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5.0 OPERATION
Once the Model 1052 is properly configured and installed, it should oper-
ate transparently. This sections describes power-up, reading the LED
status monitors, and using the built-in loopback test modes.
5.1 POWER-UP
Before applying power to the Model 1052, read section 4.3, “Power Con-
nection” on page 13 to ensure that the unit is connected to the appropri-
ate power source.
5.2 LED STATUS MONITORS
The Model 1052 features five side panel LEDs (see Figure 7). Table 2
describes the function of each LED.
Figure 7.
Model 1052 side panel LEDs
Table 2:
LED descriptions
LED
Description
TXD
(Active: Green) When lit, indicates data transmission.
RXD
(Active: Green) When lit, indicates data transmission.
DSL LINK
(Active: Green) When lit, indicates that the end-to-end DSL
framer link is up, signifying that the link across the DSL span
is active. The DSL Link LED is off when the link is down.
NS
(Active: Yellow) When the No Signal LED is lit, it indicates
that the local Model 1052 is not connected with the remote
Model 1052
ER
(Active: Red) Flashing red indicates that there are CRC errors
on the DSL (framer) side if the DSL Link is active. ER flashes
once to indicate a CRC error during normal operation