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

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 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 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 132 ft.), 133 (133 to 265 ft.), 266 (266 to 398 ft.), 399 (399 to 532 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.
FT1 Enables (ENA) or disables (DIS) system response to DDS latching loopback commands for
fractional T1 applications.
SPLB xxxx Configures system for generic (GNLB) or special inband loopback commands (A2LB, A3LB, A4LB).
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 = B8ZS, AMI.
CONV H2TU-R frame format conversion = OFF (framing determined by the DS1 FRMG option),
ACON (autodetection of framing and potential frame conversion at the H2TU-R), or FCON
(autodetection of framing and forced frame format conversion at the H2TU-R).
FRMG DS1 frame formatting = AUTO (auto framing mode) or UNFR (unframed mode).
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 CI for any network loopback.
TLOS Enables (ENA) or disables (DIS) logic loopback at H2TU-R when an LOS occurs at its DS1
input.
RTPV Enables (ENA) or disables (DIS) remote provisioning.
PRM OFF = no enhanced Performance Report Messaging; SPRM = Supplemental PRM;
NPRM = Network PRM; S + N = SPRM + NPRM.
NAIS If ALMP is set to AIS, this option specifies which pattern is sent to the network when a
remote LOS or AIS occurs. CI = AIS-CI sent to the network; AIS = AIS sent to the network.
ROVR Enables (ENA) or disables (DIS) conversion of an ESF DS1 payload (from the network) with
an embedded RAI pattern to an SF-RAI pattern towards the CI at the H2TU-R. CONV option
must be set to FCON or ACON.
RACI Enables (ENA) or disables (DIS) conversion of a DS1 SF-RAI signal received by the H2TU-R to
an SF-RAI-CI signal towards the network.
Table 5. Front-panel System Information Messages (Scroll Mode)
Code Description
CODE xxxx Line code setting (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 List number of the H2TU-C-231.
MARG xx Margin threshold (0 to 15 dB).
Default is 4.
VER x.xx Software version number.
-6 -7
or 10 .
(a)