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2041FT-MC DIP SWITCH SUMMARY TABLE
Position
S1
S2
S3
S4
Switches S1 and S2: Synchronization Method
Set Switches S1 and S2 together to allow the Model 2041FT-MC to
compensate for timing delays when transmitting HSSI data at high
speeds (greater than 2.5 Mbps). At high bit rates, set Switch S1 On
and Switch S2 Off. In this setting, HSSI data will be synchronized to
the Signal Element timing signal from the X.21 side before being
converted to X.21 data. At lower bit rates (less than 2.5 Mbps), set
Switch S1 Off and S2 On. In this setting, the X.21 data bypasses the
synchronization circuit and passes straight through to the HSSI DTE.
S1
S2
Off
Off
Off
On
On
Off
On
On
Switches S3 and S4: Status LED Operation
Set Switches S3 and S4 together to determine the how the Status
LED on he 2041FT-MC triggers.
S3
S4
Off
Off
Off
On
On
Off
On
On
Function
Sync Method
Sync Method
LED Operation
LED Operation
Description
Not a Valid Setting
Data Skips Sync Circuit
Data passes through sync circuit.
Not a Valid Setting
Description
Status LED turned On
Status LED controlled by X.21Indication (I)
signal
Status LED controlled by HSSI Data
Terminal Ready (DTR) signal
Status LED controlled by both "I" and "DTR"
signals
6
Factory Default
Off
}
Bypass
Sync Circuit
On
}
On
LED control
by I and TA
On
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