RFL 107460-1, Instruction Data

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RFL C37.94FSU RFL Electronics Inc.
May 20, 2013 17 (973) 334-3100
Table 5. continued - Controls and indicators, Fiber Service Unit (107460-5 and 107460-5-1)
Location
Reference
Designation
Function
On ECB
No. 107463-5
Board B J203, J205 Used to ground the outer conductor of the BNC connectors when necessary.
Both jumpers should be set to “U” when using the DB-15 E1 port.
J203 is set to “G” and J205 is set to “U” when using the BNC E1 ports
J204 120 ohm E1 port (DB-15 male connector) Refer to Table 8 for interface
connections
J206 75 ohm E1 TX port (BNC connector)
J207 75 ohm E1 RX port (BNC connector)
SW201 Selects impedance of E1 port as follows:
Set to 75 when using 75-ohm BNC ports
Set to 120 when using 120-ohm DB-15 port
SW203 Used to set E1 operating parameters as follows:
SW203-1 Selects Timing Mode
ON = Thru timing
OFF = Internal timing
SW203-2 For factory use only (Switch must be set to ON position)
SW203-3 Selects Normal operation or Transmit all ones, on E1 port.
ON = Normal operation (default setting)
OFF = Transmit all ones
SW203-4 Enables or disables jitter attenuator
ON = Disable jitter attenuator
OFF = Enable jitter attenuator (default setting)
SW203-5 Jitter attenuator selection
ON = Receiver (default setting)
OFF = Transmitter
SW203-6 Selects inverted data
ON = Inverted data
OFF = Normal operation (default setting)