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4.1.3 Default settings
The default status of the Bit 1 and Bit 2 of SW5 is ON. The settings of Bit 5~8 of SW6 follow the
rule in the table below according the optical transceivers the device applies. The factory setting for
the bits of SW7 is ON, ON, ON, OFF, that is, the E1 interface is a 75Ω unbalanced interface. The
default status of all other switches is OFF.
SW6-5 SW6-6 SW6-7 SW6-8 Optical transceiver
ON
ON
ON
ON
ON
ON
ON
ON
The meaning of the default settings:
The device works in transparent mode and follows line-in clock. The timeslot auto-following
function, bit error testing function and all loopback testing function are disabled on the device. The
RX CLK phase of the V.35 interface is positive. The E1 interface is 75Ω unbalanced interface.
ON
ON
ON
ON
ON
OFF
ON
OFF
ON
ON
OFF
OFF
OFF
ON
ON
OFF
ON
OFF
OFF
OFF
ON
OFF
OFF
OFF
M (1310 Tx and Rx)
S1 (1310 Tx and Rx)
S2 (1310 Tx and Rx)
S3 (1550 Tx and Rx)
SS13 (1310 Tx, 1550 Rx)
SS15 (1550 Tx, 1310 Rx)
SS23 (1310 Tx, 1550 Rx)
SS25 (1550 Tx, 1310 Rx)
User Manual
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