Front Panel Diagnostic Messages (normal operating messages in bold)
Display Code
Description (normal operating messages in bold)
(a)
A=xx
The loop attenuation of the longest (maximum loss) span, measured in dB.
ACQ
The multiplexers of the H2TU-C and H2TU-R are trying to establish synchronization.
ARM
Armed to respond to Intelligent Repeater Loop (ILR) codes.
BAD RT?
The H2TU-C is not receiving a response from the H2TU-R.
FERR
A framing bit error occurred at H2TU-C DSX-1 input.
FLDL
Flash download of firmware updates. (Contact Customer Service for update procedures.)
HES
H2TU-C HDSL2 loop cyclical redundancy check (CRC) error.
LBPV
A local bipolar violation has been received at the DSX-1 input to the H2TU-C.
(a)
M=xx
Indicates the power of the received HDSL2 signal relative to noise (S/N with respect to
21.5 dB). Any value of 6 dB or greater is adequate for reliable system operation.
MNGD
The H2TU-C is under control of the HMU-319 network management unit.
PWR FEED OFF
HDSL2 span power is turned off.
PWR FEED ON
Indicates that the HDSL2 loop is not grounded or shorted.
SIG
The transceivers of the H2TU-C and H2TU-R are trying to establish contact with each
other on the HDSL2 loop.
(a) Normal operating range.
Front-Panel Configuration Options Using MODE and SEL
Display Code
Description (default values in bold)
EQL
Sets the DSX-1 Equalizer to: 0 (0 to 133 ft.), 133 (133 to 266 ft.), 266 (266 to 399 ft.),
399 (399 to 533 ft.), 533 (533 to 655 ft.).
RLBO
Sets the H2TU-R line buildout to 0 dB, -7.5 dB, or -15 dB.
LPBK
Enables (ENA) or disables (DIS) SmartJack loopback commands.
SPLB xxxx
Configures the system for generic (GNLB) or special inband loopback commands (A1LB,
A2LB, A3LB, A4LB, A5LB).
PWRF
OFF = disables HDSL2 powering. ON = HDSL2 line voltage is -185 Vdc maximum.
HBER
1E-6 or 1E-7 = alarm activates when the HDSL2 BER alarm threshold exceeds 10
NONE = prevents generation of a system alarm due to BER.
DBER
Enables (ENA) or disables (DIS) fixed 24-hour DSX-1 BER alarm threshold.
LBTO
Loopback timeout = NONE, 20, 60, 120 minutes; 8 hours, 24 hours.
DS1
DSX-1 line code = AUTO, B8ZS, AMI.
FRMG
DS1 frame formatting = AUTO (auto framing mode), UNFR (unframed mode), SF
(SuperFrame) and ESF (Extended SuperFrame).
RDA
Enables (ENA) or disables (DIS) alarm indications due to remote DS1 LOS at the H2TU-R
input.
ALMP
Enables system to output an alarm pattern: AIS or LOS.
BPVT
Enables (ENA) or disables (DIS) Bipolar Violation Transparency.
NLBP
Enables the H2TU-R to transmit either AIS or LOS towards the CI for any network loopback.
TLOS
Enables (ENA) or disables (DIS) a logic loopback at the H2TU-R when an LOS occurs at its
DS1 input.
RTPV
Enables (ENA) or disables (DIS) remote provisioning.
PBON
Configures the power output levels of the H2TU-C network unit toward the customer to
comply with Default (DEF) or Enhanced (ENH) templates.
PBOC
Configures the power output levels of the H2TU-C customer unit toward the network to
comply with Default (DEF) or Enhanced (ENH) templates.
(a) Front panel configuration options display in the order listed.
Front-Panel System Information Messages (Scroll Mode)
Code
Description
CODE xxxx
FRM xxxx
LATT xx
(a) To scroll through system information messages, press the MODE button for 3 or more seconds.
Line code setting (AMI, B8ZS).
Frame pattern received from the
DSX-1 (SF, ESF, UNFR).
Loop attenuation threshold
(0 to 40 dB). Default is 35.
Code
Description
LIST xx
Product list number.
MARG xx
Margin threshold (0 to 15 dB).
Default is 4.
VER x.xx
Firmware version.
(a)
-6
-7
or 10
.
(a)
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