Patton electronics 2703RC-A User Manual page 4

3.1 DIP Switches S1 - S8
The configuration switches on S1 - S8 may be used to set data
inversion, the DTE bit rate, and clocking modes. Default settings of S1
through S8 are shown in the table below. Descriptions of each switch
follow the table.
SWITCH SUMMARY TABLE
Position Function
S1 Data Inversion
S2 Rate Adaptation (DTE Rate)
S3 Rate Adaptation (DTE Rate)
S4
Reserved
S5
S6 Clock Mode
S7
Reserved
S8
Switch S1: Data Inversion
Set Switch S1 to determine whether or not the data stream from
the local DTE is inverted within the Model 2703RC-A before being
passed to the G.703 network. You may need to invert the data stream
when you use the Model 2703RC-A with an imbedded G.703 device
that inverts the data on the remote end. Data inversion is typically not
necessary.
S1-1 Setting
On Data inverted
Off Data not inverted
NOTE: The PCM data stream must be inverted if this Model
2703RC-A is to be connected to a standalone Model 2703
Firmware Revision B (or older) unit at 256, 512, and 1024 kbps.
The firmware version of the standalone 2703 is printed on the
bottom side of the unit.
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Factory Default
Off Non-Inverted
Off
}
2.048 Mbps
Off
Off
Off
Off Network
Off
Off
Switches S2 and S3: Rate Adaptation (DTE Rate)
Set Switches S2 and S3 together to allow the Model 2703RC-A to
adapt to terminal devices that run at data rates less than 2.048 Mbps
(The network rate remains 2.048 Mbps regardless of the terminal rate
adaptation setting). The setting you select must match the data rate of
your terminal device.
S2 S3 Setting
Off Off 2.048 Mbps
On Off 1.024 Mbps
Off On 512 Kbps
On On 256 Kbps
Switches S4 and S5: Reserved for Future Use
Switches S4 and S5 are reserved for future use and must remain
in the Off position.
Switch S6: Internal/Network Clock
Set Switch S6 to allow the Model 2703RC-A to provide an internal
clock, or recover the clock from the received G.703 input signal.
S6 Setting
On Model 2703RC-A clock is internal
Off Model 2703RC-A clock is recovered from the network
NOTE: The 2703RC-A does not support an external (DTE
Source) clock option.
Switches S7 and S8: Reserved for Future Use
Switches S7 and S8 are reserved for future use and must remain
in the Off position.
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