DH30 Product Manual
21
The diagnostics feature is used to troubleshoot echo. This feature gives you
the real time and average readings for:
TERL—Telephone Echo Return Loss
TEC—Telephone Echo Cancellation
TNLR—Telephone Non Linear Processing
AERL—Acoustic Echo Return Loss
AEC—Acoustic Echo Cancellation
ANLR—Acoustic Non Linear Processing
The Telephone Diagnostic Bits (TDB ) and Acoustic Diagnostic Bits (ADB)
readings are reserved for technical support troubleshooting.
To view these readings:
1. Use the
A
rrOw
buttons to display
Echo Canceller
. Press
E
ntEr
.
2. Select D
iagnostics
. Press
E
ntEr
.
3. Use the
A
rrOw
buttons to select the desired readout.
4. Press
E
ntEr
to generate a test signal.
5. Press
E
ntEr
to cycle through
Receive
,
Transmit,
and
Receive
and
Transmit
test signals.
Note: When generating tones during the diagnostic, you must scroll
through all three readouts before the test signal ceases. Pressing Esc will
take you out of the diagnostic, but will not stop the test signal.
When configuring your DH30, you can send a test signal through the moni-
tor (Receive), through the telephone line (Transmit) or through both.
1. Use the
A
rrOw
buttons to display
Echo Canceller
. Press
E
ntEr
.
2. Use the
A
rrOw
buttons to select
Test Signal
. Press
E
ntEr
.
3. Use the
A
rrOw
buttons to select
Receive, Transmit
or
Both
.
4. Press
E
ntEr
to send the test signal.
5. To stop the signal, use the
A
rrOw
buttons to select
Off
.
d
iagnoSticS
t
eSt
S
ignal
