DecimateDecM=4, DecimateOutScale=2, DecimateRound[0]=0x00000002, DecimateRound[1]=0xfffffffe
mir_sdr_SetDcMode: DCCAL: mode->4 speedup->0
mir_sdr_SetDcTrackTime: DCTRK_TIM->63
DCcoeff=0,001500 adj_for_Fs=0,001500 Fs=2000000,000
AGCcoeff=0,290000 adj_for_Fs=0,290000 Fs=2000000,000
adj_for_PktSz=0,290000 PktSz=252
mir_sdr_ReadPacket: Gain update confirmed: Gr=20dB GrToggle=1 gset=0xd4
grChanged @ 126
DCoffsetCorrection: switched to tracking mode diff=57 curr=1293,51 last=1350,60
Wolf, DK7OB