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ADC HiGain H2TU-C-231 List 1 Quick Installation page 6

Line unit
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Display Code
Description (normal operating messages in bold)
A=xx
The loop attenuation of the span (maximum loss) , measured in dB.
ACQ
The multiplexers of the H2TU-C-231 and H2TU-R are trying to establish synchronization.
AnL
The multiplexers of the two devices on the span are trying to establish synchronization with
each other, where n is the number of the span.
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.
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.
SnL
The transceivers of the two devices on the span are trying to establish contact with each
other, where n is the number of the span.
Table 4. Front-Panel Configuration Options Using MODE and SEL
Display Code
Description (default values in bold)
EQL
Sets the DSX-1 Equalizer to: EXT (replaces the internal equalizer with an external
equalizer), 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 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.
ALM
Enables (ENA) or disables (DIS) alarm indications on pins 20 and 21.
DS1
DSX-1 line code = AUTO, Bipolar with 8-Zero Substitution (B8ZS), Alternate Mark
Inversion (AMI).
FRMG
DS1 frame formatting = AUTO (auto framing mode) or UNFR (unframed mode),
RDA
Enables (ENA) or disables (DIS) alarm indications due to remote DS1 LOS at H2TU-R input.
ALMP
Enables system to output an alarm pattern: Alarm Indication Signal (AIS) or Loss of Signal
(LOS).
BPVT
Enables (ENA) or disables (DIS) Bipolar Violation Transparency (BPVT).
NLBP
Enables the H2TU-R to transmit either AIS or LOS towards 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.
(a) Front-panel configuration options display in the order listed.
Table 5. Front-Panel System Information Messages (Scroll Mode)
Code
Description
CODE xxxx
Line code setting (AUTO, AMI,
B8ZS).
FRM xxxx
Frame pattern received from the
DSX-1 (SF, ESF, UNFR).
LATT xx
Loop attenuation (0 to 40 dB).
Default is 35.
(a) To scroll through system information messages, press the MODE button for 3 or more seconds.
Table 3. Front-Panel Diagnostic Messages
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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