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Switch S1-4: Circuit Assurance
The transmitter and the CTS output can be configured to go On
only when a working communication circuit is established. If Circuit
Assurance is used, enable it on only one end of the communication link.
Circuit Assurance should be enabled in Switched 56 mode.
Circuit
S1-4 Assurance Description
On Enabled CTS will go low and the transmitter
will be held off if the receiver is in
the No Signal state or CD is low
Off Disabled The transmitter and CTS will
operate without regard to the
receiver state
Switch S1-5: RTS
The RTS input can be forced on, ignoring the terminal’s RTS
signal. RTS controls the transmitter by either sending the user’s data
or sending an idle code.
S1-5 RTS Description
Off Forced On An On (high) condition is trans-
mitted regardless of the state of
this unit’s RTS input
On Follows DTE The RTS input controls the
transmitter
Switch S1-6: Character Length
In asynchronous data format, 10 and 11 bit characters are
supported. This setting is ignored in synchronous data format.
Character Character Description
S1-6 Length Start Data bits Parity Stop bits
Off 10-bit 1 8 None 1 or more
1 7 1 1 or more
1 7 None 2
On 11-bit 1 8 1 1 or more
1 9 None 1 or more
Switch S1-7: Data Format
The data format selection controls whether an async-to-sync
conversion is performed.
S1-7 Data Format
On Asynchronous
Off Synchronous
Switch S1-8: DSR System Status
The behavior of the DSR output during performance of a local loop
can be controlled.
DSR
S1-8 Loop Status Description
On DSR On DSR remains high (On) during the
Analog Loop
Off DSR Off DSR goes low (Off) during the
Analog Loop
3.1.2 Switch Set “S2”
The configuration switches on switch S2 control the Rate
Adapter/DTE Rate, Clock Mode, Anti-Stream Timer and RTS/CTS
Delay. The table below shows factory default settings for Switch S2.
Following the table are descriptions of each switch setting.
9 10
SWITCH SET S2 SUMMARY TABLE
Position Function Factory Default Exceptions
S2-1
Rate Adapter
Off
S2-2
Rate Adapter
Off
S2-3 Rate Adapter Off
S2-4 DTE
Loop Control
Off Disabled
S2-5 Clock
Mode
Off Off
S2-6 Clock Mode Off On
S2-7
Anti-Stream Timer
On Disabled
S2-8 RTS/
CTS Delay
Off Normal
Model 2510
Switched 56
}
Network
Clock
}
DTE Rate
}