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4.1. Front panel
Power Indicator:
Power (PWR):
V35 interface Indicator:
TD Green: Flashing: when there is data flow of TD signal (sending data) at the V.35
interface. The Flashing frequency differs with the interface rate of V.35. When it is 64Kbps,
the Flashing frequency is the lowest; when it is 2048Kbps, the Flashing rate is the highest.
Off: there is no data flow of TD signal at the V.35 interface.
RD Green: Flashing: when there is data flow of RD signal (receiving data) at the V.35
interface. The Flashing frequency differs with the interface rate of V.35. When it is 64Kbps,
the Flashing frequency is the lowest; when it is 2048Kbps, the Flashing rate is the highest.
Off: there is no data flow of RD signal at the V.35 interface.
Test status Indicator:
TEST yellow:
On: bit error test function is enabled. In the fractional mode, the local or
remote loop-back function is correctly set. In the transparent mode, the local loop-back
function is correctly set.
Flashing: bit error test function is enabled. In the fractional mode, the
local or remote loop-back function is wrongly set. In the transparent mode, the local
loop-back function is wrongly set.
Off: bit error test function is disabled.
LOOP yellow:
On: The loop-back is at the local site.
Flashing: The loop-back is at the opposite site (only effective when the
Off: No loop-back
PAT yellow:
On: when receiving pseudo random series from the BERT unit, and there
Off: when receiving pseudo random series from the BERT, but when
Off: Bit error test function is disabled.
4. User Manual
Sketch of the front panel
On: power is working in good condition
Off: Power is off.
E1 is fractional)
is no bit error on line.
there is bit error on line, it goes off for at least 1 second.
7
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