Specifications

166119 8/31/2006
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Option [3]- EIA-530
Option [4]- HI-Z (Off)
Selecting this last option turns off the Composite port interface drivers.
4.7.2.4 Composite Link Timing Source[4]
This menu allows selection of the source of the timing for the composite link. Clocks for all
channels are derived from this source. When the TxCE driver is enabled, it‟s clock input is
taken from the clock selected in this menu.
Option [1] - Clock from associated RxC signal
Selecting this option causes the system to derive all composite link timing from the composite
interface receive clock (RxC) signal.
Option [2] - Clock from internal oscillator
Selecting this option causes the system to use it‟s internal oscillator to generate a composite
timing signal at a frequency selected in the Composite Link Rate menu.
4.7.2.5 Composite Link TxD Clock Signal [5]
This menu allows selection of the timing signal from which to clock out transmit data.
Option [1] – TxC
This selects the Transmit Clock input (TxC) as the signal for clocking out transmit data.
Option [2] – TxCE
This selects the Transmit Clock output (TxCE or TT) as the signal for clocking out transmit
data.
4.7.2.6 Composite Link ExtClk/TT Clock Driver [6]
This menu allows setting the TxCE/TT clock driver On or Off.
Option [1] - Disable TxCE Driver
Option [2] - Enable TxCE Driver
When the TxCE driver is enabled, the clock source is either RxC or the internal oscillator,
depending on the timing source selected (see subsection 4.7.2.4 above).
4.7.2.7 Composite Link RTS Signal State [7]
This menu allows setting the composite port RTS signal driver On or Off.
Option [1] - RTS Off
Option [2] - RTS On
4.7.2.8 Composite Link Failure Holdoff Timer [8]
This menu allows setting the time period after which a fault alarm will be declared due to a
loss of link synchronization (SYNC).
Option [1] - No Backup
Option [2] – Immediate
Option [3] - 1 second
Option [4] - 5 seconds
Option [5] - 10 seconds
Option [6] - 30 seconds