Modem Status; Attenuation; Crc Errors; Error Sec - VeEX MTT-14B User Manual

MTT-14B e_Manual D07-00-083P RevA00
• For single ended applications, i.e., STU-R emulation testing
with a DSLAM, use a fixed rate that matches the expected
commercial service rate.
STANDARD (per ITU G.991.2)
Options: ANNEX-A (F1), ANNEX-B (F2)
Select an operating standard.
• ANNEX-A: Describes specifications for G.SHDSL systems
operating under North American network conditions.
• ANNEX-B: Describes specifications for G.SHDSL systems
operating under European network conditions.
Press ESC to return to the main menu.

2.2.1 Modem Status

Use these screens to view real time link parameters. Press
to view the available screens.
08:39:57
>LINK UP 4W STU-R<
MODEM STATUS
ET: 000:05:54

LINE RATE

:1544 kbps X 2
PAYLOAD RATE:1536 kbps X 2
CH1 - STU-C STU-R
CUR SNR MARGIN: 18 dB 16 dB

ATTENUATION

: 1 dB 1 dB
CH2 -

CUR SNR MARGIN: 18

dB 16 dB

ATTENUATION

: 1 dB 1 dB
PRINT STORE RESET RETRAIN
Modem Status screens
provide general performance
information on the STU-C
and STU-R. For the far end
data, "N/A" is displayed.
Note that CH2 status screen
information is only available
in 4-wire mode.
ET: Elapsed Time since RESET (F3), RETRAIN (F4), or ESC is
pressed.
LINE RATE reported in kbps, see Section 2.2-Notes for Payload
and Line Rates.
PAYLOAD RATE reported in kbps, see Section 2.2-Notes for
Payload and Line Rates.
08:39:57
>LINK UP 4W STU-R<
MODEM STATUS
ET: 000:05:54
RETRAINS: 0
CH1 - STU-C

MAX SNR MARGIN : 19

dB

MIN SNR MARGIN : 16

dB

CRC ERRORS

: N/A

ERROR SEC

: N/A
SEVERE ERR SEC : N/A
UNAVAILABLE SEC: N/A

LOSW SEC

: N/A
PRINT STORE RESET
08:39:57
>LINK UP 4W STU-R<
MODEM STATUS
ET: 000:05:54
RETRAINS: 0
CH2 - STU-C

MAX SNR MARGIN : 19

dB

MIN SNR MARGIN : 16

dB

CRC ERRORS

: N/A
ERROR SEC : N/A
SEVERE ERR SEC : N/A
UNAVAILABLE SEC: N/A
LOSW SEC : N/A
PRINT STORE RESET
Figure 5 Modem Status Screens
STU-R
18 dB
13 dB
0
0
0
0
0
RETRAIN
STU-R
18 dB
13 dB
0
0
0
0
0
RETRAIN
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