ADTRAN TSU ACE, Manual

Page: 53 / 88

Chapter 5. Configuration Menu
61200295L1-20 TSU ACE User Manual 5-5
Internal Timing
The TSU ACE is the source of timing. The TSU ACE is config-
ured to use its own internal oscillator as the source of timing.
Applications include private line driver circuits where one
end is set to network and the other to internal. See Figure 5-5
.
Figure 5-5. Internal Clock Source
BIT STUFFING
When enabled, BIT STUFFING causes the TSU ACE to monitor for
ones (1s) density violations and insert a one (1) when needed to main-
tain ones at 12.5 percent. This option should be disabled if B8ZS is en-
abled, if Nx56 is selected, or if alternate channels are being used. All
of these other options already ensure pulse density requirements.
Choices: ENA, DISA
SET LBO
SET LBO
selects the line build-out for the network interface. In
AUTO
mode, the TSU ACE sets the LBO based on the strength of the receive
signal.
Choices: 0dB, AUTO, -22.5dB, -7.5dB, -15dB
RX SENSITIVITY
RX SENSITIVITY
selects the desired receiver sensitivity setting. The
factory default is
NORMAL
which is adequate for most applications.
The extended setting should be used only in applications where the
NORMAL
setting will not suffice.