User Manual
11-20
2.2.5 Settings of SW
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Summary
An 8-bit switch is located on the back panel, signed by “SW”, defined as
follows (from left to right):
SW
CLOCK
PHASE
LOOP
PATT FOLLOW
BIT 1 2 3 4 5 6 7 8
DEFAULT
ON ON OFF OFF
OFF
OFF
OFF ON
TITLE
SW-1
SW-2 SW-3 SW-4
SW-5
SW-6
SW-7 SW-8
Table 7. Default settings of SW
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CLOCK Settings (SW-1, SW-2)
CLOCK SETTINGS
SW-1 (close the power)
SW-2
Clock mode
ON
ON
INTERNAL clock (default)
OFF
ON
LINE clock (follow the opposite device
Time Slot settings)
OFF OFF EXTERNAL
clock
Table 8. Clock settings
Internal clock (ON, ON):
The clock generated by internal oscillator.
Line clock (OFF, ON):
The clock recovered from receiving E1
signal, under this settings the device can
auto follow the opposite device Time slot
settings if the opposite device is INTERNAL
clock.
External clock (OFF,OFF):
The clock obtains from V.35 port of
DTE/DCE device connected to.
NOTE:
1)
Guarantee that there is only one Internal clock device in one chain.
2)
Avoid that all device in one chain don’t set as Line clock. If it is
specific that Internal clock exist in chain, set the device Line clock. If
not, set the device as Internal clock.
3)
When connected with DCE/DTE device and DCE/DTE device
generate clock, FE1/V.35 Interface Converter set as External clock.
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Phase setting(SW-3)
Bit 3 of SW in rear panel is used to set V.35 data phase. FE1/V.35 Interface
Converter can auto detect the phase of receiving data. The phase of
transmittal data can be set by this switch. Defied as below:
