The target SNRM is 3, 4, 5 or 6dB.
Broadcom modems tend to sync with a slightly higher SNRM at 3.3, 4.3, 5.3 or 6.3dB.
Although your target SNRM may have been 3dB, the actual SNRM can go up and down after sync is achieved as noise comes and goes on the line.
The target is never below 3dB though.
DLM moves the target SNRM in 1dB steps.
It requires G.INP to be active to go below a 6dB target.
Now that G.INP is active hopefully the DLM will start to lower your target SNRM down towards 3dB.
It usually drops to 5dB around 48 hours after G.INP is enabled, and 4dB after another 48 hours, etc.
Stability is key so best not to fiddle if you want back to 3dB.
J0hn still hasn't dropped the SNR after 48hrs been connected for just over 48hrs now here's the stats below
xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 1
Last initialization procedure status: 0
Max: Upstream rate = 23392 Kbps, Downstream rate = 67752 Kbps
Bearer: 0, Upstream rate = 20000 Kbps, Downstream rate = 68329 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 6.2 7.7
Attn(dB): 12.5 0.0
Pwr(dBm): 12.4 -1.7
VDSL2 framing
Bearer 0
MSGc: -6 20
B: 243 239
M: 1 1
T: 0 64
R: 10 0
S: 0.1137 0.3819
L: 17870 5028
D: 8 1
I: 254 120
N: 254 240
Q: 8 0
V: 0 0
RxQueue: 56 0
TxQueue: 14 0
G.INP Framing: 18 0
G.INP lookback: 14 0
RRC bits: 0 24
Bearer 1
MSGc: 154 -6
B: 0 0
M: 2 0
T: 2 0
R: 16 0
S: 6.4000 0.0000
L: 40 0
D: 3 0
I: 32 0
N: 32 0
Q: 0 0
V: 0 0
RxQueue: 0 0
TxQueue: 0 0
G.INP Framing: 0 0
G.INP lookback: 0 0
RRC bits: 0 0
Counters
Bearer 0
OHF: 0 1778318
OHFErr: 0 847
RS: 1784583992 441077
RSCorr: 14371 0
RSUnCorr: 0 0
Bearer 1
OHF: 18432684 0
OHFErr: 0 0
RS: 184326225 0
RSCorr: 0 0
RSUnCorr: 0 0
Retransmit Counters
rtx_tx: 149664 0
rtx_c: 127 0
rtx_uc: 0 0
G.INP Counters
LEFTRS: 0 0
minEFTR: 68307 0
errFreeBits: 308514666 0
Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 249831033 0
Data Cells: 1143295683 0
Drop Cells: 0
Bit Errors: 0 0
Bearer 1
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 0 0
Data Cells: 0 0
Drop Cells: 0
Bit Errors: 0 0
ES: 13 894
SES: 10 3
UAS: 64 54
AS: 296079
Bearer 0
INP: 50.00 0.00
INPRein: 0.00 0.00
delay: 0 0
PER: 0.00 6.13
OR: 0.01 33.91
AgR: 68398.64 20033.74
Bearer 1
INP: 4.50 0.00
INPRein: 4.50 0.00
delay: 3 0
PER: 16.06 0.01
OR: 79.68 0.01
AgR: 79.68 0.01
Bitswap: 124328/124328 1335/1335
Total time = 1 days 22 hours 38 min 10 sec
FEC: 36633 0
CRC: 5845 1296
ES: 13 894
SES: 10 3
UAS: 64 54
LOS: 1 0
LOF: 9 0
LOM: 0 0
Latest 15 minutes time = 8 min 10 sec
FEC: 1 0
CRC: 0 1
ES: 0 1
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 4 0
CRC: 0 1
ES: 0 1
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 22 hours 38 min 10 sec
FEC: 590 0
CRC: 0 255
ES: 0 180
SES: 0 1
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 1445 0
CRC: 0 321
ES: 0 213
SES: 0 2
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 3 days 10 hours 14 min 37 sec
FEC: 14371 0
CRC: 0 847
ES: 0 617
SES: 0 3
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
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